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ECS umn 20250318 version: The G7v specification is added..

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Reviewed-by: Pristromskaia, Margarita <margarita.pristromskaia@t-systems.com>
Co-authored-by: wanghuijuan738 <wanghuijuan738@huawei.com>
Co-committed-by: wanghuijuan738 <wanghuijuan738@huawei.com>
This commit is contained in:
Huijuan, Wang
2025-04-08 11:42:14 +00:00
committed by zuul
parent 2be04013dc
commit 5440a48253
111 changed files with 1792 additions and 1460 deletions
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<div class="p" id="EN-US_TOPIC_0000001128604648__p1852521716489">You can back up ECS data using Cloud Server Backup or Cloud Disk Backup.<ul id="EN-US_TOPIC_0000001128604648__ul18366112610528"><li id="EN-US_TOPIC_0000001128604648__li16366926185213">Cloud Server Backup (recommended): Use this backup function if you want to back up the data of all EVS disks (system and data disks) on an ECS. This prevents data inconsistency caused by time difference in creating a backup.</li><li id="EN-US_TOPIC_0000001128604648__li6193532193917">Cloud Disk Backup: Use this backup function if you want to back up the data of one or more EVS disks (system or data disk) on an ECS. This minimizes backup costs on the basis of data security.</li></ul>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001128604648__section1685231310443"><h4 class="sectiontitle">ECS Backup Procedure</h4><ol id="EN-US_TOPIC_0000001128604648__ol147701510184519"><li id="EN-US_TOPIC_0000001128604648__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0000001128604648__li464234814566">Click <span><img id="EN-US_TOPIC_0000001128604648__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0000001128604648__li1654693454617">Under <strong id="EN-US_TOPIC_0000001128604648__b13951163522616"><span id="EN-US_TOPIC_0000001128604648__text139519357267">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0000001128604648__b159511135192619">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0000001128604648__li113648682416">In the ECS list, locate the target ECS and choose <strong id="EN-US_TOPIC_0000001128604648__b4117244122312">More</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b29611746132316">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b1818154932315">Create Server Backup</strong>.<ul id="EN-US_TOPIC_0000001128604648__ul4315152019362"><li id="EN-US_TOPIC_0000001128604648__li12315220163611">If the ECS has been associated with a vault, configure the backup information as prompted.<ul id="EN-US_TOPIC_0000001128604648__ul74118744418"><li id="EN-US_TOPIC_0000001128604648__li164287184411"><strong id="EN-US_TOPIC_0000001128604648__b863643112618">Server List</strong>: The ECS to be backed up is selected by default.</li><li id="EN-US_TOPIC_0000001128604648__li104214713447"><strong id="EN-US_TOPIC_0000001128604648__b674664614184">Name</strong>: Customize your backup name.</li><li id="EN-US_TOPIC_0000001128604648__li134214754413"><strong id="EN-US_TOPIC_0000001128604648__b1343010551187">Description</strong>: Supplementary information about the backup.</li><li id="EN-US_TOPIC_0000001128604648__li1421372447"><strong id="EN-US_TOPIC_0000001128604648__b18717114620264">Full Backup</strong>: If this option is selected, the system will perform full backup for the ECS to be associated. The storage capacity used by the backup increases accordingly.</li></ul>
<div class="section" id="EN-US_TOPIC_0000001128604648__section1685231310443"><h4 class="sectiontitle">ECS Backup Procedure</h4><ol id="EN-US_TOPIC_0000001128604648__ol147701510184519"><li id="EN-US_TOPIC_0000001128604648__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0000001128604648__li464234814566">Click <span><img id="EN-US_TOPIC_0000001128604648__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0000001128604648__li1654693454617">Under <strong id="EN-US_TOPIC_0000001128604648__b142711153309"><span id="EN-US_TOPIC_0000001128604648__text1227112158302">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0000001128604648__b11271515183017">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0000001128604648__li113648682416">In the ECS list, locate the target ECS and choose <strong id="EN-US_TOPIC_0000001128604648__b8559132220308">More</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b4559162212309">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b1555913225309">Create Server Backup</strong>.<ul id="EN-US_TOPIC_0000001128604648__ul4315152019362"><li id="EN-US_TOPIC_0000001128604648__li12315220163611">If the ECS has been associated with a vault, configure the backup information as prompted.<ul id="EN-US_TOPIC_0000001128604648__ul74118744418"><li id="EN-US_TOPIC_0000001128604648__li164287184411"><strong id="EN-US_TOPIC_0000001128604648__b202814143119">Server List</strong>: The ECS to be backed up is selected by default.</li><li id="EN-US_TOPIC_0000001128604648__li104214713447"><strong id="EN-US_TOPIC_0000001128604648__b674664614184">Name</strong>: Customize your backup name.</li><li id="EN-US_TOPIC_0000001128604648__li134214754413"><strong id="EN-US_TOPIC_0000001128604648__b1343010551187">Description</strong>: Supplementary information about the backup.</li><li id="EN-US_TOPIC_0000001128604648__li1421372447"><strong id="EN-US_TOPIC_0000001128604648__b312417793113">Full Backup</strong>: If this option is selected, the system will perform full backup for the ECS to be associated. The storage capacity used by the backup increases accordingly.</li></ul>
</li><li id="EN-US_TOPIC_0000001128604648__li1523293617363">If the ECS is not associated with a vault, buy a vault first and then configure the backup information as prompted.<p id="EN-US_TOPIC_0000001128604648__p1329123410377"><a name="EN-US_TOPIC_0000001128604648__li1523293617363"></a><a name="li1523293617363"></a>For details, see <a href="https://docs.otc.t-systems.com/cloud-backup-recovery/umn/getting_started/step_1_create_a_vault/creating_a_server_backup_vault.html" target="_blank" rel="noopener noreferrer">Creating a Server Backup Vault</a>.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0000001128604648__li175591309446">Click <strong id="EN-US_TOPIC_0000001128604648__b354222122517">OK</strong>. The system automatically creates a backup for the ECS.<p id="EN-US_TOPIC_0000001128604648__p1805632194414">On the <strong id="EN-US_TOPIC_0000001128604648__b873775316237">Backups</strong> tab page, if the status of the backup is <strong id="EN-US_TOPIC_0000001128604648__b7936121217409">Available</strong>, the backup task is successful.</p>
@ -14,7 +14,7 @@
<p id="EN-US_TOPIC_0000001128604648__p16816105810355">After the backup is complete, you can restore server data or create images on the <strong id="EN-US_TOPIC_0000001128604648__b444819821412">Backups</strong> tab page. For details, see <a href="https://docs.otc.t-systems.com/cloud-backup-recovery/umn/restoring_data/restoring_from_a_cloud_server_backup.html" target="_blank" rel="noopener noreferrer">Restoring from a Cloud Server Backup</a> and <a href="https://docs.otc.t-systems.com/cloud-backup-recovery/umn/backup_management/using_a_backup_to_create_an_image.html" target="_blank" rel="noopener noreferrer">Using a Backup to Create an Image</a>.</p>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001128604648__section7890518132019"><h4 class="sectiontitle">EVS Disk Backup Procedure</h4><ol id="EN-US_TOPIC_0000001128604648__ol17890418192017"><li id="EN-US_TOPIC_0000001128604648__li1789091817209">Log in to the management console.</li><li id="EN-US_TOPIC_0000001128604648__li7890171852016">Click <span><img id="EN-US_TOPIC_0000001128604648__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0000001128604648__li68901818132010">Under <strong id="EN-US_TOPIC_0000001128604648__b105566140274"><span id="EN-US_TOPIC_0000001128604648__text7556111422719">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0000001128604648__b6556171415272">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0000001128604648__li138904183204">In the ECS list, locate the target ECS and choose <strong id="EN-US_TOPIC_0000001128604648__b117411738172618">More</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b974111388266">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b12741153818267">Create Disk Backup</strong>.<ul id="EN-US_TOPIC_0000001128604648__ul10890418122011"><li id="EN-US_TOPIC_0000001128604648__li28901318112015">If the ECS has been associated with a vault, configure the backup information as prompted.<ul id="EN-US_TOPIC_0000001128604648__ul12890418122010"><li id="EN-US_TOPIC_0000001128604648__li128901518102012"><strong id="EN-US_TOPIC_0000001128604648__b1645202062716">Server List</strong>: The ECS to be backed up is selected by default. Click <span><img id="EN-US_TOPIC_0000001128604648__image2452172092718" src="en-us_image_0000001128656892.png" title="Click to enlarge" class="imgResize"></span> to view the disks attached to the ECSs. Select the disks to be backed up.</li><li id="EN-US_TOPIC_0000001128604648__li1789016180208"><strong id="EN-US_TOPIC_0000001128604648__b51371052134118">Name</strong>: Customize your backup name.</li><li id="EN-US_TOPIC_0000001128604648__li168901718172014"><strong id="EN-US_TOPIC_0000001128604648__b106911853174116">Description</strong>: Supplementary information about the backup.</li><li id="EN-US_TOPIC_0000001128604648__li1489017189204"><strong id="EN-US_TOPIC_0000001128604648__b18291318162117">Full Backup</strong>: If this option is selected, the system will perform full backup for the disks to be associated. The storage capacity used by the backup increases accordingly.</li></ul>
<div class="section" id="EN-US_TOPIC_0000001128604648__section7890518132019"><h4 class="sectiontitle">EVS Disk Backup Procedure</h4><ol id="EN-US_TOPIC_0000001128604648__ol17890418192017"><li id="EN-US_TOPIC_0000001128604648__li1789091817209">Log in to the management console.</li><li id="EN-US_TOPIC_0000001128604648__li7890171852016">Click <span><img id="EN-US_TOPIC_0000001128604648__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0000001128604648__li68901818132010">Under <strong id="EN-US_TOPIC_0000001128604648__b191771333113113"><span id="EN-US_TOPIC_0000001128604648__text217712335314">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0000001128604648__b91782033193119">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0000001128604648__li138904183204">In the ECS list, locate the target ECS and choose <strong id="EN-US_TOPIC_0000001128604648__b152496393318">More</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b11249103911317">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0000001128604648__b1025011390313">Create Disk Backup</strong>.<ul id="EN-US_TOPIC_0000001128604648__ul10890418122011"><li id="EN-US_TOPIC_0000001128604648__li28901318112015">If the ECS has been associated with a vault, configure the backup information as prompted.<ul id="EN-US_TOPIC_0000001128604648__ul12890418122010"><li id="EN-US_TOPIC_0000001128604648__li128901518102012"><strong id="EN-US_TOPIC_0000001128604648__b746858203120">Server List</strong>: The ECS to be backed up is selected by default. Click <span><img id="EN-US_TOPIC_0000001128604648__image53598395422" src="en-us_image_0000001128656892.png" title="Click to enlarge" class="imgResize"></span> to view the disks attached to the ECSs. Select the disks to be backed up.</li><li id="EN-US_TOPIC_0000001128604648__li1789016180208"><strong id="EN-US_TOPIC_0000001128604648__b51371052134118">Name</strong>: Customize your backup name.</li><li id="EN-US_TOPIC_0000001128604648__li168901718172014"><strong id="EN-US_TOPIC_0000001128604648__b106911853174116">Description</strong>: Supplementary information about the backup.</li><li id="EN-US_TOPIC_0000001128604648__li1489017189204"><strong id="EN-US_TOPIC_0000001128604648__b18291318162117">Full Backup</strong>: If this option is selected, the system will perform full backup for the disks to be associated. The storage capacity used by the backup increases accordingly.</li></ul>
</li><li id="EN-US_TOPIC_0000001128604648__li6890201892017">If the ECS is not associated with a vault, buy a vault first and then configure the backup information as prompted.<p id="EN-US_TOPIC_0000001128604648__p1513210104020"><a name="EN-US_TOPIC_0000001128604648__li6890201892017"></a><a name="li6890201892017"></a>For details, see <a href="https://docs.otc.t-systems.com/cloud-backup-recovery/umn/getting_started/step_1_create_a_vault/creating_a_disk_backup_vault.html" target="_blank" rel="noopener noreferrer">Creating a Disk Backup Vault</a>.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0000001128604648__li8890131812012">Click <strong id="EN-US_TOPIC_0000001128604648__b538510218222">OK</strong>. The system automatically creates a backup for the disk.<p id="EN-US_TOPIC_0000001128604648__p2890171817207">On the <strong id="EN-US_TOPIC_0000001128604648__b4491143114115">Backups</strong> tab of the <span id="EN-US_TOPIC_0000001128604648__text128969391438">CBR</span> console, if the status of the backup is <strong id="EN-US_TOPIC_0000001128604648__b587482084312">Available</strong>, the backup task is successful.</p>

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@ -44,7 +44,7 @@ LOGGENERATIONS=3 </pre>
<div class="section" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_section773995710317"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_section773995710317"></a><a name="en-us_topic_0178319250_section773995710317"></a><h4 class="sectiontitle">Configuring atop for Ubuntu 20/22 and Debian 10/11</h4><ol id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ol117391857933"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li9739165720310">Run the following command to install atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p574010571236"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li9739165720310"></a><a name="en-us_topic_0178319250_li9739165720310"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b17740155712320">apt-get install -y atop</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li20740185712319">Run the following command to modify the configuration file of atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p77404573318"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li20740185712319"></a><a name="en-us_topic_0178319250_li20740185712319"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b974019572312">vi /etc/default/atop</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p19740205715312">Modify the following parameters, save the modification, and exit:</p>
<ul id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ul17740557534"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li074013576314">Change the value of <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1771376104">LOGINTERVAL</strong> to, for example, <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1195119382">15</strong>. The default value of <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1165373829">LOGINTERVAL</strong> is <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b499870197">600</strong>, in seconds.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1974017571312">Change the value of <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b586640479">LOGGENERATIONS</strong> to, for example, <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b786660787">3</strong>. The default retention period of atop logs is <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b722058674">28</strong> days.<pre class="screen" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_screen12740557137">LOGINTERVAL=15
<ul id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ul17740557534"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li074013576314">Change the value of <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b340298233">LOGINTERVAL</strong> to, for example, <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1347159787">15</strong>. The default value of <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1104778191">LOGINTERVAL</strong> is <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b502965116">600</strong>, in seconds.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1974017571312">Change the value of <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b216426801">LOGGENERATIONS</strong> to, for example, <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1605223063">3</strong>. The default retention period of atop logs is <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1323539604">28</strong> days.<pre class="screen" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_screen12740557137">LOGINTERVAL=15
LOGGENERATIONS=3 </pre>
</li></ul>
</li></ol><ol start="3" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ol67406571734"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li074011571334">Run the following command to start atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p117401457438"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li074011571334"></a><a name="en-us_topic_0178319250_li074011571334"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1474011571536">systemctl start atop</strong></p>
@ -83,9 +83,9 @@ LOGGENERATIONS=3 </pre>
<div class="section" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_section3205824181917"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_section3205824181917"></a><a name="en-us_topic_0178319250_section3205824181917"></a><h4 class="sectiontitle">Configuring atop for SUSE 12 or SUSE 15</h4><ol id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ol855994441912"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li8559844111911">Run the following command to download the atop source package:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p14559134461910"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li8559844111911"></a><a name="en-us_topic_0178319250_li8559844111911"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b10559944151915">wget https://www.atoptool.nl/download/atop-2.6.0-1.src.rpm</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li65591644181915">Run the following command to install the package:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p14559144481916"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li65591644181915"></a><a name="en-us_topic_0178319250_li65591644181915"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b145591344181914">rpm -ivh atop-2.6.0-1.src.rpm</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li2559104471918">Run the following command to install atop dependencies.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p65595443198"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li2559104471918"></a><a name="en-us_topic_0178319250_li2559104471918"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b65601044141911">zypper -n install rpm-build ncurses-devel zlib-devel</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li7560154461914">Run the following command to compile atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p2560154411197"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li7560154461914"></a><a name="en-us_topic_0178319250_li7560154461914"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1256034415196">cd /usr/src/packages/SPECS</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li7560154461914">Run the following commands to compile atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p2560154411197"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li7560154461914"></a><a name="en-us_topic_0178319250_li7560154461914"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1256034415196">cd /usr/src/packages/SPECS</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p105603449196"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b18560134441920">rpmbuild -bb atop-2.6.0.spec</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li656094451911">Run the following command to install atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p11560124412194"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li656094451911"></a><a name="en-us_topic_0178319250_li656094451911"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1556014419193">cd /usr/src/packages/RPMS/x86_64</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li656094451911">Run the following commands to install atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p11560124412194"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li656094451911"></a><a name="en-us_topic_0178319250_li656094451911"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1556014419193">cd /usr/src/packages/RPMS/x86_64</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1656015449193"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b656016440197">rpm -ivh atop-2.6.0-1.x86_64.rpm</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1256011446192">Run the following command to modify the configuration file of atop:<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p65601441192"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1256011446192"></a><a name="en-us_topic_0178319250_li1256011446192"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b7560154416192">vi /etc/default/atop</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1560174415192">Modify the following parameters, save the modification, and exit:</p>
@ -105,7 +105,7 @@ LOGGENERATIONS=3 </pre>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p5984112216919">If the version is 220 or later, go to the next step.</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p171029352910">Otherwise, delete parameter <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1345210012717">--now</strong> from the Makefile of atop.</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1194310424914"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b7870193013815">vi atop-2.6.0/Makefile</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p53732451396">Delete parameter <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1408144182912">--now</strong> following the systemctl command.</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p53732451396">Delete parameter <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1408144182912">--now</strong> following the <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b128731755174115">systemctl</strong> command.</p>
<pre class="screen" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_screen158648518106"> then /bin/systemctl disable atop 2&gt; /dev/null; \
/bin/systemctl disable atopacct 2&gt; /dev/null; \
/bin/systemctl daemon-reload; \
@ -116,7 +116,7 @@ LOGGENERATIONS=3 </pre>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li48321633151013">Installing command for EulerOS or Fedora<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p184502531116"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li48321633151013"></a><a name="en-us_topic_0178319250_li48321633151013"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b38703301885">yum install make gcc zlib-devel ncurses-devel -y</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li118321633201020">Installing command for Debian 9, Debian 10, or Ubuntu<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1187015305812"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li118321633201020"></a><a name="en-us_topic_0178319250_li118321633201020"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b48705301684">apt install make gcc zlib1g-dev libncurses5-dev libncursesw5-dev -y</strong></p>
</li></ul>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li687020308816">Run the following commands to compile and install atop.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p5870430884"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li687020308816"></a><a name="en-us_topic_0178319250_li687020308816"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1687043015818">cd atop-2.6.0</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li687020308816">Compile and install atop.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p5870430884"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li687020308816"></a><a name="en-us_topic_0178319250_li687020308816"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1687043015818">cd atop-2.6.0</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p987063016819"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b198708308819">make systemdinstall</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1487093010819">Modify the configuration file of atop.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p2087073020818"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1487093010819"></a><a name="en-us_topic_0178319250_li1487093010819"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b58702307818">vi /etc/default/atop</strong></p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p6870163013810">Modify the following parameters, save the modification, and exit:</p>
@ -126,14 +126,14 @@ LOGGENERATIONS=3
LOGPATH=/var/log/atop </pre>
</li></ul>
</li></ol><ol start="7" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ol208703301083"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1687015301810">Restart atop.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1187183017817"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1687015301810"></a><a name="en-us_topic_0178319250_li1687015301810"></a><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1587114304813">systemctl restart atop</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li8871143014810">Run the following command to check the status of atop. <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b02762118278">active (running)</strong> indicates that atop is running properly.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p178711230289"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1787113301183">systemctl status atop</strong></p>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li8871143014810">Check the status of atop. <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b02762118278">active (running)</strong> indicates that atop is running properly.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p178711230289"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1787113301183">systemctl status atop</strong></p>
<pre class="screen" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_screen1170333141215">atop.service - Atop advanced performance monitor Loaded: loaded(/lib/systemd/system/atop.service; enabled) Active: active (running) since Sun2021-07-25 19:29:40 CST; 4s ago .</pre>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_section478115314146"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_section478115314146"></a><a name="en-us_topic_0178319250_section478115314146"></a><h4 class="sectiontitle">Analyzing atop Logs</h4><p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1754916522114">After startup, atop stores collection records in <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b13281344115617">/var/log/atop</strong>.</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p139817081612">Run the following command to check the log file:</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p169851051510"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b196981810161511">atop -r /var/log/atop/atop_2024XXXX</strong></p>
<ul id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ul8336644191711"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li15337114411171"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1754514332278">Common atop commands</strong><div class="p" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p72693231716">After opening the log file, you can use the following commands to sort data.<ul id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ul191701134101519"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li18170173411151"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b16281155415215">c</strong>: used to sort processes by CPU usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1417073461510"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b154184206316">m</strong>: used to sort processes by memory usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li31702340154"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b739782715314">d</strong>: used to sort processes by disk usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li0170434131512"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b741964419317">a</strong>: used to sort processes by the overall resource usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li317020345157"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b7891185515514">n</strong>: used to sort processes by network usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li817063431510"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b165711121668">t</strong>: used to go to the next monitoring collection point.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li11170143411515"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b16953591075">T</strong>: used to go to the previous monitoring collection point.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li12171034171517"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b17915141420813">b</strong>: used to specify a time point in the format of YYYYMMDDhhmm.</li></ul>
<ul id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ul8336644191711"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li15337114411171"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1754514332278">Common atop commands</strong><div class="p" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p72693231716">After opening the log file, you can use the following commands to sort data:<ul id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_ul191701134101519"><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li18170173411151"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b16281155415215">c</strong>: used to sort processes by CPU usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1417073461510"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b154184206316">m</strong>: used to sort processes by memory usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li31702340154"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b739782715314">d</strong>: used to sort processes by disk usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li0170434131512"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b741964419317">a</strong>: used to sort processes by the overall resource usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li317020345157"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b7891185515514">n</strong>: used to sort processes by network usage in descending order.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li817063431510"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b165711121668">t</strong>: used to go to the next monitoring collection point.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li11170143411515"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b16953591075">T</strong>: used to go to the previous monitoring collection point.</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li12171034171517"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b17915141420813">b</strong>: used to specify a time point in the format of YYYYMMDDhhmm.</li></ul>
</div>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li1765341817"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1473319111013">System resource monitoring fields</strong><p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1484111325178">The following figure shows some monitoring fields and values. The values vary according to the sampling period and atop version. The figure is for reference only.</p>
<div class="fignone" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_fig961031132116"><span class="figcap"><b>Figure 1 </b>System resource monitoring fields</span><br><span><img id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_image1661119118215" src="en-us_image_0000001914323145.png" title="Click to enlarge" class="imgResize"></span></div>
@ -174,7 +174,7 @@ GRUB_DISABLE_RECOVERY="true"</pre>
</div></div>
</li><li id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li71761910442">Set the vmcore dump level.<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p1440772742515"><a name="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_li71761910442"></a><a name="en-us_topic_0178319250_li71761910442"></a>Add the following content to file <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b101214408189">/etc/kdump.conf</strong>. If the content already exists, skip this step.</p>
<pre class="screen" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_screen1293264111316">core_collector makedumpfile -d 31 -c</pre>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p16451909446">where</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p16451909446">In the preceding command:</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p19921259194218"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b13909155815185">-c</strong> indicates compressing the vmcore file.</p>
<p id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_p9407172712520"><strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b1830142162018">-d</strong> indicates leaving out irrelevant data. Generally, the value following <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b156446563105">-d</strong> is <strong id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_b63181162111">31</strong>, which is calculated based on the following values. You can adjust the value if needed.</p>
<pre class="screen" id="EN-US_TOPIC_0000001143214829__en-us_topic_0178319250_screen1546919318512">zero pages = 1

6
docs/ecs/umn/en-us_topic_0000001194242043.html
View File

@ -33,7 +33,7 @@
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001194242043__section47861136153218"><a name="EN-US_TOPIC_0000001194242043__section47861136153218"></a><a name="section47861136153218"></a><h4 class="sectiontitle">Enabling HSS</h4><p id="EN-US_TOPIC_0000001194242043__p45070267454">Host Security Service (HSS) is designed to improve the overall security for ECSs. It helps you identify and manage the assets on your servers, eliminate risks, and defend against intrusions and web page tampering. There are also advanced protection and security operations functions available to help you easily detect and handle threats.</p>
<p id="EN-US_TOPIC_0000001194242043__p17507926134512">Before using the HSS service, install the HSS agent on your ECSs first so that your ECSs are protected by the HSS cloud protection center. You will be able to check the security statuses and risks (if any) of all ECSs in a region on the HSS console.</p>
<p id="EN-US_TOPIC_0000001194242043__p17507926134512">Before using the HSS service, install the HSS agent on your ECSs first and you will be able to check the ECS security status and risks in a region on the HSS console.</p>
<p id="EN-US_TOPIC_0000001194242043__p195099564428">We provide different methods for you to install the HSS agent depending on whether your ECSs are to be created or already exist.</p>
<ul id="EN-US_TOPIC_0000001194242043__ul1094324144611"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_li1628764893815"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_b148791426115019">Scenario 1: An ECS is to be created.</strong><p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p10374318115215">When you use certain public images to create ECSs, you are advised to use HSS to protect your ECSs.</p>
<div class="p" id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p16778114632017">Select one of the following options:<ul id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_ul338831015558"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_li1388171014558"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_b5969102415191">Advanced HSS edition (paid)</strong>: You can choose the enterprise edition and you need to pay for it.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_li32065291944"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_b7177141812260">None</strong>: HSS is disabled and servers are not protected.</li></ul>
@ -59,9 +59,9 @@
<p id="EN-US_TOPIC_0000001194242043__p775619355292"><span id="EN-US_TOPIC_0000001194242043__text11124160171017">CBR</span> enables you to back up ECSs and disks with ease. In case of a virus attack, accidental deletion, or software or hardware fault, you can restore data to any point in the past when the data was backed up. CBR protects your services by ensuring the security and consistency of your data.</p>
<p id="EN-US_TOPIC_0000001194242043__p134684215332"><strong id="EN-US_TOPIC_0000001194242043__b14297251593">To enable CBR when purchasing an ECS</strong>:</p>
<p id="EN-US_TOPIC_0000001194242043__p16207239103116">Set CBR when purchasing an ECS. The system will associate the ECS with a cloud backup vault and the selected backup policy to periodically back up the ECS.</p>
<ul id="EN-US_TOPIC_0000001194242043__ul13673155323511"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li165291557134413">Create new<ol id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_ol20529357184412"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li12529155717445">Set the name of the cloud backup vault, which consists of 1 to 64 characters, containing only letters, digits, underscores (_), and hyphens (-). For example, <strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_b84235270616218">vault-f61e</strong>. The default naming rule is <strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_b204370138187">vault_</strong><em id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_i443871351814">xxxx</em>.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li1052914573443">Enter the vault capacity, which is required for backing up the ECS. The vault capacity cannot be smaller than that of the ECS to be backed up. Its value ranges from the total capacity of the ECS to 10,485,760 in the unit of GB.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li4529165718442">Select a backup policy from the drop-down list, or log in to the CBR console and configure a desired one.</li></ol>
<ul id="EN-US_TOPIC_0000001194242043__ul13673155323511"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li165291557134413">Create new<ol id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_ol20529357184412"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li12529155717445">Enter the name of the cloud backup vault. The name consists of 1 to 64 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed. For example, <strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_b84235270616218">vault-f61e</strong>. The default naming rule is <strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_b204370138187">vault_</strong><em id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_i443871351814">xxxx</em>.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li1052914573443">Enter the vault capacity, which is required for backing up the ECS. The vault capacity cannot be smaller than that of the ECS to be backed up. Its value ranges from the total capacity of the ECS to 10,485,760 in the unit of GB.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li4529165718442">Select a backup policy from the drop-down list, or log in to the CBR console and configure a desired one.</li></ol>
</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li8530125764419">Use existing<ol id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_ol45303574446"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li752915717444">Select an existing cloud backup vault from the drop-down list.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li85291257184413">Select a backup policy from the drop-down list, or log in to the CBR console and configure a desired one.</li></ol>
</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li16758640229">Do not use<p id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_p93091897229"><a name="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li16758640229"></a><a name="en-us_topic_0163572591_li16758640229"></a>Skip this configuration if CBR is not required. If you need to enable CBR after creating an ECS, log in to the CBR console, locate the target vault, and bind the ECS to the vault.</p>
</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li16758640229">Do not use<p id="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_p93091897229"><a name="EN-US_TOPIC_0000001194242043__en-us_topic_0163572591_li16758640229"></a><a name="en-us_topic_0163572591_li16758640229"></a>Skip this configuration if CBR is not required. If you need to enable CBR after creating an ECS, log in to the CBR console, locate the target vault, and associate it with the ECS.</p>
</li></ul>
<p id="EN-US_TOPIC_0000001194242043__p19840193011333"><strong id="EN-US_TOPIC_0000001194242043__b171111312144218">To back up data for a created ECS</strong>:</p>
<p id="EN-US_TOPIC_0000001194242043__p17470225376">You can use the cloud server backup and cloud disk backup to <a href="en-us_topic_0000001128445638.html">back up your ECS data</a>.</p>

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<h1 class="topictitle1">How Can I Install a GUI on an ECS Running Debian?</h1>
<div id="body0000001210472883"><div class="section" id="EN-US_TOPIC_0000001210472883__en-us_topic_0040724536_section35498796104411"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0000001210472883__en-us_topic_0040724536_p21904510104350">To provide a pure system, the ECSs running Debian do not have a GUI installed by default. You can install a GUI on such ECSs as needed.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001210472883__section18421165385010"><h4 class="sectiontitle">Constraints</h4><ul id="EN-US_TOPIC_0000001210472883__ul99951651115513"><li id="EN-US_TOPIC_0000001210472883__li692024112367">The operations described in this section apply to ECSs running Debian 8, Debian 9, or Debian 10 only.</li><li id="EN-US_TOPIC_0000001210472883__li199565105513">Before installing a GUI on an ECS, ensure that the memory is no less than 2 GB to prevent GUI installation or ECS startup failures.</li></ul>
<div class="section" id="EN-US_TOPIC_0000001210472883__section18421165385010"><h4 class="sectiontitle">Constraints</h4><ul id="EN-US_TOPIC_0000001210472883__ul99951651115513"><li id="EN-US_TOPIC_0000001210472883__li692024112367">The operations described in this section apply to ECSs running Debian 8, Debian 9, or Debian 10 only.</li><li id="EN-US_TOPIC_0000001210472883__li199565105513">Before installing a GUI on an ECS, ensure that the idle memory is greater than or equal to 2 GB. Otherwise, the GUI installation may fail or the ECS cannot be started after the installation.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0000001210472883__section13834633193916"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001210472883__ol19856204563916"><li id="EN-US_TOPIC_0000001210472883__li562212292578">Log in to the ECS and run the following command to update the software library:<p id="EN-US_TOPIC_0000001210472883__p1624174555716"><a name="EN-US_TOPIC_0000001210472883__li562212292578"></a><a name="li562212292578"></a><strong id="EN-US_TOPIC_0000001210472883__b824184518574">apt update</strong></p>
</li><li id="EN-US_TOPIC_0000001210472883__li1571194613570">Run the following command to upgrade the software library:<p id="EN-US_TOPIC_0000001210472883__p314114421571"><a name="EN-US_TOPIC_0000001210472883__li1571194613570"></a><a name="li1571194613570"></a><strong id="EN-US_TOPIC_0000001210472883__b714111428575">apt upgrade</strong></p>

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</div>
<div class="section" id="EN-US_TOPIC_0000001278335673__section72625177171"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0000001278335673__p64851122187">When purchasing an ECS, you are advised to select the key pair login mode. For Windows ECSs, key pairs are required to decrypt the passwords so that you can use the decrypted password to log in.</p>
<ul id="EN-US_TOPIC_0000001278335673__ul114361152198"><li id="EN-US_TOPIC_0000001278335673__li14436191511190">Logging in to a Linux ECS<p id="EN-US_TOPIC_0000001278335673__p18838194782716"><a name="EN-US_TOPIC_0000001278335673__li14436191511190"></a><a name="li14436191511190"></a>You can directly use a key pair to log in a Linux ECS.</p>
<div class="p" id="EN-US_TOPIC_0000001278335673__p039916594416"><ul id="EN-US_TOPIC_0000001278335673__ul181461546172719"><li id="EN-US_TOPIC_0000001278335673__li71454469278">During the ECS creation, select the key pair login mode. For details, see "Set Login Mode" in <a href="en-us_topic_0163572591.html">Step 3: Configure Advanced Settings</a>.</li><li id="EN-US_TOPIC_0000001278335673__li1114624612274">After the ECS is created, bind a key pair to the ECS by referring to "Binding a Key Pair" in the <em id="EN-US_TOPIC_0000001278335673__i2105132216190">Data Encryption Workshop User Guide</em>.</li></ul>
<div class="p" id="EN-US_TOPIC_0000001278335673__p039916594416"><ul id="EN-US_TOPIC_0000001278335673__ul181461546172719"><li id="EN-US_TOPIC_0000001278335673__li71454469278">During the ECS creation, select the key pair login mode. For details, see "Set <strong id="EN-US_TOPIC_0000001278335673__b14681388132">Login Mode</strong>" in <a href="en-us_topic_0163572591.html">Step 3: Configure Advanced Settings</a>.</li><li id="EN-US_TOPIC_0000001278335673__li1114624612274">After the ECS is created, bind a key pair to the ECS by referring to "Binding a Key Pair" in the <em id="EN-US_TOPIC_0000001278335673__i2105132216190">Data Encryption Workshop User Guide</em>.</li></ul>
</div>
</li></ul>
<ul id="EN-US_TOPIC_0000001278335673__ul6174151881910"><li id="EN-US_TOPIC_0000001278335673__li417414186193">Logging in to a Windows ECS<p id="EN-US_TOPIC_0000001278335673__p8107142963217"><a name="EN-US_TOPIC_0000001278335673__li417414186193"></a><a name="li417414186193"></a>You can use the key pair to obtain a password for login. The password is randomly generated and is more secure.</p>

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<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p563944619132"><span><img id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_image17171161261212" src="en-us_image_0191603936.png" title="Click to enlarge" class="imgResize"></span></p>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_section1051610871416"><h4 class="sectiontitle">inotify Watch Limit Reached</h4><p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p836198163512">If inotify watches are used up, "No space left on device" will be displayed.</p>
<div class="section" id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_section1051610871416"><h4 class="sectiontitle">Value of <strong id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_b1915073685011">fs.inotify.max_user_watches</strong> Reached</h4><p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p836198163512">If inotify watches are used up, "No space left on device" will be displayed.</p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p1857712134357"><span><img id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_image972641783516" src="en-us_image_0191603937.png" title="Click to enlarge" class="imgResize"></span></p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p6106173173518">Solution</p>
<ol id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_ol133881360161"><li id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_li1238883616165">Run the following command to edit the <strong id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_b319617281218">/etc/sysctl.conf</strong> file:<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p1249063781618"><strong id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_b670015761511">vi /etc/sysctl.conf</strong></p>
</li><li id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_li12388123691619">Add the following content to the file:<pre class="screen" id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_screen2019120287156">fs.inotify.max_user_watches = 524288</pre>
</li><li id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_li338893615162">Run the following command for the modification to take effect:<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p51062031153512"><a name="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_li338893615162"></a><a name="en-us_topic_0191603904_en-us_topic_0190687743_li338893615162"></a><strong id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_b191734420152">sysctl -p</strong></p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p3164323124810">inotify is used to monitor file system events. By default, a maximum of 8192 files can be watched for each real user ID. You can run the following command to obtain the current limit:</p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p3164323124810">inotify is used to monitor file system events. By default, a maximum of 8,192 files can be watched for each real user ID. You can run the following command to obtain the current limit:</p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p710612313359"><strong id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_b735788101720">cat /proc/sys/fs/inotify/max_user_watches</strong></p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p468123783511"><span><img id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_image244387358" src="en-us_image_0191603938.png" title="Click to enlarge" class="imgResize"></span></p>
<p id="EN-US_TOPIC_0000001547370984__en-us_topic_0191603904_en-us_topic_0190687743_p141781629171419">If the limit is too low to watch all files, increase the limit.</p>

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<h1 class="topictitle1">How Do I Fix File Creation Failures Due to Inode Exhaustion?</h1>
<div id="body32001227"><div class="section" id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_section838705415374"><h4 class="sectiontitle">Symptom</h4><p id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_p56151259113710">When you create a file or directory, you get the error message "No space left on device", "Cannot create directory", or "Couldn't create temporary archive name."</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_section9571438103818"><h4 class="sectiontitle">Possible Cause</h4><p id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_p10146152621516">In Linux, both of the following use the disk space:</p>
<div class="section" id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_section9571438103818"><h4 class="sectiontitle">Possible Causes</h4><p id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_p10146152621516">In Linux, both of the following use the disk space:</p>
<ul id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_ul39571329121511"><li id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_li12451203817152">Data</li><li id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_li695732971517">Inode</li></ul>
<div class="note" id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_note0257130151015"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001597810477__en-us_topic_0176850943_p425853081018">An inode (index node) stores metadata of a file system object, such as a file, directory, device file, socket, and pipe in the file system, but does not contain the object's data and filename.</p>
</div></div>

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</table>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001630328828__section16095210249"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001630328828__ol12609425242"><li id="EN-US_TOPIC_0000001630328828__li952211714179">Log in to the management console.</li><li id="EN-US_TOPIC_0000001630328828__li1859019014179">Under <strong id="EN-US_TOPIC_0000001630328828__b12181645171318"><span id="EN-US_TOPIC_0000001630328828__text2218154510139">Computing</span></strong>, click <strong id="EN-US_TOPIC_0000001630328828__b182192456131">Elastic Cloud Server</strong>.<p id="EN-US_TOPIC_0000001630328828__p28383428216">The ECS console is displayed.</p>
<div class="section" id="EN-US_TOPIC_0000001630328828__section16095210249"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001630328828__ol12609425242"><li id="EN-US_TOPIC_0000001630328828__li952211714179">Log in to the management console.</li><li id="EN-US_TOPIC_0000001630328828__li1859019014179">Under <strong id="EN-US_TOPIC_0000001630328828__b1805621184"><span id="EN-US_TOPIC_0000001630328828__text108051720180">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0000001630328828__b1080515212187">Elastic Cloud Server</strong>.<p id="EN-US_TOPIC_0000001630328828__p28383428216">The ECS console is displayed.</p>
</li><li id="EN-US_TOPIC_0000001630328828__li5741957114179">In the search box, specify search criteria.<p id="EN-US_TOPIC_0000001630328828__p565319017372"><a name="EN-US_TOPIC_0000001630328828__li5741957114179"></a><a name="li5741957114179"></a>You can use either of the following methods:</p>
<ul id="EN-US_TOPIC_0000001630328828__ul13187161122215"><li id="EN-US_TOPIC_0000001630328828__li6711724163618">Directly enter a property value for search.</li><li id="EN-US_TOPIC_0000001630328828__li491671419227">Select a property first and specify the property value for search.<ol type="a" id="EN-US_TOPIC_0000001630328828__ol1835010141318"><li id="EN-US_TOPIC_0000001630328828__li191652820348">Click the search box and select a property.<div class="fignone" id="EN-US_TOPIC_0000001630328828__fig36751424101219"><span class="figcap"><b>Figure 1 </b>Selecting a property</span><br><span><img id="EN-US_TOPIC_0000001630328828__image14454151715122" src="en-us_image_0000001787680536.png"></span></div>
</li><li id="EN-US_TOPIC_0000001630328828__li9350171443112">Specify a property value and press <strong id="EN-US_TOPIC_0000001630328828__b20960191155112">Enter</strong> to search.</li></ol>

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<a name="EN-US_TOPIC_0013771092"></a><a name="EN-US_TOPIC_0013771092"></a>
<h1 class="topictitle1">Modifying Specifications of Individual ECSs</h1>
<div id="body48598242"><div class="section" id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_section14602858172718"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_a2c9a6797f65d44aba4ec9d2961d46223">If the <span id="EN-US_TOPIC_0013771092__text169031439182212">ECS</span> specifications do not meet service requirements, you can modify the <span id="EN-US_TOPIC_0013771092__text1690413914228">ECS</span> specifications, including vCPUs and memory. Certain <span id="EN-US_TOPIC_0013771092__text13759153719401">ECS</span>s allow you to change their types when you modify their specifications.</p>
<div id="body48598242"><div class="section" id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_section14602858172718"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_a2c9a6797f65d44aba4ec9d2961d46223">If the <span id="EN-US_TOPIC_0013771092__text1585123774017">ECS</span> specifications do not meet service requirements, you can modify the specifications, including vCPUs and memory. Certain <span id="EN-US_TOPIC_0013771092__text13759153719401">ECS</span>s allow you to change their types when you modify their specifications.</p>
</div>
<div class="section" id="EN-US_TOPIC_0013771092__section15710213610"><h4 class="sectiontitle">Background</h4><p id="EN-US_TOPIC_0013771092__p19991172319612">To obtain the virtualization type of an ECS, perform the following operations:</p>
<ol id="EN-US_TOPIC_0013771092__ol1580125031315"><li id="EN-US_TOPIC_0013771092__li158065010135">On the page providing details about the ECS, view the ECS specifications.<div class="fignone" id="EN-US_TOPIC_0013771092__fig14561414141716"><span class="figcap"><b>Figure 1 </b>Viewing ECS specifications</span><br><span><img id="EN-US_TOPIC_0013771092__image199481252184017" src="en-us_image_0121090576.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0013771092__li530413618147">Check the specifications tables in <a href="en-us_topic_0035470096.html">ECS Types</a> for the virtualization type.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_section57753505172833"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_ul35475327193536"><li id="EN-US_TOPIC_0013771092__li059731619453">The ECS needs to be stopped during the specification modification, so you are advised to perform this operation during off-peak hours.</li><li id="EN-US_TOPIC_0013771092__li168827587416">During the specification modification, do not perform any operation on the <span id="EN-US_TOPIC_0013771092__text624921414422">ECS</span>, such as stopping or restarting the ECS. Otherwise, the modification will fail.</li><li id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_li63799810105126">Downgrading ECS specifications (vCPUs or memory) will reduce performance.</li><li id="EN-US_TOPIC_0013771092__li344174672418">Certain ECS types do not support specifications modification. For details about available ECS types and functions, see <a href="en-us_topic_0035470096.html">ECS Types</a>. For details about constraints on using different types of ECSs, see their notes.</li><li id="EN-US_TOPIC_0013771092__li143963249488">When the disk status is <strong id="EN-US_TOPIC_0013771092__b1045710382410">Expanding</strong>, you are not allowed to modify the specifications of the <span id="EN-US_TOPIC_0013771092__text163331642194016">ECS</span> where the disk is attached.</li><li id="EN-US_TOPIC_0013771092__li14961154101510">Before modifying the specifications of a Windows ECS, modify the SAN policy by following the instructions provided in <a href="en-us_topic_0114225937.html">Why Does a Disk Attached to a Windows ECS Go Offline?</a> to prevent disks from going offline after the specifications are modified.</li><li id="EN-US_TOPIC_0013771092__li883917325184">Before modifying specifications, make sure that the <span id="EN-US_TOPIC_0013771092__text17235243154011">ECS</span> has been stopped.</li></ul>
<div class="section" id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_section57753505172833"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_ul35475327193536"><li id="EN-US_TOPIC_0013771092__li059731619453">The ECS needs to be stopped during the specification modification, so you are advised to perform this operation during off-peak hours.</li><li id="EN-US_TOPIC_0013771092__li168827587416">During the specification modification, do not perform any operation on the <span id="EN-US_TOPIC_0013771092__text624921414422">ECS</span>, such as stopping or restarting the ECS. Otherwise, the modification will fail.</li><li id="EN-US_TOPIC_0013771092__en-us_topic_0013859511_li63799810105126">Downgrading ECS specifications (vCPUs or memory) will reduce performance.</li><li id="EN-US_TOPIC_0013771092__li344174672418">Certain ECS types do not support specifications modification. For details about ECS types and functions, see <a href="en-us_topic_0132345719.html">ECS Specifications</a>. For details about constraints on using different types of ECSs, see their notes.</li><li id="EN-US_TOPIC_0013771092__li143963249488">When the disk status is <strong id="EN-US_TOPIC_0013771092__b1045710382410">Expanding</strong>, you are not allowed to modify the specifications of the <span id="EN-US_TOPIC_0013771092__text163331642194016">ECS</span> where the disk is attached.</li><li id="EN-US_TOPIC_0013771092__li14961154101510">Before modifying the specifications of a Windows ECS, modify the SAN policy by following the instructions provided in <a href="en-us_topic_0114225937.html">Why Does a Disk Attached to a Windows ECS Go Offline?</a> to prevent disks from going offline after the specifications are modified.</li><li id="EN-US_TOPIC_0013771092__li883917325184">Before modifying specifications, make sure that the <span id="EN-US_TOPIC_0013771092__text17235243154011">ECS</span> has been stopped.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0013771092__section997143905215"><h4 class="sectiontitle">Step 1: Modify Specifications</h4><ol id="EN-US_TOPIC_0013771092__ol97324075216"><li id="EN-US_TOPIC_0013771092__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0013771092__li464234814566">Click <span><img id="EN-US_TOPIC_0013771092__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771092__li17112406525">Under <strong id="EN-US_TOPIC_0013771092__b139798429452"><span id="EN-US_TOPIC_0013771092__text14978114215453">Computing</span></strong>, click <strong id="EN-US_TOPIC_0013771092__b179795429455">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771092__li117214409522">On the <strong id="EN-US_TOPIC_0013771092__b1234022165217">Elastic Cloud Server</strong> page, view the status of the target <span id="EN-US_TOPIC_0013771092__text10467144714020">ECS</span>.<p id="EN-US_TOPIC_0013771092__p144608369486">If the ECS is not in <strong id="EN-US_TOPIC_0013771092__b842352706113828">Stopped</strong> state, choose <strong id="EN-US_TOPIC_0013771092__b842352706113834">More</strong> &gt; <strong id="EN-US_TOPIC_0013771092__b842352706123127">Stop</strong> in the <strong id="EN-US_TOPIC_0013771092__b133847578419153">Operation</strong> column.</p>
</li><li id="EN-US_TOPIC_0013771092__li572184075211">Choose <strong id="EN-US_TOPIC_0013771092__b25955399219229">More</strong> &gt; <strong id="EN-US_TOPIC_0013771092__b84235270619250">Modify Specifications</strong> in the <strong id="EN-US_TOPIC_0013771092__b211788459919229">Operation</strong> column.<p id="EN-US_TOPIC_0013771092__p20946954194414">The <strong id="EN-US_TOPIC_0013771092__b9744134517453">Modify ECS Specifications</strong> page is displayed.</p>

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<ul id="EN-US_TOPIC_0013771110__ul10537368143327"><li id="EN-US_TOPIC_0013771110__li39446482143330">To prevent a sudden load increase, you are advised to start or stop a small number of ECSs at a time.</li><li id="EN-US_TOPIC_0013771110__li3892465143327">If an ECS remains in the <strong id="EN-US_TOPIC_0013771110__b7348212444">Restarting</strong> or <strong id="EN-US_TOPIC_0013771110__b1849962519444">Stopping</strong> state for a long time, you can forcibly restart or stop it. In such a case, any unsaved data on the ECS will be lost. Therefore, exercise caution when forcibly restarting or stopping an ECS.</li></ul>
<div class="note" id="EN-US_TOPIC_0013771110__note1763481284"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p1361648584">For bare metal ECSs (with physical flavors) such as C7t ECSs, do not run commands such as <strong id="EN-US_TOPIC_0013771110__b97961308279">shutdown</strong>, <strong id="EN-US_TOPIC_0013771110__b1379780132719">poweoff</strong>, or <strong id="EN-US_TOPIC_0013771110__b37971803278">half</strong> in the OS because the commands may be invalid or the ECS may fail to be started after being stopped.</p>
</div></div>
<div class="section" id="EN-US_TOPIC_0013771110__section14434185919356"><h4 class="sectiontitle">Starting ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol1815054814377"><li id="EN-US_TOPIC_0013771110__li1115013481371">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li464234814566">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li536619270399">Under <strong id="EN-US_TOPIC_0013771110__b415143114319"><span id="EN-US_TOPIC_0013771110__text12526437192810">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b49771051164320">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li7498532103919">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li5545104233912">Click <strong id="EN-US_TOPIC_0013771110__b106541324145810">Start</strong> in the upper left corner of the list.</li><li id="EN-US_TOPIC_0013771110__li725973819117">In the displayed window, click <strong id="EN-US_TOPIC_0013771110__b17440161714518">OK</strong>.<div class="note" id="EN-US_TOPIC_0013771110__note171497211231"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p10150921836">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1050510213118">Starting</strong> state for more than 30 minutes.</p>
<div class="section" id="EN-US_TOPIC_0013771110__section14434185919356"><h4 class="sectiontitle">Starting ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol1815054814377"><li id="EN-US_TOPIC_0013771110__li1115013481371">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li464234814566">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li536619270399">Under <strong id="EN-US_TOPIC_0013771110__b415143114319"><span id="EN-US_TOPIC_0013771110__text12526437192810">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b49771051164320">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li7498532103919">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li5545104233912">Click <strong id="EN-US_TOPIC_0013771110__b106541324145810">Start</strong> in the upper left corner of the list.</li><li id="EN-US_TOPIC_0013771110__li725973819117">In the displayed window, click <strong id="EN-US_TOPIC_0013771110__b17440161714518">OK</strong> to start the selected ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note171497211231"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p10150921836">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1050510213118">Starting</strong> state for more than 30 minutes.</p>
</div></div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0013771110__section1777940307"><h4 class="sectiontitle">Stopping ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol178640702"><li id="EN-US_TOPIC_0013771110__li107894014011">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li16781401508">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li37815401503">Under <strong id="EN-US_TOPIC_0013771110__b2077846594"><span id="EN-US_TOPIC_0013771110__text1543464321">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b861510538">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li17788401701">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li1978340107">Click <strong id="EN-US_TOPIC_0013771110__b12444104218120">Stop</strong> in the upper left corner of the list.</li><li id="EN-US_TOPIC_0013771110__li1622618482513">In the displayed dialog box, select <strong id="EN-US_TOPIC_0013771110__b86757252614">Forcibly stop the preceding ECSs</strong> based on your service requirements.<div class="notice" id="EN-US_TOPIC_0013771110__note14575817126"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0013771110__p17595816128">After an ECS is forcibly stopped, unsaved data on the ECS will be lost.</p>
<div class="section" id="EN-US_TOPIC_0013771110__section1777940307"><h4 class="sectiontitle">Stopping ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol178640702"><li id="EN-US_TOPIC_0013771110__li107894014011">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li16781401508">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li37815401503">Under <strong id="EN-US_TOPIC_0013771110__b1396455369"><span id="EN-US_TOPIC_0013771110__text1026225359">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b1757806829">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li17788401701">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li1978340107">Click <strong id="EN-US_TOPIC_0013771110__b12444104218120">Stop</strong> in the upper left corner of the list.</li><li id="EN-US_TOPIC_0013771110__li1622618482513">In the displayed dialog box, select <strong id="EN-US_TOPIC_0013771110__b86757252614">Forcibly stop the preceding ECSs</strong> based on your service requirements.<div class="notice" id="EN-US_TOPIC_0013771110__note14575817126"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0013771110__p17595816128">After an ECS is forcibly stopped, unsaved data on the ECS will be lost.</p>
<p id="EN-US_TOPIC_0013771110__p51026124329">ECSs with physical flavors, such as C7t ECSs, only support the force stop option. Ensure that you have saved all files on those ECSs.</p>
</div></div>
</li><li id="EN-US_TOPIC_0013771110__li16794406015">Click <strong id="EN-US_TOPIC_0013771110__b196941158456">OK</strong> to stop the ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note1179134019014"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p19793401906">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1353172617618">Stopping</strong> state for more than 30 minutes.</p>
</li><li id="EN-US_TOPIC_0013771110__li16794406015">Click <strong id="EN-US_TOPIC_0013771110__b196941158456">OK</strong> to stop the selected ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note1179134019014"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p19793401906">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1353172617618">Stopping</strong> state for more than 30 minutes.</p>
</div></div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0013771110__section520563714015"><h4 class="sectiontitle">Restarting ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol1020563717017"><li id="EN-US_TOPIC_0013771110__li1520523711013">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li62063371603">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121_2" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li42063371017">Under <strong id="EN-US_TOPIC_0013771110__b608710898"><span id="EN-US_TOPIC_0013771110__text1299079257">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b1171062754">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li122061376016">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li5206123715017">Click <strong id="EN-US_TOPIC_0013771110__b1318820253711">Restart</strong> in the upper left corner of the list.<div class="notice" id="EN-US_TOPIC_0013771110__note265315011017"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0013771110__p11653140141014">After an ECS is forcibly restarted, unsaved data on the ECS will be lost.</p>
<div class="section" id="EN-US_TOPIC_0013771110__section520563714015"><h4 class="sectiontitle">Restarting ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol1020563717017"><li id="EN-US_TOPIC_0013771110__li1520523711013">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li62063371603">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121_2" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li42063371017">Under <strong id="EN-US_TOPIC_0013771110__b1206959427"><span id="EN-US_TOPIC_0013771110__text812017180">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b1379684917">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li122061376016">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li5206123715017">Click <strong id="EN-US_TOPIC_0013771110__b1318820253711">Restart</strong> in the upper left corner of the list.<div class="notice" id="EN-US_TOPIC_0013771110__note265315011017"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0013771110__p11653140141014">After an ECS is forcibly restarted, unsaved data on the ECS will be lost.</p>
</div></div>
</li><li id="EN-US_TOPIC_0013771110__li920773710015">Click <strong id="EN-US_TOPIC_0013771110__b45781140971">OK</strong> to stop the ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note162076371706"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p620715371007">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1998114319719">Restarting</strong> state for more than 30 minutes.</p>
</li><li id="EN-US_TOPIC_0013771110__li920773710015">Click <strong id="EN-US_TOPIC_0013771110__b45781140971">OK</strong> to restart the selected ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note162076371706"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p620715371007">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1998114319719">Restarting</strong> state for more than 30 minutes.</p>
</div></div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0013771110__section144572474619"><h4 class="sectiontitle">Deleting an ECS</h4><ol id="EN-US_TOPIC_0013771110__ol2446824134611"><li id="EN-US_TOPIC_0013771110__li8446824124613">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li144461024164614">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121_3" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li177711582918">Under <strong id="EN-US_TOPIC_0013771110__b57476145407"><span id="EN-US_TOPIC_0013771110__text117474144404">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b1774841464017">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li04471924194610">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li114473245465">Click <strong id="EN-US_TOPIC_0013771110__b1863182592318">Delete</strong> in the upper left corner of the list.<div class="note" id="EN-US_TOPIC_0013771110__note17451152419466"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p17451124174618">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b816815910253">Deleting</strong> state for more than 30 minutes.</p>
<div class="section" id="EN-US_TOPIC_0013771110__section144572474619"><h4 class="sectiontitle">Deleting an ECS</h4><ol id="EN-US_TOPIC_0013771110__ol2446824134611"><li id="EN-US_TOPIC_0013771110__li8446824124613">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li144461024164614">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0014250631_image1862675853202121_3" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0013771110__li177711582918">Under <strong id="EN-US_TOPIC_0013771110__b57476145407"><span id="EN-US_TOPIC_0013771110__text117474144404">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b1774841464017">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li04471924194610">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li114473245465">Choose <strong id="EN-US_TOPIC_0013771110__b20250131514119">More</strong> &gt; <strong id="EN-US_TOPIC_0013771110__b1863182592318">Delete</strong> in the upper left corner of the list.<div class="note" id="EN-US_TOPIC_0013771110__note17451152419466"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p17451124174618">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b34977551301">Deleting</strong> state for more than 30 minutes.</p>
</div></div>
</li></ol>
</div>

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<a name="EN-US_TOPIC_0017130261"></a><a name="EN-US_TOPIC_0017130261"></a>
<h1 class="topictitle1">Viewing ECS Details (List View)</h1>
<h1 class="topictitle1">Viewing ECS Details</h1>
<div id="body1435883576187"><div class="section" id="EN-US_TOPIC_0017130261__section3759917014179"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0017130261__p2563394814179">After obtaining <span id="EN-US_TOPIC_0017130261__text95540359913">ECS</span>s, you can view and manage them on the management console. This section describes how to view <span id="EN-US_TOPIC_0017130261__text128503371694">ECS</span> configuration details, including its name, image, system disk, data disks, VPC, network interfaces, security group, <span id="EN-US_TOPIC_0017130261__text1950318107244">EIP</span> address, and bandwidth.</p>
<p id="EN-US_TOPIC_0017130261__p1177410251818">To view the private IP address of an <span id="EN-US_TOPIC_0017130261__text732212402912">ECS</span>, view it on the <strong id="EN-US_TOPIC_0017130261__b143545713161">Elastic Cloud Server</strong> page.</p>
</div>
<div class="section" id="EN-US_TOPIC_0017130261__section2937894314179"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0017130261__ol3088417414179"><li id="EN-US_TOPIC_0017130261__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0017130261__li464234814566">Click <span><img id="EN-US_TOPIC_0017130261__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0017130261__li1859019014179">Under <strong id="EN-US_TOPIC_0017130261__b5435723111211"><span id="EN-US_TOPIC_0017130261__text10435152314126">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0017130261__b19435323191214">Elastic Cloud Server</strong>.<p id="EN-US_TOPIC_0017130261__p28383428216">The <strong id="EN-US_TOPIC_0017130261__b66319339129">Elastic Cloud Server</strong> page is displayed. On this page, you can view your <span id="EN-US_TOPIC_0017130261__text1163233151211">ECS</span>s and the basic information about the <span id="EN-US_TOPIC_0017130261__text6638336129">ECS</span>s, such as their specifications, images, and IP addresses.</p>
<div class="section" id="EN-US_TOPIC_0017130261__section2937894314179"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0017130261__ol3088417414179"><li id="EN-US_TOPIC_0017130261__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0017130261__li464234814566">Click <span><img id="EN-US_TOPIC_0017130261__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0017130261__li1859019014179">Under <strong id="EN-US_TOPIC_0017130261__b666920316916"><span id="EN-US_TOPIC_0017130261__text8668436913">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0017130261__b11669173795">Elastic Cloud Server</strong>.<p id="EN-US_TOPIC_0017130261__p28383428216">The <strong id="EN-US_TOPIC_0017130261__b66319339129">Elastic Cloud Server</strong> page is displayed. On this page, you can view the <span id="EN-US_TOPIC_0017130261__text1163233151211">ECS</span>s you have created as well as their details such as the specifications, images, and IP addresses.</p>
</li><li id="EN-US_TOPIC_0017130261__li5741957114179">In the search box above the ECS list, select a filter (such as ECS name, ID, or private IP address), enter the corresponding information, and press <strong id="EN-US_TOPIC_0017130261__b20682145420455">Enter</strong>. </li><li id="EN-US_TOPIC_0017130261__li1472787014179">Click the name of the target <span id="EN-US_TOPIC_0017130261__text83910499918">ECS</span>.<p id="EN-US_TOPIC_0017130261__p216070221280">The page providing details about the <span id="EN-US_TOPIC_0017130261__text0939849496">ECS</span> is displayed.</p>
</li><li id="EN-US_TOPIC_0017130261__li5210683614179">View the <span id="EN-US_TOPIC_0017130261__text17922750899">ECS</span> details.<p id="EN-US_TOPIC_0017130261__p4939654514179">You can click the tabs and perform operations. For details, see <a href="en-us_topic_0093492517.html">Changing a Security Group</a>, <a href="en-us_topic_0093492518.html">Attaching a Network Interface</a>, <a href="en-us_topic_0183019669.html">Adding Tags</a>, and <a href="en-us_topic_0174917535.html">Binding an EIP</a>.</p>
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<h1 class="topictitle1">Logging In to a Linux ECS Using an SSH Key Pair</h1>
<div id="body1437210781593"><div class="section" id="EN-US_TOPIC_0017955380__section1547194115913"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0017955380__p112185456913">This section describes how to use an SSH key pair to remotely log in to a Linux ECS from a Windows and a Linux server, respectively.</p>
</div>
<div class="section" id="EN-US_TOPIC_0017955380__section6801971111724"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0017955380__ul14088797111724"><li id="EN-US_TOPIC_0017955380__li8057630204858">You have obtained the private key file used for creating the ECS. For details about how to create a key pair, see <a href="en-us_topic_0000001278350057.html">(Recommended) Creating a Key Pair on the Management Console</a>.</li><li id="EN-US_TOPIC_0017955380__li59690312111724">You have bound an <span id="EN-US_TOPIC_0017955380__text1281813161820">EIP</span> to the <span id="EN-US_TOPIC_0017955380__text1881818161127">ECS</span>. For details, see <a href="en-us_topic_0017130261.html">Viewing ECS Details (List View)</a>.</li></ul>
<div class="section" id="EN-US_TOPIC_0017955380__section6801971111724"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0017955380__ul14088797111724"><li id="EN-US_TOPIC_0017955380__li8057630204858">You have obtained the private key file used for creating the ECS. For details about how to create a key pair, see <a href="en-us_topic_0000001278350057.html">(Recommended) Creating a Key Pair on the Management Console</a>.</li><li id="EN-US_TOPIC_0017955380__li59690312111724">You have bound an <span id="EN-US_TOPIC_0017955380__text1281813161820">EIP</span> to the <span id="EN-US_TOPIC_0017955380__text1881818161127">ECS</span>. For details, see <a href="en-us_topic_0017130261.html">Viewing ECS Details</a>.</li></ul>
</div>
<ul id="EN-US_TOPIC_0017955380__ul341899111724"><li id="EN-US_TOPIC_0017955380__li3077095111724">You have configured the inbound rules of the security group. For details, see <a href="en-us_topic_0030878383.html">Configuring Security Group Rules</a>.</li><li id="EN-US_TOPIC_0017955380__li23377058164348">The network connection between the login tool (PuTTY) and the target <span id="EN-US_TOPIC_0017955380__text912922101412">ECS</span> is normal. For example, the default port 22 is not blocked by the firewall.</li></ul>
<div class="section" id="EN-US_TOPIC_0017955380__section47918167111724"><a name="EN-US_TOPIC_0017955380__section47918167111724"></a><a name="section47918167111724"></a><h4 class="sectiontitle">Logging In to a Linux ECS from a Local Windows Server</h4><p id="EN-US_TOPIC_0017955380__p56166336111724">You have two methods to log in to a Linux <span id="EN-US_TOPIC_0017955380__text9196132313143">ECS</span> from a local Windows server.</p>

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<h1 class="topictitle1">Logging In to a Windows ECS Using MSTSC</h1>
<div id="body1437210781594"><div class="section" id="EN-US_TOPIC_0017955381__section119451029135512"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0017955381__p2051937011921">This section describes how to use the remote login tool MSTSC to log in to a Windows <span id="EN-US_TOPIC_0017955381__text1360192010129">ECS</span> from a local computer.</p>
</div>
<div class="section" id="EN-US_TOPIC_0017955381__section30111449112059"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0017955381__ul23108310112059"><li id="EN-US_TOPIC_0017955381__li18354497116">The target <span id="EN-US_TOPIC_0017955381__text1740721175119">ECS</span> is running.</li><li id="EN-US_TOPIC_0017955381__li21744107205119">You have obtained the password for logging in to the Windows ECS. For details, see <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</li><li id="EN-US_TOPIC_0017955381__li6648204112059">You have bound an <span id="EN-US_TOPIC_0017955381__text879438191612">EIP</span> to the <span id="EN-US_TOPIC_0017955381__text127947851619">ECS</span>. For details, see <a href="en-us_topic_0174917535.html">Binding an EIP</a>.</li></ul>
<div class="section" id="EN-US_TOPIC_0017955381__section30111449112059"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0017955381__ul23108310112059"><li id="EN-US_TOPIC_0017955381__li18354497116">The target <span id="EN-US_TOPIC_0017955381__text1740721175119">ECS</span> is running.</li><li id="EN-US_TOPIC_0017955381__li21744107205119">You have obtained the password for logging in to the Windows ECS. For details, see <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</li><li id="EN-US_TOPIC_0017955381__li6648204112059">You have bound an <span id="EN-US_TOPIC_0017955381__text629743012918">EIP</span> to the <span id="EN-US_TOPIC_0017955381__text11297143011293">ECS</span>. For details, see <a href="en-us_topic_0174917535.html">Binding an EIP</a>.</li></ul>
<ul id="EN-US_TOPIC_0017955381__ul59833840112059"><li id="EN-US_TOPIC_0017955381__li1633651112059">Access to port 3389 is allowed in the inbound direction of the security group which the ECS belongs to. For details, see <a href="en-us_topic_0030878383.html">Configuring Security Group Rules</a>.</li><li id="EN-US_TOPIC_0017955381__li39291782164659">The network connection between the login tool and the target <span id="EN-US_TOPIC_0017955381__text1162262525210">ECS</span> is normal. For example, the default port 3389 is not blocked by the firewall.</li><li id="EN-US_TOPIC_0017955381__li1180914813562">Remote Desktop Protocol (RDP) needs to be enabled on the target <span id="EN-US_TOPIC_0017955381__text16646742165210">ECS</span>. For <span id="EN-US_TOPIC_0017955381__text5312114445215">ECS</span>s created using public images, RDP has been enabled by default. For instructions about how to enable RDP, see <a href="#EN-US_TOPIC_0017955381__section65216898112059">Enabling RDP</a>.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0017955381__section1011913410314"><h4 class="sectiontitle">Logging In to a Windows ECS Using MSTSC</h4><p id="EN-US_TOPIC_0017955381__p16299256133">If your local server runs Windows, you can use the remote desktop connection tool MSTSC delivered with the Windows OS to log in to a Windows <span id="EN-US_TOPIC_0017955381__text12183161512">ECS</span>.</p>
<ol id="EN-US_TOPIC_0017955381__ol8411414453"><li id="EN-US_TOPIC_0017955381__li1341101415517">Click the start menu on the local server.</li><li id="EN-US_TOPIC_0017955381__li11411121415519">In the <strong id="EN-US_TOPIC_0017955381__b84235270694226">Search programs and files</strong> text box, enter <strong id="EN-US_TOPIC_0017955381__b84235270694448">mstsc</strong>.</li><li id="EN-US_TOPIC_0017955381__li171035522613">In the <strong id="EN-US_TOPIC_0017955381__b84235270694543">Remote Desktop Connection</strong> dialog box, click <strong id="EN-US_TOPIC_0017955381__b8423527069463">Show Options</strong>.<div class="fignone" id="EN-US_TOPIC_0017955381__en-us_topic_0027290684_fig22996848191913"><span class="figcap"><b>Figure 1 </b>Show Options</span><br><span><img id="EN-US_TOPIC_0017955381__image1150418145412" src="en-us_image_0295941039.png" title="Click to enlarge" class="imgResize"></span></div>
<ol id="EN-US_TOPIC_0017955381__ol8411414453"><li id="EN-US_TOPIC_0017955381__li1341101415517">Click the start menu on the local server.</li><li id="EN-US_TOPIC_0017955381__li11411121415519">In the <strong id="EN-US_TOPIC_0017955381__b84235270694226">Search programs and files</strong> text box, enter <strong id="EN-US_TOPIC_0017955381__b84235270694448">mstsc</strong>.</li><li id="EN-US_TOPIC_0017955381__li171035522613">In the <strong id="EN-US_TOPIC_0017955381__b84235270694543">Remote Desktop Connection</strong> dialog box, click <strong id="EN-US_TOPIC_0017955381__b8423527069463">Show Options</strong>.<div class="fignone" id="EN-US_TOPIC_0017955381__en-us_topic_0027290684_fig22996848191913"><span class="figcap"><b>Figure 1 </b>Showing options</span><br><span><img id="EN-US_TOPIC_0017955381__image1150418145412" src="en-us_image_0295941039.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0017955381__li158591031480">Enter the <span id="EN-US_TOPIC_0017955381__text132119591479">EIP</span> and username (<strong id="EN-US_TOPIC_0017955381__b749154535312">Administrator</strong> by default) of the target ECS.<div class="note" id="EN-US_TOPIC_0017955381__note1123220331211"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0017955381__p748312441217">If you do not want to enter the username and password in follow-up logins, select <strong id="EN-US_TOPIC_0017955381__b84235270695751">Allow me to save credentials</strong>.</p>
</div></div>
<div class="fignone" id="EN-US_TOPIC_0017955381__fig61897111106"><span class="figcap"><b>Figure 2 </b>Remote Desktop Connection</span><br><span><img id="EN-US_TOPIC_0017955381__image117251944115416" src="en-us_image_0295941040.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0017955381__li46032050890">(Optional) To use local server resources in a remote session, configure parameters on the <strong id="EN-US_TOPIC_0017955381__b84235270610056">Local Resources</strong> tab.<div class="p" id="EN-US_TOPIC_0017955381__p81785483580">To copy data from the local server to your ECS, select <strong id="EN-US_TOPIC_0017955381__b197691024131611">Clipboard</strong>.<div class="fignone" id="EN-US_TOPIC_0017955381__fig5308424112111"><span class="figcap"><b>Figure 3 </b>Clipboard</span><br><span><img id="EN-US_TOPIC_0017955381__image185310266550" src="en-us_image_0295941041.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0017955381__li46032050890">(Optional) To use local server resources in a remote session, configure parameters on the <strong id="EN-US_TOPIC_0017955381__b84235270610056">Local Resources</strong> tab.<div class="p" id="EN-US_TOPIC_0017955381__p81785483580">To copy data from the local server to your ECS, select <strong id="EN-US_TOPIC_0017955381__b1689115520306">Clipboard</strong>.<div class="fignone" id="EN-US_TOPIC_0017955381__fig5308424112111"><span class="figcap"><b>Figure 3 </b>Clipboard</span><br><span><img id="EN-US_TOPIC_0017955381__image185310266550" src="en-us_image_0295941041.png" title="Click to enlarge" class="imgResize"></span></div>
</div>
<div class="p" id="EN-US_TOPIC_0017955381__p8334104475810">To copy files from the local server to your ECS, click <strong id="EN-US_TOPIC_0017955381__b1741792411618">More</strong> and select your desired disks.<div class="fignone" id="EN-US_TOPIC_0017955381__fig2016145215213"><span class="figcap"><b>Figure 4 </b>Drives</span><br><span><img id="EN-US_TOPIC_0017955381__image1710017512568" src="en-us_image_0295940977.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="p" id="EN-US_TOPIC_0017955381__p8334104475810">To copy files from the local server to your ECS, click <strong id="EN-US_TOPIC_0017955381__b1451039193011">More</strong> and select your desired disks.<div class="fignone" id="EN-US_TOPIC_0017955381__fig2016145215213"><span class="figcap"><b>Figure 4 </b>Drives</span><br><span><img id="EN-US_TOPIC_0017955381__image1710017512568" src="en-us_image_0295940977.png" title="Click to enlarge" class="imgResize"></span></div>
</div>
</li><li id="EN-US_TOPIC_0017955381__li12495123731414">(Optional) Click the <strong id="EN-US_TOPIC_0017955381__b842352706115448">Display</strong> tab and then adjust the size of the remote desktop.<div class="fignone" id="EN-US_TOPIC_0017955381__fig45767599405"><span class="figcap"><b>Figure 5 </b>Adjusting the size of the desktop</span><br><span><img id="EN-US_TOPIC_0017955381__image486195216567" src="en-us_image_0295940978.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0017955381__li20171183316190">Click <strong id="EN-US_TOPIC_0017955381__b76459279169">Connect</strong> and enter the login password as prompted to log in to the ECS.<p id="EN-US_TOPIC_0017955381__p2411121419511">To ensure system security, change the login password after you log in to the ECS for the first time.</p>
</li><li id="EN-US_TOPIC_0017955381__li20171183316190">Click <strong id="EN-US_TOPIC_0017955381__b167356152306">Connect</strong> and enter the login password as prompted to log in to the ECS.<p id="EN-US_TOPIC_0017955381__p2411121419511">To ensure system security, change the login password after you log in to the ECS for the first time.</p>
</li><li id="EN-US_TOPIC_0017955381__li6120180220727">(Optional) Copy local files to the Windows ECS using clipboard. If the file size is greater than 2 GB, an error will occur.<p id="EN-US_TOPIC_0017955381__p5283113020729"><a name="EN-US_TOPIC_0017955381__li6120180220727"></a><a name="li6120180220727"></a>To resolve this issue, see <a href="https://learn.microsoft.com/en-us/troubleshoot/windows-server/remote/copying-2-gb-file-by-clipboard-redirection-fails" target="_blank" rel="noopener noreferrer">troubleshooting cases</a>.</p>
</li></ol>
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<h1 class="topictitle1">How Quickly Can I Obtain an <span id="text19902163112480">ECS</span>?</h1>
<div id="body1437550181838"><p id="EN-US_TOPIC_0018073212__p12319777165154">Obtaining an <span id="EN-US_TOPIC_0018073212__text1831733711494">ECS</span> can take as little as a few minutes.</p>
<p id="EN-US_TOPIC_0018073212__p3184717092437">The time it takes to obtain an <span id="EN-US_TOPIC_0018073212__text175541051104515">ECS</span> depends on <span id="EN-US_TOPIC_0018073212__text10355638124811">ECS</span> specifications, available resources (such as EVS disks and <span id="EN-US_TOPIC_0018073212__text4195115319711">EIP</span>s), and system load.</p>
<p id="EN-US_TOPIC_0018073212__p3184717092437">The time it takes to obtain an <span id="EN-US_TOPIC_0018073212__text193021822123814">ECS</span> depends on <span id="EN-US_TOPIC_0018073212__text10355638124811">ECS</span> specifications, available resources (such as EVS disks and <span id="EN-US_TOPIC_0018073212__text4195115319711">EIP</span>s), and system load.</p>
<div class="note" id="EN-US_TOPIC_0018073212__note8205245113910"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0018073212__p7205154583912">If it takes a long time to obtain your ECS, contact customer service.</p>
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<h1 class="topictitle1">Can Multiple EIPs Be Bound to an ECS?</h1>
<div id="body1437550181838"><div class="section" id="EN-US_TOPIC_0018073216__section1851945163017"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0018073216__p6303405720918">Multiple EIPs can be bound to an ECS, but this operation is not recommended.</p>
<p id="EN-US_TOPIC_0018073216__p19349519165733">If an ECS has multiple NICs attached and you want to bind multiple EIPs to this ECS, you need to configure policy-based routes for these NICs so that these extension NICs can communicate with external networks. For details, see <a href="#EN-US_TOPIC_0018073216__section32091531162222">Configuration Example</a>.</p>
<p id="EN-US_TOPIC_0018073216__p19349519165733">If an ECS has multiple network interfaces attached and you want to bind multiple EIPs to this ECS, you need to configure policy-based routes for these network interfaces so that these extension network interfaces can communicate with external networks. For details, see <a href="#EN-US_TOPIC_0018073216__section32091531162222">Configuration Example</a>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0018073216__section32091531162222"><a name="EN-US_TOPIC_0018073216__section32091531162222"></a><a name="section32091531162222"></a><h4 class="sectiontitle">Configuration Example</h4><p id="EN-US_TOPIC_0018073216__p54619536163151"><a href="#EN-US_TOPIC_0018073216__table10449199163243">Table 1</a> lists <span id="EN-US_TOPIC_0018073216__text661413114314">ECS</span> configurations.</p>
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<div class="notice" id="EN-US_TOPIC_0018073216__note1762381210332"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0018073216__p96231412163313">Exercise caution when deleting the default route because this operation will interrupt the network and result in SSH login failures.</p>
</div></div>
</li><li id="EN-US_TOPIC_0018073216__li16873338164820">Run the following command to configure a new default route:<p id="EN-US_TOPIC_0018073216__p2759619316498"><a name="EN-US_TOPIC_0018073216__li16873338164820"></a><a name="li16873338164820"></a><strong id="EN-US_TOPIC_0018073216__b7933526124213">ip route add 0.0.0.0/0 dev eth1 via 192.168.2.1</strong></p>
<p id="EN-US_TOPIC_0018073216__p52517685164934">In the preceding command, <strong id="EN-US_TOPIC_0018073216__b436782252">192.168.2.1</strong> is the gateway IP address of standby NIC <strong id="EN-US_TOPIC_0018073216__b1354206625">eth1</strong>.</p>
<p id="EN-US_TOPIC_0018073216__p52517685164934">In the preceding command, <strong id="EN-US_TOPIC_0018073216__b1204403071">192.168.2.1</strong> is the gateway IP address of standby NIC <strong id="EN-US_TOPIC_0018073216__b593285779">eth1</strong>.</p>
</li></ol>
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<h1 class="topictitle1">Can a Deleted <span id="text67001855114819">ECS</span> Be Provisioned Again?</h1>
<div id="body1437550181838"><p id="EN-US_TOPIC_0018073221__p5461115135513">No. <span id="EN-US_TOPIC_0018073221__text1798018592551">ECS</span>s in the <strong id="EN-US_TOPIC_0018073221__b837513162719">Deleted</strong> state cannot provide services and are soon removed from the system.</p>
<p id="EN-US_TOPIC_0018073221__p122162038133516">A deleted <span id="EN-US_TOPIC_0018073221__text36221647175611">ECS</span> is retained in the <span id="EN-US_TOPIC_0018073221__text88085500564">ECS</span> list on the management console only for a short period of time before it is permanently removed from the system.</p>
<p id="EN-US_TOPIC_0018073221__p24653502171051">You can create a new <span id="EN-US_TOPIC_0018073221__text735835123814">ECS</span> with the same specifications again.</p>
<p id="EN-US_TOPIC_0018073221__p24653502171051">You can create another <span id="EN-US_TOPIC_0018073221__text735835123814">ECS</span> of the same specifications.</p>
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<h1 class="topictitle1">Will My <span id="text10861511192310">ECS</span>s Be Deployed in the Same Subnet?</h1>
<div id="body1437566721409"><p id="EN-US_TOPIC_0018078503__p1278892625114">You can configure whether <span id="EN-US_TOPIC_0018078503__text692601422319">ECS</span>s are in the same subnet when creating them.</p>
<p id="EN-US_TOPIC_0018078503__p8210291336">When creating <span id="EN-US_TOPIC_0018078503__text51204541132">ECS</span>s, you can set a VPC and primary network interface to customize the subnet for the <span id="EN-US_TOPIC_0018078503__text11159912649">ECS</span>s.</p>
<p id="EN-US_TOPIC_0018078503__p1110502413113">You can also create a VPC and subnet in advance and deploy the <span id="EN-US_TOPIC_0018078503__text631171011217">ECS</span>s in that subnet when creating <span id="EN-US_TOPIC_0018078503__text1031964291117">ECS</span>s.</p>
<p id="EN-US_TOPIC_0018078503__p1110502413113">You can also create a VPC and subnet in advance and deploy the <span id="EN-US_TOPIC_0018078503__text10174175392612">ECS</span>s in that subnet when creating <span id="EN-US_TOPIC_0018078503__text1031964291117">ECS</span>s.</p>
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<h1 class="topictitle1">Why Can I Remotely Access an ECS But Cannot Ping It?</h1>
<div id="body1437566721410"><div class="section" id="EN-US_TOPIC_0018078505__section112601346131"><h4 class="sectiontitle">Symptom</h4><p id="EN-US_TOPIC_0018078505__p4890913982">You can remotely access an ECS but when you ping the EIP bound to the ECS, the ping operation fails.</p>
<div id="body1437566721410"><div class="section" id="EN-US_TOPIC_0018078505__section112601346131"><h4 class="sectiontitle">Symptom</h4><p id="EN-US_TOPIC_0018078505__p4890913982">You can remotely access an ECS, but when you ping the EIP bound to the ECS, the ping operation fails.</p>
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<div class="section" id="EN-US_TOPIC_0018078505__section20883121316810"><h4 class="sectiontitle">Possible Causes</h4><p id="EN-US_TOPIC_0018078505__p178971413284">A desired inbound rule is not added for the security group, and ICMP is not enabled.</p>
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<h1 class="topictitle1">Do ECSs Support GUI?</h1>
<div id="body1437566841621"><p id="EN-US_TOPIC_0018078523__p8060118">Windows ECSs are managed through a GUI but Linux ECSs are managed through the CLI. You can configure a GUI if required.</p>
<p id="EN-US_TOPIC_0018078523__p146021958204613">Before installing a GUI on an ECS, ensure that the memory is no less than 2 GiB to prevent GUI installation or ECS startup failures.</p>
<p id="EN-US_TOPIC_0018078523__p146021958204613">Before installing a GUI on an ECS, ensure that the idle memory is greater than or equal to 2 GiB. Otherwise, the GUI installation may fail or the ECS cannot be started after the installation.</p>
<div class="p" id="EN-US_TOPIC_0018078523__p888761105710">For details about how to install a Linux OS on the GUI, see the following:<ul id="EN-US_TOPIC_0018078523__ul1354413284110"><li id="EN-US_TOPIC_0018078523__li11544132812113"><a href="en-us_topic_0116634723.html">How Can I Install a GUI on an ECS Running CentOS 6?</a></li><li id="EN-US_TOPIC_0018078523__li145449281516"><a href="en-us_topic_0101604498.html">How Can I Install a GUI on an ECS Running CentOS 7?</a></li><li id="EN-US_TOPIC_0018078523__li12544928611"><a href="en-us_topic_0155136016.html">How Can I Install a GUI on an ECS Running Ubuntu?</a></li><li id="EN-US_TOPIC_0018078523__li185441328014"><a href="en-us_topic_0000001210472883.html">How Can I Install a GUI on an ECS Running Debian?</a></li></ul>
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<h1 class="topictitle1">Creating an <span id="text32330380263">ECS</span></h1>
<h1 class="topictitle1">Creating an <span id="text1802144713915">ECS</span></h1>
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<div class="section" id="EN-US_TOPIC_0024911405__section2641260214160"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0024911405__ul5982276195952"><li id="EN-US_TOPIC_0024911405__li31738699195952">The target <span id="EN-US_TOPIC_0024911405__text158042287207">ECS</span> is stopped.</li><li id="EN-US_TOPIC_0024911405__li4397542520019">The target <span id="EN-US_TOPIC_0024911405__text18074162111">ECS</span> has a system disk attached.</li></ul>
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<div class="section" id="EN-US_TOPIC_0024911405__section58299059111554"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0024911405__ol22026412143346"><li id="EN-US_TOPIC_0024911405__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0024911405__li464234814566">Click <span><img id="EN-US_TOPIC_0024911405__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0024911405__li20776247143354"><a name="EN-US_TOPIC_0024911405__li20776247143354"></a><a name="li20776247143354"></a>Under <strong id="EN-US_TOPIC_0024911405__b6985162535014"><span id="EN-US_TOPIC_0024911405__text119852250500">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0024911405__b798532565015">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0024911405__li237311112214">Locate the row containing the target <span id="EN-US_TOPIC_0024911405__text98741103374">ECS</span> and choose <strong id="EN-US_TOPIC_0024911405__b1487431023717">More</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b38751410113715">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b787591017371">Reinstall OS</strong> in the <strong id="EN-US_TOPIC_0024911405__b188750101378">Operation</strong> column.<p id="EN-US_TOPIC_0024911405__p10373171117212">Only stopped ECSs support OS reinstallation. If the <span id="EN-US_TOPIC_0024911405__text2002534576">ECS</span> is not stopped, stop it before proceeding with reinstallation.</p>
</li><li id="EN-US_TOPIC_0024911405__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0024911405__b67851632192510">Encrypted</strong> option to encrypt the system disk during OS reinstallation.<p id="EN-US_TOPIC_0024911405__p767712438280">To enable encryption, click <span class="uicontrol" id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_uicontrol528614138616"><b>Create Xrole</b></span> to assign KMS access permissions to EVS. If you have rights granting permissions, assign the KMS access permissions to EVS. If you do not have the required permissions, contact the user who has the Security Administrator permissions to assign the KMS access permissions. For details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a></p>
<div class="section" id="EN-US_TOPIC_0024911405__section58299059111554"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0024911405__ol22026412143346"><li id="EN-US_TOPIC_0024911405__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0024911405__li464234814566">Click <span><img id="EN-US_TOPIC_0024911405__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0024911405__li20776247143354"><a name="EN-US_TOPIC_0024911405__li20776247143354"></a><a name="li20776247143354"></a>Under <strong id="EN-US_TOPIC_0024911405__b6985162535014"><span id="EN-US_TOPIC_0024911405__text119852250500">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0024911405__b798532565015">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0024911405__li237311112214">Locate the row containing the target <span id="EN-US_TOPIC_0024911405__text98741103374">ECS</span> and choose <strong id="EN-US_TOPIC_0024911405__b1487431023717">More</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b38751410113715">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b787591017371">Reinstall OS</strong> in the <strong id="EN-US_TOPIC_0024911405__b188750101378">Operation</strong> column.<p id="EN-US_TOPIC_0024911405__p10373171117212">Only stopped ECSs support OS reinstallation. If the <span id="EN-US_TOPIC_0024911405__text1570250056">ECS</span> is not stopped, stop it before proceeding with reinstallation.</p>
</li><li id="EN-US_TOPIC_0024911405__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0024911405__b67851632192510">Encrypted</strong> option to encrypt the system disk during OS reinstallation.<p id="EN-US_TOPIC_0024911405__p767712438280">To enable encryption, click <span class="uicontrol" id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_uicontrol528614138616"><b>Create Xrole</b></span> to grant KMS access permissions to EVS. If you have the granting permission, grant KMS access permissions to EVS. If you do not have the granting permission, contact the user who has the Security Administrator permissions to grant KMS access permissions. For details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a></p>
<p id="EN-US_TOPIC_0024911405__en-us_topic_0144542112_p228631310615">Encryption parameters are as follows:</p>
<ul id="EN-US_TOPIC_0024911405__en-us_topic_0144542112_ul202865131169"><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li14286813962"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b84235270618740">Encryption</strong>: indicates that the EVS disk has been encrypted.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li182868131664"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b8423527061882">Create Xrole</strong>: assigns KMS access permissions to EVS to obtain KMS keys. After the permissions are assigned, follow-up operations do not require assigning permissions again.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li5286191313611"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b144241223203814">Xrole Name</strong>: set to <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b443821453912">EVSAccessKMS</strong>, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li152868131619"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b959511561916">KMS Key Name</strong>: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b2406645144311">Create KMS Key</strong> and create a new one on the KMS console. The default value is <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b626615844413">evs/default</strong>.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li528671319610"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b842352706155046">KMS Key ID</strong>: specifies the ID of the key used by the encrypted data disk.</li></ul>
<ul id="EN-US_TOPIC_0024911405__en-us_topic_0144542112_ul202865131169"><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li14286813962"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b84235270618740">Encryption</strong>: indicates that the EVS disk has been encrypted.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li182868131664"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b22661759591">Create Xrole</strong>: assigns KMS access permissions to EVS to obtain KMS keys. After the permissions are assigned, follow-up operations do not require assigning permissions again.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li5286191313611"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b195081923101418">Xrole Name</strong>: set to <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b115096237146">EVSAccessKMS</strong>, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li152868131619"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b959511561916">KMS Key Name</strong>: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b2406645144311">Create KMS Key</strong> and create a new one on the KMS console. The default value is <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b626615844413">evs/default</strong>.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li528671319610"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b842352706155046">KMS Key ID</strong>: specifies the ID of the key used by the encrypted data disk.</li></ul>
</li><li id="EN-US_TOPIC_0024911405__li23576357205117">(Optional) Select a <strong id="EN-US_TOPIC_0024911405__b84235270615319">License Type</strong> (<strong id="EN-US_TOPIC_0024911405__b842352706153129">Use license from the system</strong> or <strong id="EN-US_TOPIC_0024911405__b842352706153134">Bring your own license (BYOL)</strong>) if the reinstalled OS running on your ECS is billed. For more details, see <a href="en-us_topic_0046566932.html">License Types</a>.<p id="EN-US_TOPIC_0024911405__p46529483205117">The following OSs are billed:</p>
<ul id="EN-US_TOPIC_0024911405__ul55183157205155"><li id="EN-US_TOPIC_0024911405__en-us_topic_0046566932_li2586589022251">SUSE Linux Enterprise Server</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0046566932_li6521605722253">Oracle Enterprise Linux</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0046566932_li37000181205155">Red Hat Enterprise Linux</li></ul>
</li><li id="EN-US_TOPIC_0024911405__li65835346143541">Select the login mode.<p id="EN-US_TOPIC_0024911405__p35928679153231"><a name="EN-US_TOPIC_0024911405__li65835346143541"></a><a name="li65835346143541"></a>If the target <span id="EN-US_TOPIC_0024911405__text22614242316">ECS</span> uses key pair authentication, you can replace the original key pair.</p>

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<div class="note" id="EN-US_TOPIC_0027157850__note1343611566227"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0027157850__p64362056162212">If the <strong id="EN-US_TOPIC_0027157850__b660814817547">sysctl.conf</strong> file does not contain the <strong id="EN-US_TOPIC_0027157850__b13608114814541">net.ipv4.ip_forward</strong> parameter, run the following command to add it:</p>
<p id="EN-US_TOPIC_0027157850__p107321635152314"><strong id="EN-US_TOPIC_0027157850__b1918516579232">echo net.ipv4.ip_forward=1 &gt;&gt; /etc/sysctl.conf</strong></p>
</div></div>
</li><li id="EN-US_TOPIC_0027157850__li437692015548">Press <strong id="EN-US_TOPIC_0027157850__b1066171015610">Esc</strong>, type <strong id="EN-US_TOPIC_0027157850__b16641013564">:wq</strong>, and press <strong id="EN-US_TOPIC_0027157850__b1567111085617">Enter</strong>.<p id="EN-US_TOPIC_0027157850__p1837612202543">The system saves the configurations and exits the vi editor.</p>
</li><li id="EN-US_TOPIC_0027157850__li30002886113959">Press <strong id="EN-US_TOPIC_0027157850__b1066171015610">Esc</strong>, type <strong id="EN-US_TOPIC_0027157850__b16641013564">:wq</strong>, and press <strong id="EN-US_TOPIC_0027157850__b1567111085617">Enter</strong>.<p id="EN-US_TOPIC_0027157850__p48072896113959">The system saves the configurations and exits the vi editor.</p>
</li><li id="EN-US_TOPIC_0027157850__li61723653113959">Apply the change.<p id="EN-US_TOPIC_0027157850__p14314724113959"><a name="EN-US_TOPIC_0027157850__li61723653113959"></a><a name="li61723653113959"></a><strong id="EN-US_TOPIC_0027157850__b1590524113959">sysctl -p /etc/sysctl.conf</strong></p>
</li><li id="EN-US_TOPIC_0027157850__li46434272315"><a name="EN-US_TOPIC_0027157850__li46434272315"></a><a name="li46434272315"></a>Delete the original iptables rules.<p id="EN-US_TOPIC_0027157850__p7389185463120"><a name="EN-US_TOPIC_0027157850__li46434272315"></a><a name="li46434272315"></a><strong id="EN-US_TOPIC_0027157850__b205065483218">iptables -F</strong></p>
</li><li id="EN-US_TOPIC_0027157850__li49419571113959"><a name="EN-US_TOPIC_0027157850__li49419571113959"></a><a name="li49419571113959"></a>Configure source network address translation (SNAT) to enable <span id="EN-US_TOPIC_0027157850__text2053045423910">ECS</span>s in the same network segment to access the Internet through the proxy <span id="EN-US_TOPIC_0027157850__text91921352191313">ECS</span>.<p id="EN-US_TOPIC_0027157850__p54843236113959"><strong id="EN-US_TOPIC_0027157850__b15551319111713">iptables -t nat -A POSTROUTING -o eth0 -s</strong> <em id="EN-US_TOPIC_0027157850__i2995066113959">subnet/netmask-bits</em> <strong id="EN-US_TOPIC_0027157850__b16811994122">-j SNAT --to</strong> <em id="EN-US_TOPIC_0027157850__i35919854113959">nat-instance-ip</em></p>
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</li><li id="EN-US_TOPIC_0027157850__li47056383113959">Check whether SNAT has been configured.<p id="EN-US_TOPIC_0027157850__p43562301113959"><a name="EN-US_TOPIC_0027157850__li47056383113959"></a><a name="li47056383113959"></a><strong id="EN-US_TOPIC_0027157850__b42122957113959">iptables -t nat --list</strong></p>
<p id="EN-US_TOPIC_0027157850__p38885512113959">SNAT has been configured if information similar to <a href="#EN-US_TOPIC_0027157850__fig27598108113959">Figure 2</a> is displayed.</p>
<div class="fignone" id="EN-US_TOPIC_0027157850__fig27598108113959"><a name="EN-US_TOPIC_0027157850__fig27598108113959"></a><a name="fig27598108113959"></a><span class="figcap"><b>Figure 2 </b>Successful SNAT configuration</span><br><span><img id="EN-US_TOPIC_0027157850__image62718780113959" src="en-us_image_0027174005.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0027157850__li66936514113959">Add a route.<ol type="a" id="EN-US_TOPIC_0027157850__ol52176633113959"><li id="EN-US_TOPIC_0027157850__li648610515510">Log in to the management console.</li><li id="EN-US_TOPIC_0027157850__li7951089219">Click <span><img id="EN-US_TOPIC_0027157850__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0027157850__li53470716113959">Under <strong id="EN-US_TOPIC_0027157850__b842352706161257"><span id="EN-US_TOPIC_0027157850__text159160124215">Network</span></strong>, click <strong id="EN-US_TOPIC_0027157850__b842352706161254">Virtual Private Cloud</strong>.</li><li id="EN-US_TOPIC_0027157850__li11474399113959">Choose <strong id="EN-US_TOPIC_0027157850__b18105111173">Route Tables</strong> in the left navigation pane. In the route table list, click a target route table. On the displayed page, click <strong id="EN-US_TOPIC_0027157850__b73147752173149">Add Route</strong>.</li><li id="EN-US_TOPIC_0027157850__li20710484113959">Set route information on the displayed page.<ul id="EN-US_TOPIC_0027157850__ul54496948113959"><li id="EN-US_TOPIC_0027157850__li36160729113959"><strong id="EN-US_TOPIC_0027157850__b1950357449">Destination</strong>: indicates the destination network segment. The default value is <strong id="EN-US_TOPIC_0027157850__b1159987693">0.0.0.0/0</strong>.</li><li id="EN-US_TOPIC_0027157850__li43337918113959"><strong id="EN-US_TOPIC_0027157850__b35193391">Next Hop</strong>: indicates the private IP address of the proxy <span id="EN-US_TOPIC_0027157850__text1514247384">ECS</span>.<p id="EN-US_TOPIC_0027157850__p57011107113959">You can obtain the private IP address of the <span id="EN-US_TOPIC_0027157850__text48821157123917">ECS</span> on the <strong id="EN-US_TOPIC_0027157850__b11550213161515">Elastic Cloud Server</strong> page.</p>
</li><li id="EN-US_TOPIC_0027157850__li66936514113959">Add a route.<ol type="a" id="EN-US_TOPIC_0027157850__ol52176633113959"><li id="EN-US_TOPIC_0027157850__li648610515510">Log in to the management console.</li><li id="EN-US_TOPIC_0027157850__li7951089219">Click <span><img id="EN-US_TOPIC_0027157850__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0027157850__li53470716113959">Under <strong id="EN-US_TOPIC_0027157850__b842352706161257"><span id="EN-US_TOPIC_0027157850__text159160124215">Network</span></strong>, click <strong id="EN-US_TOPIC_0027157850__b842352706161254">Virtual Private Cloud</strong>.</li><li id="EN-US_TOPIC_0027157850__li11474399113959">Choose <strong id="EN-US_TOPIC_0027157850__b18105111173">Route Tables</strong> in the left navigation pane. In the route table list, click a target route table. On the displayed page, click <strong id="EN-US_TOPIC_0027157850__b73147752173149">Add Route</strong>.</li><li id="EN-US_TOPIC_0027157850__li20710484113959">Set route information on the displayed page.<ul id="EN-US_TOPIC_0027157850__ul54496948113959"><li id="EN-US_TOPIC_0027157850__li36160729113959"><strong id="EN-US_TOPIC_0027157850__b1303421824">Destination</strong>: indicates the destination network segment. The default value is <strong id="EN-US_TOPIC_0027157850__b1722147192">0.0.0.0/0</strong>.</li><li id="EN-US_TOPIC_0027157850__li43337918113959"><strong id="EN-US_TOPIC_0027157850__b737373865">Next Hop</strong>: indicates the private IP address of the proxy <span id="EN-US_TOPIC_0027157850__text1976847821">ECS</span>.<p id="EN-US_TOPIC_0027157850__p57011107113959">You can obtain the private IP address of the <span id="EN-US_TOPIC_0027157850__text48821157123917">ECS</span> on the <strong id="EN-US_TOPIC_0027157850__b11550213161515">Elastic Cloud Server</strong> page.</p>
</li></ul>
</li></ol>
</li><li id="EN-US_TOPIC_0027157850__li8776155274817">Delete the added iptables rules as needed.<p id="EN-US_TOPIC_0027157850__p237194319550"><a name="EN-US_TOPIC_0027157850__li8776155274817"></a><a name="li8776155274817"></a><strong id="EN-US_TOPIC_0027157850__b113917801813">iptables -t nat -D POSTROUTING -o eth0 -s</strong> <em id="EN-US_TOPIC_0027157850__i8372144335512">subnet/netmask-bits</em> <strong id="EN-US_TOPIC_0027157850__b1460282592619">-j SNAT --to</strong> <em id="EN-US_TOPIC_0027157850__i5374194312551">nat-instance-ip</em></p>

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<div id="body1457936839864"><div class="section" id="EN-US_TOPIC_0027371531__section38299792222911"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0027371531__p40311482223529">Setting <span id="EN-US_TOPIC_0027371531__text329816144417">ECS</span> alarm rules allows you to customize the monitored objects and notification policies so that you can closely monitor your <span id="EN-US_TOPIC_0027371531__text1924842620522">ECS</span>s.</p>
<p id="EN-US_TOPIC_0027371531__p22430771222915">This section describes how to set <span id="EN-US_TOPIC_0027371531__text17138103144412">ECS</span> alarm rules, including alarm rule names, monitoring objects, monitoring metrics, alarm thresholds, monitoring intervals, and notifications.</p>
</div>
<div class="section" id="EN-US_TOPIC_0027371531__section7969360222918"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0027371531__ol4340316622382"><li id="EN-US_TOPIC_0027371531__li5508418122382">Log in to the management console.</li><li id="EN-US_TOPIC_0027371531__li464234814566">Click <span><img id="EN-US_TOPIC_0027371531__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0027371531__li2599558622382">Under <strong id="EN-US_TOPIC_0027371531__b6415191812176"><span id="EN-US_TOPIC_0027371531__text6834455153510">Management &amp; Deployment</span></strong>, choose <strong id="EN-US_TOPIC_0027371531__b51532316172">Cloud Eye</strong>.</li><li id="EN-US_TOPIC_0027371531__li13187821225633">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0027371531__b842352706141717">Alarm Management</strong> &gt; <strong id="EN-US_TOPIC_0027371531__b842352706141723">Alarm Rules</strong>.</li><li id="EN-US_TOPIC_0027371531__li32623014182110">On the <strong id="EN-US_TOPIC_0027371531__b842352706151722">Alarm Rules</strong> page, click <strong id="EN-US_TOPIC_0027371531__b842352706151737">Create Alarm Rule</strong> to create an alarm rule, or modify an existing alarm rule.<p id="EN-US_TOPIC_0027371531__p25089226182136">The following uses modifying an existing alarm rule as an example.</p>
<ol type="a" id="EN-US_TOPIC_0027371531__ol1418093822382"><li id="EN-US_TOPIC_0027371531__li27152355173633">Click the target alarm rule.</li><li id="EN-US_TOPIC_0027371531__li6051958522382">Click <strong id="EN-US_TOPIC_0027371531__b84235270616432">Modify</strong> in the upper right corner of the page.</li><li id="EN-US_TOPIC_0027371531__li780535922382">In the <strong id="EN-US_TOPIC_0027371531__b495552754814">Modify Alarm Rule</strong> dialog box shown in <a href="#EN-US_TOPIC_0027371531__fig5398007222382">Figure 1</a>, set the parameters as prompted.<div class="fignone" id="EN-US_TOPIC_0027371531__fig5398007222382"><a name="EN-US_TOPIC_0027371531__fig5398007222382"></a><a name="fig5398007222382"></a><span class="figcap"><b>Figure 1 </b>Modifying an alarm rule</span><br><span><img id="EN-US_TOPIC_0027371531__image1743484863710" src="en-us_image_0022382203.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="section" id="EN-US_TOPIC_0027371531__section7969360222918"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0027371531__ol4340316622382"><li id="EN-US_TOPIC_0027371531__li5508418122382">Log in to the management console.</li><li id="EN-US_TOPIC_0027371531__li464234814566">Click <span><img id="EN-US_TOPIC_0027371531__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0027371531__li2599558622382">Under <strong id="EN-US_TOPIC_0027371531__b6857365620"><span id="EN-US_TOPIC_0027371531__text6834455153510">Management &amp; Deployment</span></strong>, choose <strong id="EN-US_TOPIC_0027371531__b138515305610">Cloud Eye</strong>.</li><li id="EN-US_TOPIC_0027371531__li13187821225633">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0027371531__b842352706141717">Alarm Management</strong> &gt; <strong id="EN-US_TOPIC_0027371531__b842352706141723">Alarm Rules</strong>.</li><li id="EN-US_TOPIC_0027371531__li32623014182110">On the <strong id="EN-US_TOPIC_0027371531__b842352706151722">Alarm Rules</strong> page, click <strong id="EN-US_TOPIC_0027371531__b842352706151737">Create Alarm Rule</strong> to create an alarm rule, or modify an existing alarm rule.<p id="EN-US_TOPIC_0027371531__p25089226182136">The following uses modifying an existing alarm rule as an example.</p>
<ol type="a" id="EN-US_TOPIC_0027371531__ol1418093822382"><li id="EN-US_TOPIC_0027371531__li27152355173633">Click the target alarm rule.</li><li id="EN-US_TOPIC_0027371531__li6051958522382">Click <strong id="EN-US_TOPIC_0027371531__b84235270616432">Modify</strong> in the upper right corner of the page.</li><li id="EN-US_TOPIC_0027371531__li780535922382">In the <strong id="EN-US_TOPIC_0027371531__b119041910135616">Modify Alarm Rule</strong> dialog box shown in <a href="#EN-US_TOPIC_0027371531__fig5398007222382">Figure 1</a>, set the parameters as prompted.<div class="fignone" id="EN-US_TOPIC_0027371531__fig5398007222382"><a name="EN-US_TOPIC_0027371531__fig5398007222382"></a><a name="fig5398007222382"></a><span class="figcap"><b>Figure 1 </b>Modifying an alarm rule</span><br><span><img id="EN-US_TOPIC_0027371531__image1743484863710" src="en-us_image_0022382203.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0027371531__li438155322382">Click <strong id="EN-US_TOPIC_0027371531__b15901629194810">Modify</strong>.<p id="EN-US_TOPIC_0027371531__p48954978174047">After an alarm rule is modified, the system automatically notifies you of an alarm when the alarm complying with the alarm rule is generated.</p>
</li></ol>
<div class="note" id="EN-US_TOPIC_0027371531__note3330132182216"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0027371531__p1690110337325">For more information about <span id="EN-US_TOPIC_0027371531__text660581185514">ECS</span> alarm rules, see <em id="EN-US_TOPIC_0027371531__i21479162552">Cloud Eye User Guide</em>.</p>

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<h1 class="topictitle1">Can an ECS Without an EIP Bound Access the Internet?</h1>
<div id="body1462258683339"><p id="EN-US_TOPIC_0030013188__p952982715405">Yes.</p>
<ul id="EN-US_TOPIC_0030013188__ul7474103416333"><li id="EN-US_TOPIC_0030013188__li647416348336">Method 1: Configure a SNAT server.<p id="EN-US_TOPIC_0030013188__p153115102379"><a name="EN-US_TOPIC_0030013188__li647416348336"></a><a name="li647416348336"></a>You can configure the SNAT server so that the ECS without an EIP bound can access the Internet.</p>
<p id="EN-US_TOPIC_0030013188__p91951736113914">For details, see <a href="https://docs.otc.t-systems.com/en-us/usermanual/vpc/vpc_route_0004.html" target="_blank" rel="noopener noreferrer">"Configuring an SNAT Server"</a> in <em id="EN-US_TOPIC_0030013188__i711775778">Virtual Private Cloud User Guide</em>.</p>
<p id="EN-US_TOPIC_0030013188__p91951736113914">For details, see <a href="https://docs.otc.t-systems.com/en-us/usermanual/vpc/vpc_route_0004.html" target="_blank" rel="noopener noreferrer">"Configuring an SNAT Server"</a> in <em id="EN-US_TOPIC_0030013188__i1547556626">Virtual Private Cloud User Guide</em>.</p>
</li><li id="EN-US_TOPIC_0030013188__li14100173743318">Method 2: Create a NAT gateway.<p id="EN-US_TOPIC_0030013188__p6943173893214"><a name="EN-US_TOPIC_0030013188__li14100173743318"></a><a name="li14100173743318"></a>If a large number of concurrent connections are required, it is a good practice to use the NAT Gateway service provided by the cloud platform.</p>
<p id="EN-US_TOPIC_0030013188__p19505735172914">The NAT Gateway service offers the NAT function for ECSs in a VPC, allowing these ECSs to access the Internet using an EIP. For more information about NAT Gateway, see <em id="EN-US_TOPIC_0030013188__i8423526979632">NAT Gateway User Guide</em>.</p>
<p id="EN-US_TOPIC_0030013188__p19505735172914">The NAT Gateway service offers the network address translation (NAT) function for ECSs in a VPC, allowing these ECSs to access the Internet using an EIP. The SNAT function provided by the NAT Gateway service allows the ECSs in a VPC to access the Internet without requiring an EIP. Additionally, SNAT supports a large number of concurrent connections for applications that have a large number of requests and connections. For more information about NAT Gateway, see <em id="EN-US_TOPIC_0030013188__i8423526979632">NAT Gateway User Guide</em>.</p>
</li></ul>
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<tr id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_row22261334165248"><td class="cellrowborder" valign="top" width="18.990000000000002%" headers="mcps1.3.2.2.1.3.1.1 "><p id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_p66134282165248"><span class="keyword" id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_keyword290210687151536">Shared</span></p>
</td>
<td class="cellrowborder" valign="top" width="81.01%" headers="mcps1.3.2.2.1.3.1.2 "><p id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_p573813017812">A shared image is a private image another user has shared with you.</p>
<p id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_p7991323165259">For more information, see "Sharing Images" in <em id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_i135011121165718">Image Management Service User Guide</em>.</p>
<p id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_p7991323165259">For more information, see "Sharing Images" in <em id="EN-US_TOPIC_0030828254__en-us_topic_0013901609_i7116147181016">Image Management Service User Guide</em>.</p>
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<div id="body1463984117562"></div>
<div>
<ul class="ullinks">
<li class="ulchildlink"><strong><a href="en-us_topic_0039588795.html">Viewing ECS Creation Statuses</a></strong><br>
<li class="ulchildlink"><strong><a href="en-us_topic_0039588795.html">Viewing the ECS Creation Status</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0108255889.html">Viewing Failed Tasks</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0017130261.html">Viewing ECS Details (List View)</a></strong><br>
<li class="ulchildlink"><strong><a href="en-us_topic_0017130261.html">Viewing ECS Details</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0060610074.html">Exporting ECS Information</a></strong><br>
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</div>
<div class="section" id="EN-US_TOPIC_0030911465__section24282572112133"><h4 class="sectiontitle">Namespace</h4><p id="EN-US_TOPIC_0030911465__p20731317112133">SYS.ECS</p>
</div>
<div class="section" id="EN-US_TOPIC_0030911465__section1377504154"><h4 class="sectiontitle">Basic ECS Metrics</h4><p id="EN-US_TOPIC_0030911465__p21718060105118">Basic <span id="EN-US_TOPIC_0030911465__text12333112124214">ECS</span> metrics vary depending on <span id="EN-US_TOPIC_0030911465__text178782013184611">ECS</span> OSs and types. For details, see <a href="#EN-US_TOPIC_0030911465__table1474714113454">Table 1</a>.</p>
<div class="section" id="EN-US_TOPIC_0030911465__section1377504154"><h4 class="sectiontitle">Basic ECS Metrics</h4><p id="EN-US_TOPIC_0030911465__p21718060105118">Basic <span id="EN-US_TOPIC_0030911465__text157881553">ECS</span> metrics vary depending on <span id="EN-US_TOPIC_0030911465__text181489554">ECS</span> OSs and types. For details, see <a href="#EN-US_TOPIC_0030911465__table1474714113454">Table 1</a>.</p>
<div class="note" id="EN-US_TOPIC_0030911465__note1041113343510"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><div class="p" id="EN-US_TOPIC_0030911465__p144123341455">To monitor the memory usage and disk usage, you need to install the Agent on your ECS.<ul id="EN-US_TOPIC_0030911465__ul011383163117"><li id="EN-US_TOPIC_0030911465__li1111316318316">For details about how to install the Agent on a Windows ECS, see <a href="https://docs.otc.t-systems.com/cloud-eye/umn/server_monitoring/installing_and_configuring_the_agent_on_a_windows_ecs/installing_and_configuring_the_agent_on_a_windows_server.html" target="_blank" rel="noopener noreferrer">Installing and Configuring the Agent on a Windows Server</a>.</li><li id="EN-US_TOPIC_0030911465__li111607133114">For details about how to install the Agent on a Linux ECS, see <a href="https://docs.otc.t-systems.com/cloud-eye/umn/server_monitoring/installing_and_configuring_the_agent_on_a_linux_ecs_or_bms/installing_the_agent_on_a_linux_server.html#ces-01-0029" target="_blank" rel="noopener noreferrer">Installing the Agent on a Linux Server</a>.</li></ul>
</div>
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<td class="cellrowborder" valign="top" width="13%" headers="mcps1.3.8.2.7.1.2 "><p id="EN-US_TOPIC_0030911465__p65605483141717">InfiniBand NIC status</p>
</td>
<td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.8.2.7.1.3 "><p id="EN-US_TOPIC_0030911465__p12443932141717">Status of an InfiniBand NIC on an H2 <span id="EN-US_TOPIC_0030911465__text1413033194319">ECS</span></p>
<p id="EN-US_TOPIC_0030911465__p1325610141717">The system periodically checks the status and returns check results using value <strong id="EN-US_TOPIC_0030911465__b1349473543">0</strong> or <strong id="EN-US_TOPIC_0030911465__b1535446338">1</strong>.</p>
<ul id="EN-US_TOPIC_0030911465__ul94245295397"><li id="EN-US_TOPIC_0030911465__li58084791141959"><strong id="EN-US_TOPIC_0030911465__b83413381197">0</strong>: The system is running properly. That is, the InfiniBand NIC is functional.</li><li id="EN-US_TOPIC_0030911465__li19426429173919"><strong id="EN-US_TOPIC_0030911465__b301947300">1</strong>: The system is not running properly. That is, the InfiniBand NIC malfunctions. When the physical NIC corresponding to a virtual NIC becomes faulty, for example, the network cable is not securely connected to the NIC, the switch or adapter is incompatible with the InfiniBand NIC, or the NIC is disabled, the returned value is <strong id="EN-US_TOPIC_0030911465__b842352706174428">1</strong>.</li></ul>
<p id="EN-US_TOPIC_0030911465__p1325610141717">The system periodically checks the status and returns check results using value <strong id="EN-US_TOPIC_0030911465__b2136442548">0</strong> or <strong id="EN-US_TOPIC_0030911465__b1400365647">1</strong>.</p>
<ul id="EN-US_TOPIC_0030911465__ul94245295397"><li id="EN-US_TOPIC_0030911465__li58084791141959"><strong id="EN-US_TOPIC_0030911465__b83413381197">0</strong>: The system is running properly. That is, the InfiniBand NIC is functional.</li><li id="EN-US_TOPIC_0030911465__li19426429173919"><strong id="EN-US_TOPIC_0030911465__b2018459661">1</strong>: The system is not running properly. That is, the InfiniBand NIC malfunctions. When the physical NIC corresponding to a virtual NIC becomes faulty, for example, the network cable is not securely connected to the NIC, the switch or adapter is incompatible with the InfiniBand NIC, or the NIC is disabled, the returned value is <strong id="EN-US_TOPIC_0030911465__b842352706174428">1</strong>.</li></ul>
<div class="note" id="EN-US_TOPIC_0030911465__note14324438161653"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0030911465__p61811084161653">Only Mellanox EDR 100 GB single-port InfiniBand NICs are supported.</p>
</div></div>
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<h1 class="topictitle1">Obtaining the Password for Logging In to a Windows <span id="text1595553075814">ECS</span></h1>
<div id="body1464342274212"><div class="section" id="EN-US_TOPIC_0031107266__section83915017466"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0031107266__p5548482995849">Password authentication is required to log in to a Windows <span id="EN-US_TOPIC_0031107266__text2418174235815">ECS</span>. You must use the key file used when you created the <span id="EN-US_TOPIC_0031107266__text9971154710587">ECS</span> to obtain the administrator password generated during <span id="EN-US_TOPIC_0031107266__text18984195862115">ECS</span> creation. The administrator user is <strong id="EN-US_TOPIC_0031107266__b2049513373585">Administrator</strong> or the user configured using Cloudbase-Init. This password is randomly generated, offering high security.</p>
<p id="EN-US_TOPIC_0031107266__p703221995027">You can obtain the initial password for logging in to a Windows <span id="EN-US_TOPIC_0031107266__text66814149599">ECS</span> through the management console or APIs. For details, see this section.</p>
<p id="EN-US_TOPIC_0031107266__p703221995027">You can obtain the initial password for logging in to a Windows <span id="EN-US_TOPIC_0031107266__text3735234162111">ECS</span> through the management console or APIs. For details, see this section.</p>
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<div class="section" id="EN-US_TOPIC_0031107266__section38475220193847"><h4 class="sectiontitle">Obtaining the Password Through the Management Console</h4><ol id="EN-US_TOPIC_0031107266__ol5405292620557"><li id="EN-US_TOPIC_0031107266__li584178495530">Obtain the private key file (.pem file) used when you created the <span id="EN-US_TOPIC_0031107266__text136800010221">ECS</span>.</li><li id="EN-US_TOPIC_0031107266__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0031107266__li464234814566">Click <span><img id="EN-US_TOPIC_0031107266__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0031107266__en-us_topic_0029320966_li40039532224047">Under <strong id="EN-US_TOPIC_0031107266__b1967518220919"><span id="EN-US_TOPIC_0031107266__text7675132211912">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031107266__b176754221695">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031107266__en-us_topic_0029320966_li24833369224047">On the <strong id="EN-US_TOPIC_0031107266__b577318918018">Elastic Cloud Server</strong> page, select the target <span id="EN-US_TOPIC_0031107266__text11584529221">ECS</span>.</li><li id="EN-US_TOPIC_0031107266__li46427097215215">In the <strong id="EN-US_TOPIC_0031107266__b1998335742">Operation</strong> column, click <strong id="EN-US_TOPIC_0031107266__b933092424">More</strong> and select <strong id="EN-US_TOPIC_0031107266__b1334516430">Get Password</strong>.<div class="fignone" id="EN-US_TOPIC_0031107266__fig1599613332547"><span class="figcap"><b>Figure 1 </b>Get Password</span><br><span><img id="EN-US_TOPIC_0031107266__image4997833195414" src="en-us_image_0000001659531420.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="section" id="EN-US_TOPIC_0031107266__section16953246105518"><h4 class="sectiontitle">Prerequisites</h4><p id="EN-US_TOPIC_0031107266__p13966648155514">You have obtained the private key file (.pem file) which was generated during the ECS creation.</p>
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<div class="section" id="EN-US_TOPIC_0031107266__section38475220193847"><h4 class="sectiontitle">Obtaining the Password Through the Management Console</h4><ol id="EN-US_TOPIC_0031107266__ol5405292620557"><li id="EN-US_TOPIC_0031107266__li584178495530">Obtain the private key file (.pem file) used when you created the <span id="EN-US_TOPIC_0031107266__text136800010221">ECS</span>.</li><li id="EN-US_TOPIC_0031107266__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0031107266__li464234814566">Click <span><img id="EN-US_TOPIC_0031107266__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0031107266__en-us_topic_0029320966_li40039532224047">Under <strong id="EN-US_TOPIC_0031107266__b1967518220919"><span id="EN-US_TOPIC_0031107266__text7675132211912">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031107266__b176754221695">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031107266__en-us_topic_0029320966_li24833369224047">On the <strong id="EN-US_TOPIC_0031107266__b577318918018">Elastic Cloud Server</strong> page, select the target <span id="EN-US_TOPIC_0031107266__text11584529221">ECS</span>.</li><li id="EN-US_TOPIC_0031107266__li46427097215215">In the <strong id="EN-US_TOPIC_0031107266__b45775368">Operation</strong> column, click <strong id="EN-US_TOPIC_0031107266__b963972662">More</strong> and select <strong id="EN-US_TOPIC_0031107266__b2079385715">Get Password</strong>.<div class="fignone" id="EN-US_TOPIC_0031107266__fig1599613332547"><span class="figcap"><b>Figure 1 </b>Get Password</span><br><span><img id="EN-US_TOPIC_0031107266__image4997833195414" src="en-us_image_0000001659531420.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0031107266__li50525424215555">Use either of the following methods to obtain the password through the key file:<ul id="EN-US_TOPIC_0031107266__ul6527186921565"><li id="EN-US_TOPIC_0031107266__li1887355017131">Click <strong id="EN-US_TOPIC_0031107266__b842352706144939">Select File</strong> and upload the key file from a local directory.</li><li id="EN-US_TOPIC_0031107266__li42486460215639">Copy the key file content to the text field.</li></ul>
</li><li id="EN-US_TOPIC_0031107266__li18672759215816">Click <strong id="EN-US_TOPIC_0031107266__b102668266317244">Get Password</strong> to obtain a random password.</li></ol>
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<div class="section" id="EN-US_TOPIC_0031107266__section1118765310423"><h4 class="sectiontitle">Obtaining the Password Through APIs</h4><ol id="EN-US_TOPIC_0031107266__ol507546510433"><li id="EN-US_TOPIC_0031107266__li17213488101942">Obtain the private key file (.pem file) used when you created the <span id="EN-US_TOPIC_0031107266__text356411314017">ECS</span>.</li><li id="EN-US_TOPIC_0031107266__li1110886810299">Set up the API calling environment.</li><li id="EN-US_TOPIC_0031107266__li54866977184131">Call APIs. For details, see <a href="https://docs.otc.t-systems.com/api/ecs/en-us_topic_0020805967.html" target="_blank" rel="noopener noreferrer">API Usage Guidelines</a> in <em id="EN-US_TOPIC_0031107266__i84235269711913">Elastic Cloud Server API Reference</em>.</li><li id="EN-US_TOPIC_0031107266__li5770130102852"><a name="EN-US_TOPIC_0031107266__li5770130102852"></a><a name="li5770130102852"></a>Obtain the ciphertext password.<p id="EN-US_TOPIC_0031107266__p44462590102854"><a name="EN-US_TOPIC_0031107266__li5770130102852"></a><a name="li5770130102852"></a>Call the password obtaining APIs to obtain the ciphertext password of the public key encrypted using RSA. The API URI is in the format "GET /v2/{<em id="EN-US_TOPIC_0031107266__i842352697152819">project_id</em>}/servers/{<em id="EN-US_TOPIC_0031107266__i842352697152825">server_id</em>}/os-server-password".</p>
<div class="section" id="EN-US_TOPIC_0031107266__section1118765310423"><h4 class="sectiontitle">Obtaining the Password Through APIs</h4><ol id="EN-US_TOPIC_0031107266__ol507546510433"><li id="EN-US_TOPIC_0031107266__li17213488101942">Obtain the private key file (.pem file) used when you created the <span id="EN-US_TOPIC_0031107266__text356411314017">ECS</span>.</li><li id="EN-US_TOPIC_0031107266__li1110886810299">Set up the API calling environment.</li><li id="EN-US_TOPIC_0031107266__li54866977184131">Call APIs. For details, see <a href="https://docs.otc.t-systems.com/api/ecs/en-us_topic_0020805967.html" target="_blank" rel="noopener noreferrer">API Usage Guidelines</a> in the <em id="EN-US_TOPIC_0031107266__i11898129129">Elastic Cloud Server API Reference</em>.</li><li id="EN-US_TOPIC_0031107266__li5770130102852"><a name="EN-US_TOPIC_0031107266__li5770130102852"></a><a name="li5770130102852"></a>Obtain the ciphertext password.<p id="EN-US_TOPIC_0031107266__p44462590102854"><a name="EN-US_TOPIC_0031107266__li5770130102852"></a><a name="li5770130102852"></a>Call the password obtaining APIs to obtain the ciphertext password of the public key encrypted using RSA. The API URI is in the format "GET /v2/{<em id="EN-US_TOPIC_0031107266__i842352697152819">project_id</em>}/servers/{<em id="EN-US_TOPIC_0031107266__i842352697152825">server_id</em>}/os-server-password".</p>
<div class="note" id="EN-US_TOPIC_0031107266__note58305696141012"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0031107266__p54989223141012">For details, see <a href="https://docs.otc.t-systems.com/elastic-cloud-server/api-ref/native_openstack_nova_apis/key_and_password_management/obtaining_the_password_for_logging_in_to_an_ecs.html#en-us-topic-0031176553" target="_blank" rel="noopener noreferrer">Obtaining the Password for Logging In to an ECS</a>.</p>
</div></div>
</li><li id="EN-US_TOPIC_0031107266__li20331687102654">Decrypt the ciphertext password.<p id="EN-US_TOPIC_0031107266__p28094918102655"><a name="EN-US_TOPIC_0031107266__li20331687102654"></a><a name="li20331687102654"></a>Use the private key file used when you created the ECS to decrypt the ciphertext password obtained in step <a href="#EN-US_TOPIC_0031107266__li5770130102852">4</a>.</p>

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<div class="section" id="EN-US_TOPIC_0031523135__section21723173114530"><h4 class="sectiontitle">Constraints</h4><ul id="EN-US_TOPIC_0031523135__ul66848156141149"><li id="EN-US_TOPIC_0031523135__li68038492239">The OS change takes about 1 to 4 minutes During this process, the <span id="EN-US_TOPIC_0031523135__text1821124103312">ECS</span> status is <strong id="EN-US_TOPIC_0031523135__b128242473318">Changing OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li8803184922312">Do not perform any operations on the ECS before the system injects the password or key, or the login will fail.</li><li id="EN-US_TOPIC_0031523135__li31738699195952">The ECS for which you want to change the OS must be in any of the following states: <strong id="EN-US_TOPIC_0031523135__b13748192124615">Stopped</strong>, <strong id="EN-US_TOPIC_0031523135__b165388615466">Reinstallation failed</strong>, or <strong id="EN-US_TOPIC_0031523135__b9101511124619">Failed to change the OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li4397542520019">The target <span id="EN-US_TOPIC_0031523135__text49488517246">ECS</span> must have a system disk attached.</li><li id="EN-US_TOPIC_0031523135__li61491838141054">The EVS disk quota must be greater than 0.</li><li id="EN-US_TOPIC_0031523135__li799454911582">The system disk type cannot be changed.</li><li id="EN-US_TOPIC_0031523135__li3375642181010">The system disk can be encrypted.</li><li id="EN-US_TOPIC_0031523135__li15800141283111">For details about the change between different OSs, see <a href="#EN-US_TOPIC_0031523135__section1852122261012">Notes on Change Between Windows and Linux</a>.</li><li id="EN-US_TOPIC_0031523135__li5399152414277">If an ECS OS is to be changed using a full-ECS image, the ECS system disk can be encrypted.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0031523135__section34193483165818"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0031523135__ul57938298174117"><li id="EN-US_TOPIC_0031523135__li4523794174117">After the OS is changed, the original OS is not retained, and the original system disk is deleted, including the data in all partitions of the system disk.</li><li id="EN-US_TOPIC_0031523135__li11628132425511">Changing the OS clears the data in all partitions of the system disk, including the system partition. Back up data before changing the OS. </li><li id="EN-US_TOPIC_0031523135__li15142465169">Changing the OS does not affect data in data disks.</li><li id="EN-US_TOPIC_0031523135__li4111648121710">After the OS is changed, your service running environment must be deployed in the new OS again.</li><li id="EN-US_TOPIC_0031523135__li20928142617465">After the OS is changed, the <span id="EN-US_TOPIC_0031523135__text1482784142414">ECS</span> will be automatically started.</li><li id="EN-US_TOPIC_0031523135__li12911023610">After the OS is changed, the system disk type of the ECS cannot be changed.</li><li id="EN-US_TOPIC_0031523135__li3784113720411">After the OS is changed, the IP and MAC addresses of the <span id="EN-US_TOPIC_0031523135__text116191542192414">ECS</span> remain unchanged.</li><li id="EN-US_TOPIC_0031523135__li1996774354616">After the OS is changed, customized configurations, such as DNS and hostname of the original OS will be reset and require reconfiguration.</li><li id="EN-US_TOPIC_0031523135__li153642091262">It takes about 10 to 20 minutes to change the OS. During this process, the <span id="EN-US_TOPIC_0031523135__text84597433244">ECS</span> is in <strong id="EN-US_TOPIC_0031523135__b1965965515210">Changing OS</strong> state.</li><li id="EN-US_TOPIC_0031523135__li439952411274">After the OS is changed, the password for logging in to the ECS is reset. To retrieve the password, perform the following operations:<ul id="EN-US_TOPIC_0031523135__ul1739982472717"><li id="EN-US_TOPIC_0031523135__li1939952412713">For a Linux ECS, log in to it using the key and set a new password. For instructions about how to log in to an ECS using a key pair, see <a href="en-us_topic_0017955380.html">Logging In to a Linux ECS Using an SSH Key Pair</a>.</li><li id="EN-US_TOPIC_0031523135__li73991224142715">For a Windows ECS, retrieve the password by following the instructions provided in <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</li></ul>
<div class="section" id="EN-US_TOPIC_0031523135__section34193483165818"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0031523135__ul57938298174117"><li id="EN-US_TOPIC_0031523135__li4523794174117">After the OS is changed, the original OS is not retained, and the original system disk is deleted, including the data in all partitions of the system disk.</li><li id="EN-US_TOPIC_0031523135__li11628132425511">Changing the OS clears the data in all partitions of the system disk, including the system partition. Back up data before changing the OS. </li><li id="EN-US_TOPIC_0031523135__li15142465169">Changing the OS does not affect data in data disks.</li><li id="EN-US_TOPIC_0031523135__li4111648121710">After the OS is changed, your service running environment must be deployed in the new OS again.</li><li id="EN-US_TOPIC_0031523135__li20928142617465">After the OS is changed, the <span id="EN-US_TOPIC_0031523135__text1482784142414">ECS</span> will be automatically started.</li><li id="EN-US_TOPIC_0031523135__li12911023610">After the OS is changed, the system disk type of the ECS cannot be changed.</li><li id="EN-US_TOPIC_0031523135__li3784113720411">After the OS is changed, the IP and MAC addresses of the <span id="EN-US_TOPIC_0031523135__text116191542192414">ECS</span> remain unchanged.</li><li id="EN-US_TOPIC_0031523135__li1996774354616">After the OS is changed, customized configurations, such as DNS and hostname of the original OS will be reset and require reconfiguration.</li><li id="EN-US_TOPIC_0031523135__li153642091262">An OS change takes about 1 to 4 minutes to complete. During this process, the <span id="EN-US_TOPIC_0031523135__text84597433244">ECS</span> is in <strong id="EN-US_TOPIC_0031523135__b1965965515210">Changing OS</strong> state.</li><li id="EN-US_TOPIC_0031523135__li439952411274">After the OS is changed, the password for logging in to the ECS is reset. To retrieve the password, perform the following operations:<ul id="EN-US_TOPIC_0031523135__ul1739982472717"><li id="EN-US_TOPIC_0031523135__li1939952412713">For a Linux ECS, log in to it using the key and set a new password. For instructions about how to log in to an ECS using a key pair, see <a href="en-us_topic_0017955380.html">Logging In to a Linux ECS Using an SSH Key Pair</a>.</li><li id="EN-US_TOPIC_0031523135__li73991224142715">For a Windows ECS, retrieve the password by following the instructions provided in <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</li></ul>
</li></ul>
<ul id="EN-US_TOPIC_0031523135__ul18707673284"><li id="EN-US_TOPIC_0031523135__li10954135083316">The system disk capacity of an <span id="EN-US_TOPIC_0031523135__text109953488248">ECS</span> with OS changed may change because the system disk capacity specified by the image of the changed OS may be changed.</li><li id="EN-US_TOPIC_0031523135__li14700191710294">You can choose to encrypt the system disk of an ECS during OS change.</li></ul>
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@ -21,16 +21,16 @@
</li><li id="EN-US_TOPIC_0031523135__li19425937143519">If you plan to use a private image to change the OS, ensure that a private image is available. For details about how to create a private image, see <em id="EN-US_TOPIC_0031523135__i15778323185610">Image Management Service User Guide</em>.<ul id="EN-US_TOPIC_0031523135__ul16160101111503"><li id="EN-US_TOPIC_0031523135__li112128495415">If the image of a specified <span id="EN-US_TOPIC_0031523135__text98820428488">ECS</span> is required, make sure that a private image has been created using this <span id="EN-US_TOPIC_0031523135__text9883742124815">ECS</span>.</li><li id="EN-US_TOPIC_0031523135__li19120046204513">If a local image file is required, make sure that the image file has been imported to the cloud platform and registered as a private image.</li><li id="EN-US_TOPIC_0031523135__li1838258174613">If a private image from another region is required, make sure that the image has been copied.</li><li id="EN-US_TOPIC_0031523135__li19484544194814">If a private image from another user account is required, make sure that the image has been shared with you.</li></ul>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0031523135__section208284422018"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0031523135__ol6031768220119"><li id="EN-US_TOPIC_0031523135__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0031523135__li464234814566">Click <span><img id="EN-US_TOPIC_0031523135__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628"><a name="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628"></a><a name="en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628"></a>Under <strong id="EN-US_TOPIC_0031523135__b1141110207575"><span id="EN-US_TOPIC_0031523135__text12411120185711">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0031523135__b34115201573">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031523135__li162972813478">Locate the row containing the target <span id="EN-US_TOPIC_0031523135__text85429311777">ECS</span> and choose <strong id="EN-US_TOPIC_0031523135__b654243115717">More</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b554317314716">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b20543133111716">Change OS</strong> in the <strong id="EN-US_TOPIC_0031523135__b354317311376">Operation</strong> column.<p id="EN-US_TOPIC_0031523135__p230152844712">Only stopped <span id="EN-US_TOPIC_0031523135__text1811919337108">ECS</span>s support OS change. If the <span id="EN-US_TOPIC_0031523135__text1077050206">ECS</span> is not stopped, stop it before proceeding with changing.</p>
<div class="section" id="EN-US_TOPIC_0031523135__section208284422018"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0031523135__ol6031768220119"><li id="EN-US_TOPIC_0031523135__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0031523135__li464234814566">Click <span><img id="EN-US_TOPIC_0031523135__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628"><a name="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628"></a><a name="en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628"></a>Under <strong id="EN-US_TOPIC_0031523135__b1141110207575"><span id="EN-US_TOPIC_0031523135__text12411120185711">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0031523135__b34115201573">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031523135__li162972813478">Locate the row containing the target <span id="EN-US_TOPIC_0031523135__text85429311777">ECS</span> and choose <strong id="EN-US_TOPIC_0031523135__b654243115717">More</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b554317314716">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b20543133111716">Change OS</strong> in the <strong id="EN-US_TOPIC_0031523135__b354317311376">Operation</strong> column.<p id="EN-US_TOPIC_0031523135__p230152844712">Only stopped <span id="EN-US_TOPIC_0031523135__text1811919337108">ECS</span>s support OS change. If the <span id="EN-US_TOPIC_0031523135__text129863299">ECS</span> is not stopped, stop it before proceeding with changing.</p>
</li><li id="EN-US_TOPIC_0031523135__li359341520111">Select the target image.<p id="EN-US_TOPIC_0031523135__p4891784120112"><a name="EN-US_TOPIC_0031523135__li359341520111"></a><a name="li359341520111"></a>For details, see <a href="en-us_topic_0021831611.html">Creating an ECS</a>.</p>
<div class="fignone" id="EN-US_TOPIC_0031523135__fig61751138286"><span class="figcap"><b>Figure 1 </b>Changing an OS</span><br><span><img id="EN-US_TOPIC_0031523135__image1017617388811" src="en-us_image_0000001658474496.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0031523135__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0031523135__b1408122218304">Encryption</strong> option to encrypt the system disk during OS change.<p id="EN-US_TOPIC_0031523135__p767712438280">To enable encryption, click <span class="uicontrol" id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_uicontrol528614138616"><b>Create Xrole</b></span> to assign KMS access permissions to EVS. If you have rights granting permissions, assign the KMS access permissions to EVS. If you do not have the required permissions, contact the user who has the Security Administrator permissions to assign the KMS access permissions. For details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a></p>
</li><li id="EN-US_TOPIC_0031523135__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0031523135__b1408122218304">Encryption</strong> option to encrypt the system disk during OS change.<p id="EN-US_TOPIC_0031523135__p767712438280">To enable encryption, click <span class="uicontrol" id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_uicontrol528614138616"><b>Create Xrole</b></span> to grant KMS access permissions to EVS. If you have the granting permission, grant KMS access permissions to EVS. If you do not have the granting permission, contact the user who has the Security Administrator permissions to grant KMS access permissions. For details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a></p>
<p id="EN-US_TOPIC_0031523135__en-us_topic_0144542112_p228631310615">Encryption parameters are as follows:</p>
<ul id="EN-US_TOPIC_0031523135__en-us_topic_0144542112_ul202865131169"><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li14286813962"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b84235270618740">Encryption</strong>: indicates that the EVS disk has been encrypted.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li182868131664"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b8423527061882">Create Xrole</strong>: assigns KMS access permissions to EVS to obtain KMS keys. After the permissions are assigned, follow-up operations do not require assigning permissions again.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li5286191313611"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b144241223203814">Xrole Name</strong>: set to <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b443821453912">EVSAccessKMS</strong>, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li152868131619"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b959511561916">KMS Key Name</strong>: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b2406645144311">Create KMS Key</strong> and create a new one on the KMS console. The default value is <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b626615844413">evs/default</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li528671319610"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b842352706155046">KMS Key ID</strong>: specifies the ID of the key used by the encrypted data disk.</li></ul>
<ul id="EN-US_TOPIC_0031523135__en-us_topic_0144542112_ul202865131169"><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li14286813962"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b84235270618740">Encryption</strong>: indicates that the EVS disk has been encrypted.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li182868131664"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b22661759591">Create Xrole</strong>: assigns KMS access permissions to EVS to obtain KMS keys. After the permissions are assigned, follow-up operations do not require assigning permissions again.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li5286191313611"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b195081923101418">Xrole Name</strong>: set to <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b115096237146">EVSAccessKMS</strong>, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li152868131619"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b959511561916">KMS Key Name</strong>: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b2406645144311">Create KMS Key</strong> and create a new one on the KMS console. The default value is <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b626615844413">evs/default</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li528671319610"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b842352706155046">KMS Key ID</strong>: specifies the ID of the key used by the encrypted data disk.</li></ul>
</li><li id="EN-US_TOPIC_0031523135__li17273849113530">(Optional) Select a <strong id="EN-US_TOPIC_0031523135__b84235270615319">License Type</strong> (<strong id="EN-US_TOPIC_0031523135__b842352706153129">Use license from the system</strong> or <strong id="EN-US_TOPIC_0031523135__b842352706153134">Bring your own license (BYOL)</strong>) if the changed OS running on your ECS is billed. For more details, see <a href="en-us_topic_0046566932.html">License Types</a>.<div class="p" id="EN-US_TOPIC_0031523135__p57004530113530">The following OSs are billed:<ul id="EN-US_TOPIC_0031523135__ul43278730113530"><li id="EN-US_TOPIC_0031523135__en-us_topic_0046566932_li2586589022251">SUSE Linux Enterprise Server</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0046566932_li6521605722253">Oracle Enterprise Linux</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0046566932_li37000181205155">Red Hat Enterprise Linux</li></ul>
</div>
</li><li id="EN-US_TOPIC_0031523135__li5336143212240">Configure the login mode.<p id="EN-US_TOPIC_0031523135__p1154194111115"><a name="EN-US_TOPIC_0031523135__li5336143212240"></a><a name="li5336143212240"></a>If the target <span id="EN-US_TOPIC_0031523135__text1916311471252">ECS</span> uses key pair authentication, you can replace the original key pair.</p>
</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li4798821517833">Click <strong id="EN-US_TOPIC_0031523135__b153798544917">OK</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"><a name="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a><a name="en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a>In the <strong id="EN-US_TOPIC_0031523135__b844011524583">Change ECS OS</strong> dialog box, confirm the specifications, and click <strong id="EN-US_TOPIC_0031523135__b5441145214588">Submit</strong>.<p id="EN-US_TOPIC_0031523135__p4013850816820">After the application is submitted, the status <strong id="EN-US_TOPIC_0031523135__b84235270616717">Changing OS</strong> is displayed. When this status disappears, the OS change is complete.</p>
</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li4798821517833">Click <strong id="EN-US_TOPIC_0031523135__b153798544917">OK</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"><a name="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a><a name="en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a>In the <strong id="EN-US_TOPIC_0031523135__b844011524583">Change ECS OS</strong> dialog box, confirm the specifications, and click <strong id="EN-US_TOPIC_0031523135__b5441145214588">Submit</strong>.<p id="EN-US_TOPIC_0031523135__p4013850816820">After the application is submitted, the ECS status changes to <strong id="EN-US_TOPIC_0031523135__b84235270616717">Changing OS</strong>. When this status disappears, the OS change is complete.</p>
<div class="note" id="EN-US_TOPIC_0031523135__note1993244016842"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0031523135__p3492635716815">During the OS change process, a temporary <span id="EN-US_TOPIC_0031523135__text26231188142">ECS</span> is created. After the OS change is complete, this <span id="EN-US_TOPIC_0031523135__text1418210226147">ECS</span> will be automatically deleted.</p>
</div></div>
</li></ol>

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</div>
<div class="section" id="EN-US_TOPIC_0031736846__en-us_topic_0031703610_section32757467113923"><h4 class="sectiontitle">Solution</h4><ul id="EN-US_TOPIC_0031736846__ul62864375171136"><li id="EN-US_TOPIC_0031736846__li10641948171136">If the issue is a result of cause 1, proceed as follows:<p id="EN-US_TOPIC_0031736846__p16909377145119"><a name="EN-US_TOPIC_0031736846__li10641948171136"></a><a name="li10641948171136"></a>If a private image is created without Cloudbase-Init installed, the <span id="EN-US_TOPIC_0031736846__text19860445238">ECS</span> configuration cannot be customized. As a result, you can log in to the <span id="EN-US_TOPIC_0031736846__text201881453191910">ECS</span> only using the original image password.</p>
<p id="EN-US_TOPIC_0031736846__p46020234261">The original image password is the OS password configured when the private image was created.</p>
</li><li id="EN-US_TOPIC_0031736846__li15564696171147">If the issue is a result of cause 2, proceed as follows:<ol id="EN-US_TOPIC_0031736846__ol46859259171911"><li id="EN-US_TOPIC_0031736846__li40959995171921">Locate the row containing the target <span id="EN-US_TOPIC_0031736846__text5204749932">ECS</span>, click <strong id="EN-US_TOPIC_0031736846__b88081742142010">More</strong> in the <strong id="EN-US_TOPIC_0031736846__b1760113455207">Operation</strong> column, and select <strong id="EN-US_TOPIC_0031736846__b888318494203">Restart</strong>.</li><li id="EN-US_TOPIC_0031736846__li1838866171911">Click <strong id="EN-US_TOPIC_0031736846__b842352706223549">More</strong> in the <strong id="EN-US_TOPIC_0031736846__b697720573213037">Operation</strong> column and select <strong id="EN-US_TOPIC_0031736846__b842352706223554">Get Password</strong> to check whether the password can be obtained.<ul id="EN-US_TOPIC_0031736846__ul47236236172129"><li id="EN-US_TOPIC_0031736846__li43665397172129">If you can obtain the password, no further action is required.</li><li id="EN-US_TOPIC_0031736846__li57444253172129">If you cannot obtain the password, contact customer service.</li></ul>
</li><li id="EN-US_TOPIC_0031736846__li15564696171147">If the issue is a result of cause 2, proceed as follows:<ol id="EN-US_TOPIC_0031736846__ol46859259171911"><li id="EN-US_TOPIC_0031736846__li40959995171921">Locate the row containing the target <span id="EN-US_TOPIC_0031736846__text5204749932">ECS</span>, click <strong id="EN-US_TOPIC_0031736846__b88081742142010">More</strong> in the <strong id="EN-US_TOPIC_0031736846__b1760113455207">Operation</strong> column, and select <strong id="EN-US_TOPIC_0031736846__b888318494203">Restart</strong>.</li><li id="EN-US_TOPIC_0031736846__li1838866171911">After the reset, click <strong id="EN-US_TOPIC_0031736846__b842352706223549">More</strong> in the <strong id="EN-US_TOPIC_0031736846__b697720573213037">Operation</strong> column and choose <strong id="EN-US_TOPIC_0031736846__b842352706223554">Get Password</strong> to check whether the password can be obtained.<ul id="EN-US_TOPIC_0031736846__ul47236236172129"><li id="EN-US_TOPIC_0031736846__li43665397172129">If you can obtain the password, no further action is required.</li><li id="EN-US_TOPIC_0031736846__li57444253172129">If you cannot obtain the password, contact customer service.</li></ul>
</li></ol>
</li></ul>
</div>

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@ -71,7 +71,7 @@ echo "Hello, the time is now $(date -R)" | tee /root/output.txt</pre>
<p id="EN-US_TOPIC_0032380449__p316665544119">After the <span id="EN-US_TOPIC_0032380449__text1654745284317">ECS</span> is created, start it and run the <strong id="EN-US_TOPIC_0032380449__b741518589424">cat </strong><em id="EN-US_TOPIC_0032380449__i39973094314">[file]</em> command to check the script execution result.</p>
<pre class="screen" id="EN-US_TOPIC_0032380449__screen353671394316">[root@XXXXXXXX ~]# cat /root/output.txt
Hello, the time is now Mon, 16 Jul 2016 16:03:18+0800</pre>
<p id="EN-US_TOPIC_0032380449__p1849372719381"><strong id="EN-US_TOPIC_0032380449__b1069379810">Example 2: Inject a Cloud-Config data script.</strong></p>
<p id="EN-US_TOPIC_0032380449__p1849372719381"><strong id="EN-US_TOPIC_0032380449__b1225122084">Example 2: Inject a Cloud-Config data script.</strong></p>
<p id="EN-US_TOPIC_0032380449__p104921296416">When creating an <span id="EN-US_TOPIC_0032380449__text231733611919">ECS</span>, set <strong id="EN-US_TOPIC_0032380449__b83221136111911">User Data</strong> to <strong id="EN-US_TOPIC_0032380449__b632319362193">As text</strong> and enter the customized user data script.</p>
<pre class="screen" id="EN-US_TOPIC_0032380449__screen188011505456">#cloud-config
bootcmd:

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</td>
<td class="cellrowborder" valign="top" width="31.259999999999998%" headers="mcps1.3.3.3.2.4.1.2 "><p id="EN-US_TOPIC_0032398121__p20491672174818">System error. Try again later or contact customer service.</p>
</td>
<td class="cellrowborder" valign="top" width="54.769999999999996%" headers="mcps1.3.3.3.2.4.1.3 "><p id="EN-US_TOPIC_0032398121__p49212711174818">Adjust the request structure as directed in <em id="EN-US_TOPIC_0032398121__i84235269723631">Elastic Cloud Server API Reference</em>.</p>
<td class="cellrowborder" valign="top" width="54.769999999999996%" headers="mcps1.3.3.3.2.4.1.3 "><p id="EN-US_TOPIC_0032398121__p49212711174818">Adjust the request structure as instructed in <em id="EN-US_TOPIC_0032398121__i84235269723631">Elastic Cloud Server API Reference</em>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0032398121__row51965547173837"><td class="cellrowborder" valign="top" width="13.969999999999999%" headers="mcps1.3.3.3.2.4.1.1 "><p id="EN-US_TOPIC_0032398121__p39933195174818">Ecs.0010</p>

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@ -9,19 +9,19 @@
</li><li id="EN-US_TOPIC_0032980085__li890912415366"><a href="#EN-US_TOPIC_0032980085__section12553172594918">Removing an ECS from an ECS Group</a></li><li id="EN-US_TOPIC_0032980085__li262212451590"><a href="#EN-US_TOPIC_0032980085__section95601058404">Deleting an ECS Group</a></li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section1464061364114"><a name="EN-US_TOPIC_0032980085__section1464061364114"></a><a name="section1464061364114"></a><h4 class="sectiontitle">Creating an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p479295718598">Create an ECS group and associate the same policy to all group members. ECS groups are independent from each other.</p>
<ol id="EN-US_TOPIC_0032980085__ol3711135973811"><li id="EN-US_TOPIC_0032980085__li07113594388">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li16711125916384">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li19711185903813">Under <strong id="EN-US_TOPIC_0032980085__b11877121244014"><span id="EN-US_TOPIC_0032980085__text887731219406">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b58771812174010">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li971125913386">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b1877381918409">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li471116594389">On the <strong id="EN-US_TOPIC_0032980085__b15701922124014">ECS Group</strong> page, click <strong id="EN-US_TOPIC_0032980085__b127021822114017">Create ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li20711859193820">Enter the name of an ECS group.</li><li id="EN-US_TOPIC_0032980085__li371215920386">Select a policy for the ECS group.</li><li id="EN-US_TOPIC_0032980085__li57122059163815">Click <strong id="EN-US_TOPIC_0032980085__b84235270611586">OK</strong>.</li></ol>
<ol id="EN-US_TOPIC_0032980085__ol3711135973811"><li id="EN-US_TOPIC_0032980085__li07113594388">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li16711125916384">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li19711185903813">Under <strong id="EN-US_TOPIC_0032980085__b19198104111208"><span id="EN-US_TOPIC_0032980085__text1919804111208">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b9198114112201">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li971125913386">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b1877381918409">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li471116594389">On the <strong id="EN-US_TOPIC_0032980085__b15701922124014">ECS Group</strong> page, click <strong id="EN-US_TOPIC_0032980085__b127021822114017">Create ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li20711859193820">Enter the name of an ECS group.</li><li id="EN-US_TOPIC_0032980085__li371215920386">Select a policy for the ECS group.</li><li id="EN-US_TOPIC_0032980085__li57122059163815">Click <strong id="EN-US_TOPIC_0032980085__b84235270611586">OK</strong>.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section1447818554481"><a name="EN-US_TOPIC_0032980085__section1447818554481"></a><a name="section1447818554481"></a><h4 class="sectiontitle">Adding an ECS to an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p118166315312">To improve service reliability, you can add ECSs to an ECS group so that these ECSs in this group can run on different hosts.</p>
<div class="note" id="EN-US_TOPIC_0032980085__note167121625165710"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0032980085__ul1689344911229"><li id="EN-US_TOPIC_0032980085__li189314912225">After an ECS is added to an ECS group, the system reallocates a host to run this ECS to ensure that ECSs in this group are running on different hosts. When the ECS is being restarted, the startup may fail due to insufficient resources. In such a case, remove the ECS from the ECS group and try to restart the ECS again.</li><li id="EN-US_TOPIC_0032980085__li93391615992">ECSs that have local disks attached can be added to an ECS group only during the creation process. Once created, they can no longer be added to any ECS groups.</li><li id="EN-US_TOPIC_0032980085__li14180845145114">ECSs that have local disks, GPU cards, or FPGA cards attached can be added to an ECS group only during the creation process. Once created, they can no longer be added to any ECS groups.</li></ul>
</div></div>
<ol id="EN-US_TOPIC_0032980085__ol5558180115013"><li id="EN-US_TOPIC_0032980085__li0974709439">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li1795581810188">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li2558402503">Under <strong id="EN-US_TOPIC_0032980085__b1133365218447"><span id="EN-US_TOPIC_0032980085__text153321852114416">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b9333155234415">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li165586013504">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b578718346408">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li35741305503">Locate the row that contains the target ECS group and click <strong id="EN-US_TOPIC_0032980085__b942974514573">Add ECS</strong> in the <strong id="EN-US_TOPIC_0032980085__b17323547205718">Operation</strong> column.</li><li id="EN-US_TOPIC_0032980085__li13574160155011">On the <strong id="EN-US_TOPIC_0032980085__b11741195413576">Add ECS</strong> page, select an ECS to be added.</li><li id="EN-US_TOPIC_0032980085__li45746018500">Click <strong id="EN-US_TOPIC_0032980085__b13492221205812">OK</strong>. The ECS is added to the ECS group.</li></ol>
<ol id="EN-US_TOPIC_0032980085__ol5558180115013"><li id="EN-US_TOPIC_0032980085__li0974709439">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li1795581810188">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121_1" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li2558402503">Under <strong id="EN-US_TOPIC_0032980085__b2268193210414"><span id="EN-US_TOPIC_0032980085__text12671932154112">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b6268032154110">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li165586013504">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b578718346408">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li35741305503">Locate the row that contains the target ECS group and click <strong id="EN-US_TOPIC_0032980085__b942974514573">Add ECS</strong> in the <strong id="EN-US_TOPIC_0032980085__b17323547205718">Operation</strong> column.</li><li id="EN-US_TOPIC_0032980085__li13574160155011">On the <strong id="EN-US_TOPIC_0032980085__b11741195413576">Add ECS</strong> page, select an ECS to be added.</li><li id="EN-US_TOPIC_0032980085__li45746018500">Click <strong id="EN-US_TOPIC_0032980085__b13492221205812">OK</strong>. The ECS is added to the ECS group.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section12553172594918"><a name="EN-US_TOPIC_0032980085__section12553172594918"></a><a name="section12553172594918"></a><h4 class="sectiontitle">Removing an ECS from an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p12584124558">After an ECS is removed from an ECS group, the ECS does not comply with the ECS group policy anymore.</p>
<ol id="EN-US_TOPIC_0032980085__ol5435141535317"><li id="EN-US_TOPIC_0032980085__li31906794311">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li188094225182">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121_2" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li3435315185314">Under <strong id="EN-US_TOPIC_0032980085__b1592121464814"><span id="EN-US_TOPIC_0032980085__text11924144483">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b129371417484">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li124358151534">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b1412053914011">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li043519155531">Expand the ECS group information and view the ECSs in the ECS group.</li><li id="EN-US_TOPIC_0032980085__li4717194710430">Locate the ECS to be removed and click <strong id="EN-US_TOPIC_0032980085__b20705455125917">Remove</strong> in the <strong id="EN-US_TOPIC_0032980085__b89211132204">Operation</strong> column.</li><li id="EN-US_TOPIC_0032980085__li11165519144416">In the displayed dialog box, click <strong id="EN-US_TOPIC_0032980085__b13221810113119">Yes</strong>.<p id="EN-US_TOPIC_0032980085__p12164020104412">The ECS is removed from the ECS group.</p>
<ol id="EN-US_TOPIC_0032980085__ol5435141535317"><li id="EN-US_TOPIC_0032980085__li31906794311">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li188094225182">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121_2" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li3435315185314">Under <strong id="EN-US_TOPIC_0032980085__b591543419411"><span id="EN-US_TOPIC_0032980085__text1591543410419">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b59161534194118">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li124358151534">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b1412053914011">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li043519155531">Expand the ECS group information and view the ECSs in the ECS group.</li><li id="EN-US_TOPIC_0032980085__li4717194710430">Locate the ECS to be removed and click <strong id="EN-US_TOPIC_0032980085__b20705455125917">Remove</strong> in the <strong id="EN-US_TOPIC_0032980085__b89211132204">Operation</strong> column.</li><li id="EN-US_TOPIC_0032980085__li11165519144416">In the displayed dialog box, click <strong id="EN-US_TOPIC_0032980085__b713514385416">Yes</strong>.<p id="EN-US_TOPIC_0032980085__p12164020104412">The ECS is removed from the ECS group.</p>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section95601058404"><a name="EN-US_TOPIC_0032980085__section95601058404"></a><a name="section95601058404"></a><h4 class="sectiontitle">Deleting an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p85851295405">After an ECS group is deleted, the policy does not apply to the ECSs in the ECS group anymore.</p>
<ol id="EN-US_TOPIC_0032980085__ol21954523579"><li id="EN-US_TOPIC_0032980085__li1150461414311">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li19210826101818">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121_3" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li121951527571">Under <strong id="EN-US_TOPIC_0032980085__b643492317481"><span id="EN-US_TOPIC_0032980085__text12434162324813">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b1143412231486">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li1619575214579">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b5934154216405">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li16195452115713">Locate the ECS group to be deleted and click <strong id="EN-US_TOPIC_0032980085__b4971154618218">Delete</strong> in the <strong id="EN-US_TOPIC_0032980085__b119711446721">Operation</strong> column.</li><li id="EN-US_TOPIC_0032980085__li219519527573">In the displayed dialog box, click <strong id="EN-US_TOPIC_0032980085__b1269143610169">Yes</strong>.</li></ol>
<ol id="EN-US_TOPIC_0032980085__ol21954523579"><li id="EN-US_TOPIC_0032980085__li1150461414311">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li19210826101818">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0014250631_image1862675853202121_3" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0032980085__li121951527571">Under <strong id="EN-US_TOPIC_0032980085__b1775215508432"><span id="EN-US_TOPIC_0032980085__text67521750114311">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0032980085__b1675355004317">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li1619575214579">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b5934154216405">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li16195452115713">Locate the ECS group to be deleted and click <strong id="EN-US_TOPIC_0032980085__b4971154618218">Delete</strong> in the <strong id="EN-US_TOPIC_0032980085__b119711446721">Operation</strong> column.</li><li id="EN-US_TOPIC_0032980085__li219519527573">In the displayed dialog box, click <strong id="EN-US_TOPIC_0032980085__b112331153184313">Yes</strong>.</li></ol>
</div>
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<a name="EN-US_TOPIC_0035643949"></a><a name="EN-US_TOPIC_0035643949"></a>
<h1 class="topictitle1">Application Scenarios for Using Passwords</h1>
<div id="body1471318453926"><p id="EN-US_TOPIC_0035643949__p16317112732013">The password for logging in to your <span id="EN-US_TOPIC_0035643949__text150561713475">ECS</span> is important and please keep it secure. You can reset the password if it is forgotten or expires.</p>
<div id="body1471318453926"><p id="EN-US_TOPIC_0035643949__p1561011421292">Passwords are used to log in to <span id="EN-US_TOPIC_0035643949__text11609816101418">ECS</span>s. If you select the password login mode when creating an ECS, you can use the username and password to log in to your <span id="EN-US_TOPIC_0035643949__text1321920265465">ECS</span>. The password is very important. Keep it secure.</p>
<p id="EN-US_TOPIC_0035643949__p5288658141316">You can reset the password when:</p>
<ul id="EN-US_TOPIC_0035643949__ul172215368302"><li id="EN-US_TOPIC_0035643949__li126401401307">You forgot the password.</li><li id="EN-US_TOPIC_0035643949__li52213610302">The password has expired.</li><li id="EN-US_TOPIC_0035643949__li179001047173011">You selected <strong id="EN-US_TOPIC_0035643949__b58856435481">Set password later</strong> during the ECS creation.</li></ul>
<p id="EN-US_TOPIC_0035643949__p5508145512462"><a href="#EN-US_TOPIC_0035643949__table15251728124719">Table 1</a> provides guidance on how to reset your password in different scenarios.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0035643949__table15251728124719"></a><a name="table15251728124719"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035643949__table15251728124719" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Resetting a password</caption><thead align="left"><tr id="EN-US_TOPIC_0035643949__row125217281474"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.3.1.1"><p id="EN-US_TOPIC_0035643949__p32521328104716">Reference</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0035643949__table15251728124719"></a><a name="table15251728124719"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035643949__table15251728124719" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Resetting a password</caption><thead align="left"><tr id="EN-US_TOPIC_0035643949__row125217281474"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.5.2.3.1.1"><p id="EN-US_TOPIC_0035643949__p32521328104716">Scenario</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.3.1.2"><p id="EN-US_TOPIC_0035643949__p4252728124711">Prerequisites</p>
<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.5.2.3.1.2"><p id="EN-US_TOPIC_0035643949__p4252728124711">Prerequisites</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0035643949__row1569143113578"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__p06953111577"><a href="en-us_topic_0122627689.html">Resetting the Password for Logging In to an ECS in the OS</a></p>
<tbody><tr id="EN-US_TOPIC_0035643949__row1569143113578"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.5.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__p06953111577"><a href="en-us_topic_0122627689.html">Resetting the Password for Logging In to an ECS in the OS</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0035643949__p1469173117577">N/A</p>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.5.2.3.1.2 "><p id="EN-US_TOPIC_0035643949__p1469173117577">N/A</p>
<div class="note" id="EN-US_TOPIC_0035643949__note121971770496"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0035643949__p919715720496">The reference is for Windows or Linux ECSs.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0035643949__row17252528164719"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__p162521428144711"><a href="en-us_topic_0021426802.html">Resetting the Password for Logging In to a Windows ECS</a></p>
<tr id="EN-US_TOPIC_0035643949__row17252528164719"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.5.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__p162521428144711"><a href="en-us_topic_0021426802.html">Resetting the Password for Logging In to a Windows ECS</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0035643949__p11252172864710">The password reset plug-in has not been installed.</p>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.5.2.3.1.2 "><p id="EN-US_TOPIC_0035643949__p11252172864710">The password reset plug-in has not been installed.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035643949__row122524283473"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__p1325262884715"><a href="en-us_topic_0021427650.html">Resetting the Password for Logging In to a Linux ECS</a></p>
<tr id="EN-US_TOPIC_0035643949__row122524283473"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.5.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__p1325262884715"><a href="en-us_topic_0021427650.html">Resetting the Password for Logging In to a Linux ECS</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0035643949__p1468216387506">The password reset plug-in has not been installed.</p>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.5.2.3.1.2 "><p id="EN-US_TOPIC_0035643949__p1468216387506">The password reset plug-in has not been installed.</p>
</td>
</tr>
</tbody>
@ -32,15 +34,15 @@
</div>
<div class="section" id="EN-US_TOPIC_0035643949__section1655373011248"><h4 class="sectiontitle">Background</h4><p id="EN-US_TOPIC_0035643949__p9315362510"><a href="#EN-US_TOPIC_0035643949__en-us_topic_0021426802_table4381109318958">Table 2</a> shows the <span id="EN-US_TOPIC_0035643949__text67861814114710">ECS</span> password complexity requirements.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0035643949__en-us_topic_0021426802_table4381109318958"></a><a name="en-us_topic_0021426802_table4381109318958"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035643949__en-us_topic_0021426802_table4381109318958" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Password complexity requirements</caption><thead align="left"><tr id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_row925712618958"><th align="left" class="cellrowborder" valign="top" width="23.400000000000002%" id="mcps1.3.4.3.2.3.1.1"><p id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_p1162970218958">Parameter</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0035643949__en-us_topic_0021426802_table4381109318958"></a><a name="en-us_topic_0021426802_table4381109318958"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035643949__en-us_topic_0021426802_table4381109318958" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Password complexity requirements</caption><thead align="left"><tr id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_row925712618958"><th align="left" class="cellrowborder" valign="top" width="23.400000000000002%" id="mcps1.3.6.3.2.3.1.1"><p id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_p1162970218958">Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="76.6%" id="mcps1.3.4.3.2.3.1.2"><p id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_p248177818958">Requirement</p>
<th align="left" class="cellrowborder" valign="top" width="76.6%" id="mcps1.3.6.3.2.3.1.2"><p id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_p248177818958">Requirement</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_row4260571318958"><td class="cellrowborder" valign="top" width="23.400000000000002%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_p2851073918958">Password</p>
<tbody><tr id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_row4260571318958"><td class="cellrowborder" valign="top" width="23.400000000000002%" headers="mcps1.3.6.3.2.3.1.1 "><p id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_p2851073918958">Password</p>
</td>
<td class="cellrowborder" valign="top" width="76.6%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_ul5961106018958"><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li6376657018958">Consists of 8 to 26 characters. </li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li52807732181018">Contains at least three of the following character types:<ul id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_ul24583583181022"><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li30443664181018">Uppercase letters</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li4078050181018">Lowercase letters</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li29325375181018">Digits</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_li132021431143219">Special characters: $!@%-_=+[]:./^,{}?</li></ul>
<td class="cellrowborder" valign="top" width="76.6%" headers="mcps1.3.6.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_ul5961106018958"><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li6376657018958">Consists of 8 to 26 characters. </li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li52807732181018">Contains at least three of the following character types:<ul id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_ul24583583181022"><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li30443664181018">Uppercase letters</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li4078050181018">Lowercase letters</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li29325375181018">Digits</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_li132021431143219">Special characters: $!@%-_=+[]:./^,{}?</li></ul>
</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li38450401173547">Cannot contain the username or the username spelled backwards.</li><li id="EN-US_TOPIC_0035643949__en-us_topic_0067909751_en-us_topic_0021426802_li531840181018">Cannot contain more than two consecutive characters in the same sequence as they appear in the username. (This requirement applies only to Windows <span id="EN-US_TOPIC_0035643949__text153189271104">ECS</span>s.)</li></ul>
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<div class="section" id="EN-US_TOPIC_0036068717__section50053646171330"><h4 class="sectiontitle">Possible Causes</h4><p id="EN-US_TOPIC_0036068717__p38116016171335">The NIC driver has not been correctly installed.</p>
</div>
<div class="section" id="EN-US_TOPIC_0036068717__section38560614171337"><h4 class="sectiontitle">Solution</h4><p id="EN-US_TOPIC_0036068717__p6175026194024">Disk-intensive and large-memory ECSs use passthrough NICs to improve network performance. You must install the passthrough NIC driver on the ECSs or the image that is used for creating the ECSs.</p>
<div class="note" id="EN-US_TOPIC_0036068717__note13717883194024"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0036068717__p4717571414506">If you mount the CD/DVD-ROM driver over a VPN, ensure that the VPN bandwidth is greater than 8 Mbit/s.</p>
<div class="section" id="EN-US_TOPIC_0036068717__section38560614171337"><h4 class="sectiontitle">Solution</h4><p id="EN-US_TOPIC_0036068717__p58364039171536">Disk-intensive and large-memory ECSs use passthrough network interfaces to improve network performance. You must install the passthrough network interface driver on the <span id="EN-US_TOPIC_0036068717__text5330194084111">ECS</span>s or the image that is used for creating the ECSs.</p>
<div class="note" id="EN-US_TOPIC_0036068717__note6125745192014"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0036068717__p21259451201">If you mount the CD/DVD-ROM driver over a VPN, ensure that the VPN bandwidth is greater than 8 Mbit/s.</p>
</div></div>
<p id="EN-US_TOPIC_0036068717__p56292370154841">To install the passthrough NICE driver, do as follows:</p>
<ol id="EN-US_TOPIC_0036068717__ol10077261174432"><li id="EN-US_TOPIC_0036068717__li38329906174432"><span>Obtain the passthrough NIC driver.</span><p><p id="EN-US_TOPIC_0036068717__p33280564174432">Passthrough NIC driver versions vary depending on the OS. For details, see <a href="#EN-US_TOPIC_0036068717__table39612229174432">Table 1</a>.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0036068717__table39612229174432"></a><a name="table39612229174432"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0036068717__table39612229174432" frame="border" border="1" rules="all"><caption><b>Table 1 </b>NIC driver versions and OSs</caption><thead align="left"><tr id="EN-US_TOPIC_0036068717__row4221119174432"><th align="left" class="cellrowborder" valign="top" width="21.68%" id="mcps1.3.3.5.1.2.2.2.4.1.1"><p id="EN-US_TOPIC_0036068717__p35195222174432">NIC Driver Version</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0036068717__table39612229174432"></a><a name="table39612229174432"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0036068717__table39612229174432" frame="border" border="1" rules="all"><caption><b>Table 1 </b>NIC driver versions and OSs</caption><thead align="left"><tr id="EN-US_TOPIC_0036068717__row4221119174432"><th align="left" class="cellrowborder" valign="top" width="21.68%" id="mcps1.3.3.4.1.2.2.2.4.1.1"><p id="EN-US_TOPIC_0036068717__p35195222174432">NIC Driver Version</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="44.24%" id="mcps1.3.3.5.1.2.2.2.4.1.2"><p id="EN-US_TOPIC_0036068717__p32240719174432">OS</p>
<th align="left" class="cellrowborder" valign="top" width="44.24%" id="mcps1.3.3.4.1.2.2.2.4.1.2"><p id="EN-US_TOPIC_0036068717__p32240719174432">OS</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="34.08%" id="mcps1.3.3.5.1.2.2.2.4.1.3"><p id="EN-US_TOPIC_0036068717__p61361445174432">How to Obtain</p>
<th align="left" class="cellrowborder" valign="top" width="34.08%" id="mcps1.3.3.4.1.2.2.2.4.1.3"><p id="EN-US_TOPIC_0036068717__p61361445174432">How to Obtain</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0036068717__row40188444174432"><td class="cellrowborder" rowspan="2" valign="top" width="21.68%" headers="mcps1.3.3.5.1.2.2.2.4.1.1 "><p id="EN-US_TOPIC_0036068717__p6366341174432">ixgbevf 2.16.4</p>
<tbody><tr id="EN-US_TOPIC_0036068717__row40188444174432"><td class="cellrowborder" rowspan="2" valign="top" width="21.68%" headers="mcps1.3.3.4.1.2.2.2.4.1.1 "><p id="EN-US_TOPIC_0036068717__p6366341174432">ixgbevf 2.16.4</p>
</td>
<td class="cellrowborder" valign="top" width="44.24%" headers="mcps1.3.3.5.1.2.2.2.4.1.2 "><p id="EN-US_TOPIC_0036068717__p45911649174432">CentOS 7.2 64bit</p>
<td class="cellrowborder" valign="top" width="44.24%" headers="mcps1.3.3.4.1.2.2.2.4.1.2 "><p id="EN-US_TOPIC_0036068717__p45911649174432">CentOS 7.2 64bit</p>
</td>
<td class="cellrowborder" rowspan="2" valign="top" width="34.08%" headers="mcps1.3.3.5.1.2.2.2.4.1.3 "><p id="EN-US_TOPIC_0036068717__p49377918174432"><a href="https://sourceforge.net/projects/e1000/files/ixgbevf stable/2.16.4/" target="_blank" rel="noopener noreferrer">https://sourceforge.net/projects/e1000/files/ixgbevf%20stable/2.16.4/</a></p>
<td class="cellrowborder" rowspan="2" valign="top" width="34.08%" headers="mcps1.3.3.4.1.2.2.2.4.1.3 "><p id="EN-US_TOPIC_0036068717__p49377918174432"><a href="https://sourceforge.net/projects/e1000/files/ixgbevf stable/2.16.4/" target="_blank" rel="noopener noreferrer">https://sourceforge.net/projects/e1000/files/ixgbevf%20stable/2.16.4/</a></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0036068717__row37911098174432"><td class="cellrowborder" valign="top" headers="mcps1.3.3.5.1.2.2.2.4.1.1 "><p id="EN-US_TOPIC_0036068717__p26151677174432">Red Hat Enterprise Linux 7.2 64bit</p>
<tr id="EN-US_TOPIC_0036068717__row37911098174432"><td class="cellrowborder" valign="top" headers="mcps1.3.3.4.1.2.2.2.4.1.1 "><p id="EN-US_TOPIC_0036068717__p26151677174432">Red Hat Enterprise Linux 7.2 64bit</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0036068717__row34222271174432"><td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.3.5.1.2.2.2.4.1.1 "><p id="EN-US_TOPIC_0036068717__p5655568174432">ixgbevf 2.16.1</p>
<tr id="EN-US_TOPIC_0036068717__row34222271174432"><td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.3.4.1.2.2.2.4.1.1 "><p id="EN-US_TOPIC_0036068717__p5655568174432">ixgbevf 2.16.1</p>
</td>
<td class="cellrowborder" valign="top" width="44.24%" headers="mcps1.3.3.5.1.2.2.2.4.1.2 "><p id="EN-US_TOPIC_0036068717__p55447863174432">SUSE Linux Enterprise Server 11 SP3 64bit</p>
<td class="cellrowborder" valign="top" width="44.24%" headers="mcps1.3.3.4.1.2.2.2.4.1.2 "><p id="EN-US_TOPIC_0036068717__p55447863174432">SUSE Linux Enterprise Server 11 SP3 64bit</p>
<p id="EN-US_TOPIC_0036068717__p29268722174432">SUSE Linux Enterprise Server 11 SP4 64bit</p>
</td>
<td class="cellrowborder" valign="top" width="34.08%" headers="mcps1.3.3.5.1.2.2.2.4.1.3 "><p id="EN-US_TOPIC_0036068717__p63388838174432"><a href="https://sourceforge.net/projects/e1000/files/ixgbevf stable/2.16.1/" target="_blank" rel="noopener noreferrer">https://sourceforge.net/projects/e1000/files/ixgbevf%20stable/2.16.1/</a></p>
<td class="cellrowborder" valign="top" width="34.08%" headers="mcps1.3.3.4.1.2.2.2.4.1.3 "><p id="EN-US_TOPIC_0036068717__p63388838174432"><a href="https://sourceforge.net/projects/e1000/files/ixgbevf stable/2.16.1/" target="_blank" rel="noopener noreferrer">https://sourceforge.net/projects/e1000/files/ixgbevf%20stable/2.16.1/</a></p>
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<div class="section" id="EN-US_TOPIC_0037470901__section712673201458"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0037470901__ol6481771814279"><li id="EN-US_TOPIC_0037470901__li29205763161240"><a name="EN-US_TOPIC_0037470901__li29205763161240"></a><a name="li29205763161240"></a><a href="https://docs.otc.t-systems.com/usermanual/evs/en-us_topic_0021738346.html" target="_blank" rel="noopener noreferrer">Create an EVS disk</a> according to the volume of data to be migrated.</li><li id="EN-US_TOPIC_0037470901__li4921150217850">Attach the EVS disk created in <a href="#EN-US_TOPIC_0037470901__li29205763161240">1</a> to the disk-intensive ECS for which you want to expand the capacity.</li><li id="EN-US_TOPIC_0037470901__li2224934614279">Back up local disk data.<p id="EN-US_TOPIC_0037470901__p13138243143247"><a name="EN-US_TOPIC_0037470901__li2224934614279"></a><a name="li2224934614279"></a>Back up the data stored in the local disks to the EVS disk that is newly attached to the disk-intensive ECS.</p>
<ul id="EN-US_TOPIC_0037470901__ul1971264975817"><li id="EN-US_TOPIC_0037470901__li771244985810">For Windows <span id="EN-US_TOPIC_0037470901__text15960196205912">ECS</span>s, directly copy the data to be backed up to the EVS disk.</li><li id="EN-US_TOPIC_0037470901__li47125145912">For Linux <span id="EN-US_TOPIC_0037470901__text1754512296593">ECS</span>s, run the cp command to copy the data to be backed up to the EVS disk.</li></ul>
</li><li id="EN-US_TOPIC_0037470901__li19170660143341"><a name="EN-US_TOPIC_0037470901__li19170660143341"></a><a name="li19170660143341"></a>Detach the EVS disk from the ECS.<ol type="a" id="EN-US_TOPIC_0037470901__ol33424293151317"><li id="EN-US_TOPIC_0037470901__li9956467151317">On the <strong id="EN-US_TOPIC_0037470901__b042413511010">Elastic Cloud Server</strong> page, select this disk-intensive ECS and ensure that it has been stopped.<p id="EN-US_TOPIC_0037470901__p61684909151656">If the ECS is running, choose <strong id="EN-US_TOPIC_0037470901__b123412501516">More</strong> &gt; <strong id="EN-US_TOPIC_0037470901__b193229520111">Stop</strong> to stop the ECS.</p>
</li><li id="EN-US_TOPIC_0037470901__li19170660143341"><a name="EN-US_TOPIC_0037470901__li19170660143341"></a><a name="li19170660143341"></a>Detach the EVS disk from the ECS.<ol type="a" id="EN-US_TOPIC_0037470901__ol33424293151317"><li id="EN-US_TOPIC_0037470901__li9956467151317">On the <strong id="EN-US_TOPIC_0037470901__b197403041813">Elastic Cloud Server</strong> page, select this disk-intensive ECS and ensure that it has been stopped.<p id="EN-US_TOPIC_0037470901__p61684909151656">If the ECS is running, choose <strong id="EN-US_TOPIC_0037470901__b123412501516">More</strong> &gt; <strong id="EN-US_TOPIC_0037470901__b193229520111">Stop</strong> to stop the ECS.</p>
</li><li id="EN-US_TOPIC_0037470901__li39188633141316">Click the name of the disk-intensive ECS to go to the ECS details page.</li><li id="EN-US_TOPIC_0037470901__li18828942152032">Click the <strong id="EN-US_TOPIC_0037470901__b84235270692933">Disks</strong> tab. Locate the row containing the EVS data disk and click <strong id="EN-US_TOPIC_0037470901__b842352706102711">Detach</strong> to detach the disk from the ECS.</li></ol>
</li><li id="EN-US_TOPIC_0037470901__li5892076615240"><a name="EN-US_TOPIC_0037470901__li5892076615240"></a><a name="li5892076615240"></a>Prepare a new disk-intensive ECS with higher specifications and larger capacity than the original one.<p id="EN-US_TOPIC_0037470901__p1097495615241"><a name="EN-US_TOPIC_0037470901__li5892076615240"></a><a name="li5892076615240"></a>Ensure that the local disk capacity can meet your requirements. </p>
</li><li id="EN-US_TOPIC_0037470901__li14785235152753">Attach the EVS disk to the new disk-intensive ECS.<p id="EN-US_TOPIC_0037470901__p11874075171732"><a name="EN-US_TOPIC_0037470901__li14785235152753"></a><a name="li14785235152753"></a>On the <strong id="EN-US_TOPIC_0037470901__b136421452787">Elastic Cloud Server</strong> page, click the name of the ECS described in step <a href="#EN-US_TOPIC_0037470901__li5892076615240">5</a> to view details.</p>
</li><li id="EN-US_TOPIC_0037470901__li37480066171923"><a name="EN-US_TOPIC_0037470901__li37480066171923"></a><a name="li37480066171923"></a>Click the <strong id="EN-US_TOPIC_0037470901__b3166031238574">Disks</strong> tab. Then, click <strong id="EN-US_TOPIC_0037470901__b62538178185745">Attach Disk</strong>.<p id="EN-US_TOPIC_0037470901__p36884565171924">In the displayed dialog box, select the EVS disk detached in step <a href="#EN-US_TOPIC_0037470901__li19170660143341">4</a> and the device name.</p>
</li><li id="EN-US_TOPIC_0037470901__li3579351153250">Migrate the data from the EVS disk in <a href="#EN-US_TOPIC_0037470901__li37480066171923">7</a> to the local disks of the new disk-intensive ECS.</li></ol>
</li><li id="EN-US_TOPIC_0037470901__li3579351153250">Migrate the data from the EVS disk in step <a href="#EN-US_TOPIC_0037470901__li37480066171923">7</a> to the local disks of the new disk-intensive ECS.</li></ol>
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<ul id="EN-US_TOPIC_0037633087__ul135288157246"><li id="EN-US_TOPIC_0037633087__li17528161511246">Username: <strong id="EN-US_TOPIC_0037633087__b842352706155334">Administrator</strong></li><li id="EN-US_TOPIC_0037633087__li1852841542416">RID: <strong id="EN-US_TOPIC_0037633087__b842352706155341">500</strong></li><li id="EN-US_TOPIC_0037633087__li25292015152418">LM-HASH value: <strong id="EN-US_TOPIC_0037633087__b84235270615543">C8825DB10F2590EAAAD3B435B51404EE</strong></li><li id="EN-US_TOPIC_0037633087__li11529715162411">NT-HASH value: <strong id="EN-US_TOPIC_0037633087__b842352706155426">683020925C5D8569C23AA724774CE9CC</strong></li></ul>
<p id="EN-US_TOPIC_0037633087__p66191792510">Use an image to create two ECSs, ecs01 and ecs02. Then, verify that the hash values of the <strong id="EN-US_TOPIC_0037633087__b368218992155815">cloudbase-init</strong> account for the two <span id="EN-US_TOPIC_0037633087__text6269154612212">ECS</span>s are different.</p>
<ul id="EN-US_TOPIC_0037633087__ul124872047162714"><li id="EN-US_TOPIC_0037633087__li2487747182715">LM-HASH and NTLM-HASH values of the <strong id="EN-US_TOPIC_0037633087__b12314770531604">cloudbase-init</strong> account for ecs01<div class="fignone" id="EN-US_TOPIC_0037633087__fig311825713493"><span class="figcap"><b>Figure 1 </b>ecs01</span><br><span><img id="EN-US_TOPIC_0037633087__image12215142712312" src="en-us_image_0000001828925969.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0037633087__li134871147202720">LM-HASH and NTLM-HASH values of the <strong id="EN-US_TOPIC_0037633087__b2034946006">cloudbase-init</strong> account for ecs02<div class="fignone" id="EN-US_TOPIC_0037633087__fig19275102321818"><span class="figcap"><b>Figure 2 </b>ecs02</span><br><span><img id="EN-US_TOPIC_0037633087__image1149526183216" src="en-us_image_0000001782047214.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0037633087__li134871147202720">LM-HASH and NTLM-HASH values of the <strong id="EN-US_TOPIC_0037633087__b1834097785">cloudbase-init</strong> account for ecs02<div class="fignone" id="EN-US_TOPIC_0037633087__fig19275102321818"><span class="figcap"><b>Figure 2 </b>ecs02</span><br><span><img id="EN-US_TOPIC_0037633087__image1149526183216" src="en-us_image_0000001782047214.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ul>
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<h1 class="topictitle1">Large-Memory ECSs</h1>
<div id="body1474336784369"><div class="section" id="EN-US_TOPIC_0038024694__section25374905172644"><h4 class="sectiontitle">Overview</h4><p id="EN-US_TOPIC_0038024694__p29697875172646">Large-memory ECSs provide an even larger amount of memory than memory-optimized ECSs. They are used for applications that require a large amount of memory, rapid data switching, low latency, and capability of processing large volumes of data. Large-memory ECSs provide large memory and high computing, storage, and network performance.</p>
<ul id="EN-US_TOPIC_0038024694__ul4988641132914"><li id="EN-US_TOPIC_0038024694__li49909151344">Features:<p id="EN-US_TOPIC_0038024694__p1899011157345"><a name="EN-US_TOPIC_0038024694__li49909151344"></a><a name="li49909151344"></a>The applications are for large-scale, enterprise-class, in-memory applications, process large volumes of data, and require rapid data switching, processing and low latency storage resource.</p>
<ul id="EN-US_TOPIC_0038024694__ul4988641132914"><li id="EN-US_TOPIC_0038024694__li1198964122919">Features:<p id="EN-US_TOPIC_0038024694__p4989104110296"><a name="EN-US_TOPIC_0038024694__li1198964122919"></a><a name="li1198964122919"></a>The applications are for large-scale, enterprise-class, in-memory applications, process large volumes of data, and require rapid data switching, processing and low latency storage resource.</p>
</li><li id="EN-US_TOPIC_0038024694__li199896412293">Application scenarios<p id="EN-US_TOPIC_0038024694__p789411216236"><a name="EN-US_TOPIC_0038024694__li199896412293"></a><a name="li199896412293"></a>OLTP and OLAP scenarios</p>
</li></ul>
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<a name="EN-US_TOPIC_0039588795"></a><a name="EN-US_TOPIC_0039588795"></a>
<h1 class="topictitle1">Viewing ECS Creation Statuses</h1>
<h1 class="topictitle1">Viewing the ECS Creation Status</h1>
<div id="body1475916349625"><div class="section" id="EN-US_TOPIC_0039588795__section52267161284"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0039588795__p192271016152813">After submitting the request for creating an <span id="EN-US_TOPIC_0039588795__text67111012253">ECS</span>, you can view the creation status. This section describes how to view the creation status of an <span id="EN-US_TOPIC_0039588795__text174152252512">ECS</span>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0039588795__section40936232171845"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0039588795__ol1607973117228"><li id="EN-US_TOPIC_0039588795__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0039588795__li464234814566">Click <span><img id="EN-US_TOPIC_0039588795__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0039588795__li1859019014179">Under <strong id="EN-US_TOPIC_0039588795__b1315112356312"><span id="EN-US_TOPIC_0039588795__text13151183518317">Computing</span></strong>, click <strong id="EN-US_TOPIC_0039588795__b1815216356318">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0039588795__li8248795172237">After creating an ECS, view the creation status above the ECS list beside the common operations (<strong id="EN-US_TOPIC_0039588795__b842352706224353">Start</strong>, <strong id="EN-US_TOPIC_0039588795__b842352706224359">Stop</strong>, <strong id="EN-US_TOPIC_0039588795__b842352706224412">Restart</strong>, and <strong id="EN-US_TOPIC_0039588795__b1256162714514">Delete</strong>).<div class="fignone" id="EN-US_TOPIC_0039588795__fig95001618173416"><span class="figcap"><b>Figure 1 </b>ECS creation status</span><br><span><img id="EN-US_TOPIC_0039588795__image750151803413" src="en-us_image_0000001705420301.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0039588795__li5737160017537">Click the number displayed above <strong id="EN-US_TOPIC_0039588795__b842352706193120">Creating</strong> and view task details.<div class="note" id="EN-US_TOPIC_0039588795__note757395218525"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0039588795__ul8917181844517"><li id="EN-US_TOPIC_0039588795__li124091521144514">An ECS that is being created is in one of the following states:<ul id="EN-US_TOPIC_0039588795__ul71264208715"><li id="EN-US_TOPIC_0039588795__li1412652020718"><strong id="EN-US_TOPIC_0039588795__b842352706171726">Creating</strong>: The ECS is being created.</li><li id="EN-US_TOPIC_0039588795__li62730432364"><strong id="EN-US_TOPIC_0039588795__b1076712917">Faulty</strong>: Creating the ECS failed. In such a case, the system automatically rolls back the task and displays an error code on the GUI, for example, <strong id="EN-US_TOPIC_0039588795__b216125994">Ecs.0013 Insufficient EIP quota</strong>.</li><li id="EN-US_TOPIC_0039588795__li11517121613158"><strong id="EN-US_TOPIC_0039588795__b921743255">Running</strong>: The request of creating the ECS has been processed, and the ECS is running properly. An ECS in this state can provide services for you.<p id="EN-US_TOPIC_0039588795__p15171216151514">See <a href="en-us_topic_0032398121.html">How Do I Handle Error Messages Displayed on the Management Console?</a> for troubleshooting.</p>
</li><li id="EN-US_TOPIC_0039588795__li5737160017537">Click the number displayed above <strong id="EN-US_TOPIC_0039588795__b842352706193120">Creating</strong> and view task details.<div class="note" id="EN-US_TOPIC_0039588795__note757395218525"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0039588795__ul8917181844517"><li id="EN-US_TOPIC_0039588795__li124091521144514">An ECS that is being created is in one of the following states:<ul id="EN-US_TOPIC_0039588795__ul71264208715"><li id="EN-US_TOPIC_0039588795__li1412652020718"><strong id="EN-US_TOPIC_0039588795__b842352706171726">Creating</strong>: The ECS is being created.</li><li id="EN-US_TOPIC_0039588795__li62730432364"><strong id="EN-US_TOPIC_0039588795__b337277883">Faulty</strong>: Creating the ECS failed. In such a case, the system automatically rolls back the task and displays an error code on the GUI, for example, <strong id="EN-US_TOPIC_0039588795__b273886758">Ecs.0013 Insufficient EIP quota</strong>.</li><li id="EN-US_TOPIC_0039588795__li11517121613158"><strong id="EN-US_TOPIC_0039588795__b795412751">Running</strong>: The request of creating the ECS has been processed, and the ECS is running properly. An ECS in this state can provide services for you.<p id="EN-US_TOPIC_0039588795__p15171216151514">See <a href="en-us_topic_0032398121.html">How Do I Handle Error Messages Displayed on the Management Console?</a> for troubleshooting.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0039588795__li16917201819452">If you find that the task status area shows an ECS creation failure but the ECS has been created successfully and displayed in the ECS list, see <a href="en-us_topic_0039524582.html">Why Does the Failures Area Show an ECS Creation Failure But the ECS List Displays the Created ECS?</a></li></ul>
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</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0041169567__row74463244517"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p9446122413513">2025-02-10</p>
<tbody><tr id="EN-US_TOPIC_0041169567__row141331136874"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p3133336778">2025-04-02</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p675115013918">Modified the following content:</p>
<p id="EN-US_TOPIC_0041169567__p613313367718">Added i3m.15xlarge.8 to I3m flavors in <a href="en-us_topic_0094118976.html">Ultra-high I/O ECSs</a>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row2537113224212"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p21130331424">2025-03-06</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p3113133394215">Modified the following content:</p>
<p id="EN-US_TOPIC_0041169567__p1199784793017">Added G7v ECSs in <a href="en-us_topic_0097289624.html">GPU-accelerated ECSs</a>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row74463244517"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p9446122413513">2025-02-10</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p204461224354">Modified the following content:</p>
<p id="EN-US_TOPIC_0041169567__p1171017323516"><a href="en-us_topic_0035550301.html">Memory-optimized ECSs</a>: Added m4.medium.8 to M4 flavors and m3.medium.8 to M3 flavors.</p>
<p id="EN-US_TOPIC_0041169567__p1171017323516">Added m4.medium.8 to M4 flavors and m3.medium.8 to M3 flavors in <a href="en-us_topic_0035550301.html">Memory-optimized ECSs</a>.</p>
</td>
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<tr id="EN-US_TOPIC_0041169567__row16763412163419"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p2076481213345">2025-01-06</p>
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</tr>
<tr id="EN-US_TOPIC_0041169567__row1295203313412"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p529616332343">2023-06-27</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p1329615338346">Added <a href="en-us_topic_0116262067.html">ECS Operations Supported by CTS</a>.</p>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p1329615338346">Added <a href="en-us_topic_0116262067.html">Key Operations Supported by CTS</a>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row072512326243"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p310414382249">2023-06-13</p>
@ -678,7 +690,7 @@
<tr id="EN-US_TOPIC_0041169567__row178501417134214"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p3850181754212">2016-10-09</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p8519185714317">Added the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul530951486"><li id="EN-US_TOPIC_0041169567__li1393416104415"><a href="en-us_topic_0032980085.html">Managing ECS Groups</a></li><li id="EN-US_TOPIC_0041169567__li139342144418"><a href="en-us_topic_0039588795.html">Viewing ECS Creation Statuses</a></li><li id="EN-US_TOPIC_0041169567__li1493414134413"><a href="en-us_topic_0039524582.html">Why Does the Failures Area Show an ECS Creation Failure But the ECS List Displays the Created ECS?</a></li></ul>
<ul id="EN-US_TOPIC_0041169567__ul530951486"><li id="EN-US_TOPIC_0041169567__li1393416104415"><a href="en-us_topic_0032980085.html">Managing ECS Groups</a></li><li id="EN-US_TOPIC_0041169567__li139342144418"><a href="en-us_topic_0039588795.html">Viewing the ECS Creation Status</a></li><li id="EN-US_TOPIC_0041169567__li1493414134413"><a href="en-us_topic_0039524582.html">Why Does the Failures Area Show an ECS Creation Failure But the ECS List Displays the Created ECS?</a></li></ul>
<p id="EN-US_TOPIC_0041169567__p13887111124417">Modified the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul39346112441"><li id="EN-US_TOPIC_0041169567__li182219174912">Added information for remotely logging in to ECSs in <a href="en-us_topic_0027268511.html">Logging In to a Windows ECS Using VNC</a>, <a href="en-us_topic_0017955380.html">Logging In to a Linux ECS Using an SSH Key Pair</a>, <a href="en-us_topic_0017955633.html">Logging In to a Linux ECS Using an SSH Password</a>, and <a href="en-us_topic_0017955381.html">Logging In to a Windows ECS Using MSTSC</a>.</li><li id="EN-US_TOPIC_0041169567__li1793471174413">Added document links to the default keyboard types of the ECSs created using public images in <a href="en-us_topic_0027268511.html">Logging In to a Windows ECS Using VNC</a>.</li><li id="EN-US_TOPIC_0041169567__li13934171164410">Added notes on keyboard language settings for VNC-based ECS logins and the mapping between four types of keyboards in <a href="en-us_topic_0027268511.html">Logging In to a Windows ECS Using VNC</a>. Provided configuration examples and links to related FAQs.</li></ul>
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<p id="EN-US_TOPIC_0042400609__p174711158135216"><strong id="EN-US_TOPIC_0042400609__b72843209530">iptables --append OUTPUT --proto tcp --destination 169.254.169.254 --match owner ! --uid-owner root --jump REJECT</strong></p>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0042400609__section318043315019"><h4 class="sectiontitle"><span id="EN-US_TOPIC_0042400609__text10409143713507">ECS</span> Metadata Types</h4><p id="EN-US_TOPIC_0042400609__p4228549122410"><a href="#EN-US_TOPIC_0042400609__table273552371680">Table 1</a> does not contain the following metadata items: ami-id, ami-launch-index, ami-manifest-path, block-device-mapping/, instance-action, instance-id, reservation-id, ramdisk-id, and kernel-id. These metadata items are meaningless and are not recommended.</p>
<div class="section" id="EN-US_TOPIC_0042400609__section318043315019"><h4 class="sectiontitle"><span id="EN-US_TOPIC_0042400609__text10409143713507">ECS</span> Metadata Types</h4><p id="EN-US_TOPIC_0042400609__p4228549122410"><a href="#EN-US_TOPIC_0042400609__table273552371680">Table 1</a> does not contain the following EC2-compatible metadata items: ami-id, ami-launch-index, ami-manifest-path, block-device-mapping/, instance-action, instance-id, reservation-id, ramdisk-id, and kernel-id. These metadata items are meaningless and are not recommended.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0042400609__table273552371680"></a><a name="table273552371680"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0042400609__table273552371680" frame="border" border="1" rules="all"><caption><b>Table 1 </b><span id="EN-US_TOPIC_0042400609__text127811113135116">ECS</span> metadata types</caption><thead align="left"><tr id="EN-US_TOPIC_0042400609__row459785021680"><th align="left" class="cellrowborder" valign="top" width="22%" id="mcps1.3.3.3.2.4.1.1"><p id="EN-US_TOPIC_0042400609__p1611763716833">Metadata Type</p>
</th>
@ -190,7 +190,7 @@
</table>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0042400609__section36703712181817"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0042400609__ul9343141011371"><li id="EN-US_TOPIC_0042400609__li1934321018371">The target <span id="EN-US_TOPIC_0042400609__text1541528124315">ECS</span> has been logged in.</li><li id="EN-US_TOPIC_0042400609__li3501613173718">Security group rules in the outbound direction meet the following requirements:<ul id="EN-US_TOPIC_0042400609__ul24730372153157"><li id="EN-US_TOPIC_0042400609__li4991456153157"><strong id="EN-US_TOPIC_0042400609__b84235270617418">Protocol</strong>: <strong id="EN-US_TOPIC_0042400609__b842352706174111">TCP</strong></li><li id="EN-US_TOPIC_0042400609__li5391447153614"><strong id="EN-US_TOPIC_0042400609__b842352706174117">Port</strong>: <strong id="EN-US_TOPIC_0042400609__b842352706174120">80</strong></li><li id="EN-US_TOPIC_0042400609__li57518749153625"><strong id="EN-US_TOPIC_0042400609__b7921153132519">Destination</strong>: <strong id="EN-US_TOPIC_0042400609__b1492117320252">169.254.0.0/16</strong></li></ul>
<div class="section" id="EN-US_TOPIC_0042400609__section36703712181817"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0042400609__ul9343141011371"><li id="EN-US_TOPIC_0042400609__li1934321018371">The target <span id="EN-US_TOPIC_0042400609__text1541528124315">ECS</span> has been logged in.</li><li id="EN-US_TOPIC_0042400609__li3501613173718">Security group rules in the outbound direction meet the following requirements:<ul id="EN-US_TOPIC_0042400609__ul24730372153157"><li id="EN-US_TOPIC_0042400609__li4991456153157">Protocol: TCP</li><li id="EN-US_TOPIC_0042400609__li5391447153614">Port: 80</li><li id="EN-US_TOPIC_0042400609__li57518749153625">Destination: 169.254.0.0/16</li></ul>
<div class="note" id="EN-US_TOPIC_0042400609__note2229256715423"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0042400609__p6641537815423">If you use the default security group rules for the outbound direction, the metadata can be accessed because the default rules meet the preceding requirements. For details about the default security group rules for the outbound direction, see <a href="en-us_topic_0140323154.html">Default Security Groups and Rules</a>.</p>
</div></div>
</li></ul>
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}</pre>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0042400609__section921029416614"><h4 class="sectiontitle">Security Key (OpenStack Metadata API)</h4><p id="EN-US_TOPIC_0042400609__p38342039161132">This API is used to obtain temporary AKs and SKs.</p>
<div class="note" id="EN-US_TOPIC_0042400609__note8594053165018"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0042400609__ul8608738165031"><li id="EN-US_TOPIC_0042400609__li1032135541617">If an ECS needs to obtain a temporary AK and SK, go to the ECS details page, and configure <strong id="EN-US_TOPIC_0042400609__b9860626211">Agency</strong> for the ECS in the <strong id="EN-US_TOPIC_0042400609__b1364103316113">Management Information</strong> area so that the ECS is authorized on IAM.</li><li id="EN-US_TOPIC_0042400609__li20618354141611">The validity period of a temporary AK and SK is one hour. The temporary AK and SK are updated 10 minutes ahead of the expiration time. During the 10 minutes, both the new and old temporary AKs and SKs can be used.</li><li id="EN-US_TOPIC_0042400609__li21802073165031">When using temporary AKs and SKs, add <strong id="EN-US_TOPIC_0042400609__b842352706202446">'X-Security-Token':{securitytoken}</strong> in the message header. <strong id="EN-US_TOPIC_0042400609__b84235270620252">securitytoken</strong> is the value returned when a call is made to the API.</li></ul>
<div class="section" id="EN-US_TOPIC_0042400609__section921029416614"><h4 class="sectiontitle">Security Key (OpenStack Metadata API)</h4><p id="EN-US_TOPIC_0042400609__p38342039161132">This API is used to obtain a temporary AK/SK.</p>
<div class="note" id="EN-US_TOPIC_0042400609__note8594053165018"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0042400609__ul8608738165031"><li id="EN-US_TOPIC_0042400609__li1032135541617">If an ECS needs to obtain a temporary AK/SK, you need to create and authorize an agency on the IAM console and then go to the ECS details page to configure <strong id="EN-US_TOPIC_0042400609__b9860626211">Agency</strong> for the ECS in the <strong id="EN-US_TOPIC_0042400609__b1364103316113">Management Information</strong> area.</li><li id="EN-US_TOPIC_0042400609__li20618354141611">The validity period of a temporary AK and SK is one hour. The temporary AK and SK are updated 10 minutes ahead of the expiration time. During the 10 minutes, both the new and old temporary AKs and SKs can be used.</li><li id="EN-US_TOPIC_0042400609__li21802073165031">When using temporary AKs and SKs, add <strong id="EN-US_TOPIC_0042400609__b842352706202446">'X-Security-Token':{securitytoken}</strong> in the message header. <strong id="EN-US_TOPIC_0042400609__b84235270620252">securitytoken</strong> is the value returned when a call is made to the API.</li></ul>
</div></div>
<ul id="EN-US_TOPIC_0042400609__ul6007050416845"><li id="EN-US_TOPIC_0042400609__li4325039816845">URI<p id="EN-US_TOPIC_0042400609__p3107564816911"><a name="EN-US_TOPIC_0042400609__li4325039816845"></a><a name="li4325039816845"></a>/openstack/latest/securitykey</p>
</li><li id="EN-US_TOPIC_0042400609__li3227703316849">Usage method<p id="EN-US_TOPIC_0042400609__p5875656116919"><a name="EN-US_TOPIC_0042400609__li3227703316849"></a><a name="li3227703316849"></a>Supports GET requests.</p>

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<p id="EN-US_TOPIC_0046852143__p18401012173148">Method 1: Click <strong id="EN-US_TOPIC_0046852143__b842352706163632">AltGr</strong> on the VNC page and then press the suitable key on the keyboard twice.</p>
<p id="EN-US_TOPIC_0046852143__p1551259817341">Method 2: Press <strong id="EN-US_TOPIC_0046852143__b110925843151232">AltGr</strong>+<strong id="EN-US_TOPIC_0046852143__b8423527069162">~(`)</strong>+<strong id="EN-US_TOPIC_0046852143__b842352706151254">Space</strong>.</p>
</li><li id="EN-US_TOPIC_0046852143__li38360189173548">For ECSs running Windows and Linux, the following characters cannot be input normally: #, {, [, |, \, ^, @, ], }, &curren;, €<p id="EN-US_TOPIC_0046852143__p56013901194716"><a name="EN-US_TOPIC_0046852143__li38360189173548"></a><a name="li38360189173548"></a>To input these characters, do as follows:</p>
<p id="EN-US_TOPIC_0046852143__p36241406175357">Click <strong id="EN-US_TOPIC_0046852143__b691358639">AltGr</strong> on the VNC page and then press the suitable key on the keyboard.</p>
<p id="EN-US_TOPIC_0046852143__p36241406175357">Click <strong id="EN-US_TOPIC_0046852143__b535496246">AltGr</strong> on the VNC page and then press the suitable key on the keyboard.</p>
</li><li id="EN-US_TOPIC_0046852143__li8760458194555">No L'accent circonflexe or Le tr&eacute;ma can be input on characters A, E, I, O, and U using the physical keyboard.<p id="EN-US_TOPIC_0046852143__p228326519471"><a name="EN-US_TOPIC_0046852143__li8760458194555"></a><a name="li8760458194555"></a>To input these characters, do as follows:</p>
<p id="EN-US_TOPIC_0046852143__p4525929719480">Click <strong id="EN-US_TOPIC_0046852143__b842352706152120">^:</strong> on the VNC page and then press the suitable key on the keyboard.</p>
</li><li id="EN-US_TOPIC_0046852143__li50037750155333">No character can be input using the French keypad.<p id="EN-US_TOPIC_0046852143__p30422234195035"><a name="EN-US_TOPIC_0046852143__li50037750155333"></a><a name="li50037750155333"></a>To input these characters, do as follows:</p>

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</div>
<div class="note" id="EN-US_TOPIC_0046912051__note26071892163418"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0046912051__p33320437163418">After disabling a CMK or scheduling the deletion of a CMK takes effect, the EVS disk encrypted using this CMK can still be used until the disk is detached from and then attached to an ECS again. During this process, the disk fails to be attached to the ECS because the CMK cannot be obtained, so the EVS disk becomes unavailable.</p>
</div></div>
<p id="EN-US_TOPIC_0046912051__p173702146375">For details about KMS, see <em id="EN-US_TOPIC_0046912051__i897449861">Key Management Service User Guide</em>.</p>
<p id="EN-US_TOPIC_0046912051__p173702146375">For details about KMS, see <em id="EN-US_TOPIC_0046912051__i536379053">Key Management Service User Guide</em>.</p>
</div>
</div>
<div>

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<div class="section" id="EN-US_TOPIC_0048642616__section2746706105950"><h4 class="sectiontitle">Impact on <span id="EN-US_TOPIC_0048642616__text1789415428342">ECS</span></h4><ul id="EN-US_TOPIC_0048642616__ul2000904310113"><li id="EN-US_TOPIC_0048642616__li4158057911579">When creating an <span id="EN-US_TOPIC_0048642616__text128818191429">ECS</span>, if the selected image supports Cloud-Init, you can use the <strong id="EN-US_TOPIC_0048642616__b0450143011233">User Data</strong> function to specify custom configuration, such as <span id="EN-US_TOPIC_0048642616__text12574123817301">ECS</span> login password to the <span id="EN-US_TOPIC_0048642616__text10228125710911">ECS</span>. Such custom settings will take effect upon <span id="EN-US_TOPIC_0048642616__text1435771541017">ECS</span> initialization. For details, see <a href="en-us_topic_0032380449.html">Injecting User Data</a>.</li><li id="EN-US_TOPIC_0048642616__li4924709610430">If Cloud-Init is supported, ECSs do not support password authentication anymore. All newly created ECSs use key pair authentication. This change will influence your ECS logins. For details, see the following sections:<ul id="EN-US_TOPIC_0048642616__ul19415265103937"><li id="EN-US_TOPIC_0048642616__li42939148103759"><a href="en-us_topic_0013771089.html">Login Overview (Linux)</a></li><li id="EN-US_TOPIC_0048642616__li24750406103813"><a href="en-us_topic_0037633087.html">What Is the Cloudbase-Init Account in Windows ECSs Used for?</a></li><li id="EN-US_TOPIC_0048642616__li61757858104056"><a href="en-us_topic_0031734664.html">Why Does the Login to My Linux ECS Using a Key File Fail?</a></li><li id="EN-US_TOPIC_0048642616__li12097450103839"><a href="en-us_topic_0031736846.html">Why Does the System Display a Message Indicating that the Password for Logging In to an ECS Cannot Be Obtained?</a></li></ul>
</li><li id="EN-US_TOPIC_0048642616__li25296237101910">If Cloud-Init is supported, you can view and use metadata to configure and manage running <span id="EN-US_TOPIC_0048642616__text14752153254217">ECS</span>s. For details, see <a href="en-us_topic_0042400609.html">Obtaining Metadata</a>.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0048642616__section4202207210118"><h4 class="sectiontitle">Impact on AS</h4><ul id="EN-US_TOPIC_0048642616__ul11675179111444"><li id="EN-US_TOPIC_0048642616__li17822332111444">When creating an AS configuration, you can use the <strong id="EN-US_TOPIC_0048642616__b7901175110233">User Data</strong> function to specify <span id="EN-US_TOPIC_0048642616__text2732946174214">ECS</span> configurations for initialization. If the AS configuration has taken effect in an AS group, the <span id="EN-US_TOPIC_0048642616__text11779154943119">ECS</span>s newly created in the AS group will automatically initialize their configurations based on the specified <span id="EN-US_TOPIC_0048642616__text5281103441117">ECS</span> configurations.</li><li id="EN-US_TOPIC_0048642616__li27735704111447">For an existing AS configuration, if its private image does not have Cloud-Init or Cloudbase-Init installed, the login mode of the <span id="EN-US_TOPIC_0048642616__text498535803212">ECS</span>s created in the AS group where the AS configuration takes effect may fail to take effect.<p id="EN-US_TOPIC_0048642616__p1760013719529">To resolve this issue, see "How Does Cloud-Init Affect the AS Service?" in <em id="EN-US_TOPIC_0048642616__i1587094540">Auto Scaling User Guide</em>.</p>
<div class="section" id="EN-US_TOPIC_0048642616__section4202207210118"><h4 class="sectiontitle">Impact on AS</h4><ul id="EN-US_TOPIC_0048642616__ul11675179111444"><li id="EN-US_TOPIC_0048642616__li17822332111444">When creating an AS configuration, you can use the <strong id="EN-US_TOPIC_0048642616__b7901175110233">User Data</strong> function to specify <span id="EN-US_TOPIC_0048642616__text2732946174214">ECS</span> configurations for initialization. If the AS configuration has taken effect in an AS group, the <span id="EN-US_TOPIC_0048642616__text11779154943119">ECS</span>s newly created in the AS group will automatically initialize their configurations based on the specified <span id="EN-US_TOPIC_0048642616__text5281103441117">ECS</span> configurations.</li><li id="EN-US_TOPIC_0048642616__li27735704111447">For an existing AS configuration, if its private image does not have Cloud-Init or Cloudbase-Init installed, the login mode of the <span id="EN-US_TOPIC_0048642616__text498535803212">ECS</span>s created in the AS group where the AS configuration takes effect may fail to take effect.<p id="EN-US_TOPIC_0048642616__p1760013719529">To resolve this issue, see "How Does Cloud-Init Affect the AS Service?" in <em id="EN-US_TOPIC_0048642616__i431510365">Auto Scaling User Guide</em>.</p>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0048642616__section44995720162019"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0048642616__ul27309930162147"><li id="EN-US_TOPIC_0048642616__li57792420162147">When using Cloud-Init, enable DHCP in the VPC which the <span id="EN-US_TOPIC_0048642616__text1781819502422">ECS</span> belongs to.</li><li id="EN-US_TOPIC_0048642616__li3134774162149">When using Cloud-Init, ensure that security group rules for the outbound direction meet the following requirements:<ul id="EN-US_TOPIC_0048642616__ul58881557162226"><li id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_li4991456153157"><strong id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_b84235270617418">Protocol</strong>: <strong id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_b842352706174111">TCP</strong></li><li id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_li5391447153614"><strong id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_b842352706174117">Port</strong>: <strong id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_b842352706174120">80</strong></li><li id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_li57518749153625"><strong id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_b7921153132519">Destination</strong>: <strong id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_b1492117320252">169.254.0.0/16</strong></li></ul>
<div class="section" id="EN-US_TOPIC_0048642616__section44995720162019"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0048642616__ul27309930162147"><li id="EN-US_TOPIC_0048642616__li57792420162147">When using Cloud-Init, enable DHCP in the VPC which the <span id="EN-US_TOPIC_0048642616__text1781819502422">ECS</span> belongs to.</li><li id="EN-US_TOPIC_0048642616__li3134774162149">When using Cloud-Init, ensure that security group rules for the outbound direction meet the following requirements:<ul id="EN-US_TOPIC_0048642616__ul58881557162226"><li id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_li4991456153157">Protocol: TCP</li><li id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_li5391447153614">Port: 80</li><li id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_li57518749153625">Destination: 169.254.0.0/16</li></ul>
<div class="note" id="EN-US_TOPIC_0048642616__note40094412162251"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0048642616__en-us_topic_0042400609_p6641537815423">If you use the default security group rules for the outbound direction, the metadata can be accessed because the default rules meet the preceding requirements. For details about the default security group rules for the outbound direction, see <a href="en-us_topic_0030828257.html#EN-US_TOPIC_0030828257__section15617142420109">Security Group</a>.</p>
</div></div>
</li></ul>

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</div>
<div class="section" id="EN-US_TOPIC_0050735736__section332365612524"><h4 class="sectiontitle">Modifying the Mapping Between the ECS Hostname and IP Address (Modifying the hosts File)</h4><p id="EN-US_TOPIC_0050735736__p6324656145210">If you want to use the changed hostname as the preferred localhost and localhost.localdomain, update the mapping between the hostname and IP address after the hostname is changed and then save the configuration to the corresponding Cloud-Init configuration file so that the new hostname takes effect permanently.</p>
<p id="EN-US_TOPIC_0050735736__p183241756105214">The changed hostname is assumed to be <span class="parmvalue" id="EN-US_TOPIC_0050735736__parmvalue181622046122716"><b>new_hostname</b></span>.</p>
<ol id="EN-US_TOPIC_0050735736__ol1332495615217"><li id="EN-US_TOPIC_0050735736__li193242056135214">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath1861584195"><b>/etc/hostname</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol732545615218"><li id="EN-US_TOPIC_0050735736__li7325135611528">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p163251564524"><a name="EN-US_TOPIC_0050735736__li7325135611528"></a><a name="li7325135611528"></a><strong id="EN-US_TOPIC_0050735736__b9325185611524">sudo vim /etc/hostname</strong></p>
<ol id="EN-US_TOPIC_0050735736__ol1332495615217"><li id="EN-US_TOPIC_0050735736__li193242056135214">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath101326616"><b>/etc/hostname</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol732545615218"><li id="EN-US_TOPIC_0050735736__li7325135611528">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p163251564524"><a name="EN-US_TOPIC_0050735736__li7325135611528"></a><a name="li7325135611528"></a><strong id="EN-US_TOPIC_0050735736__b9325185611524">sudo vim /etc/hostname</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li83251156115219">Change the hostname to the new one.</li><li id="EN-US_TOPIC_0050735736__li123251566527">Run the following command to save and exit the configuration file:<p id="EN-US_TOPIC_0050735736__p532517563522"><a name="EN-US_TOPIC_0050735736__li123251566527"></a><a name="li123251566527"></a><strong id="EN-US_TOPIC_0050735736__b14325156195212">:wq</strong></p>
</li></ol>
</li><li id="EN-US_TOPIC_0050735736__li4325145695220">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath1291904105"><b>/etc/sysconfig/network</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol732675614529"><li id="EN-US_TOPIC_0050735736__li43266569525">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p1232695617521"><a name="EN-US_TOPIC_0050735736__li43266569525"></a><a name="li43266569525"></a><strong id="EN-US_TOPIC_0050735736__b10327556185216">sudo vim /etc/sysconfig/network</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li43271756145214">Change the <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1835952231"><b>HOSTNAME</b></span> value to the new hostname.<p id="EN-US_TOPIC_0050735736__p232718561523"><strong id="EN-US_TOPIC_0050735736__b609476743">HOSTNAME=</strong><em id="EN-US_TOPIC_0050735736__i1603744009">Changed hostname</em></p>
<div class="note" id="EN-US_TOPIC_0050735736__note193271656155215"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0050735736__p1732745617524">If there is no <strong id="EN-US_TOPIC_0050735736__b608765266">HOSTNAME</strong> in the configuration file, manually add this parameter and set it to the changed hostname.</p>
</li><li id="EN-US_TOPIC_0050735736__li4325145695220">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath766701809"><b>/etc/sysconfig/network</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol732675614529"><li id="EN-US_TOPIC_0050735736__li43266569525">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p1232695617521"><a name="EN-US_TOPIC_0050735736__li43266569525"></a><a name="li43266569525"></a><strong id="EN-US_TOPIC_0050735736__b10327556185216">sudo vim /etc/sysconfig/network</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li43271756145214">Change the <span class="parmname" id="EN-US_TOPIC_0050735736__parmname356704585"><b>HOSTNAME</b></span> value to the new hostname.<p id="EN-US_TOPIC_0050735736__p232718561523"><strong id="EN-US_TOPIC_0050735736__b1905346302">HOSTNAME=</strong><em id="EN-US_TOPIC_0050735736__i1572675433">Changed hostname</em></p>
<div class="note" id="EN-US_TOPIC_0050735736__note193271656155215"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0050735736__p1732745617524">If there is no <strong id="EN-US_TOPIC_0050735736__b622206109">HOSTNAME</strong> in the configuration file, manually add this parameter and set it to the changed hostname.</p>
</div></div>
<p id="EN-US_TOPIC_0050735736__p23276566524">For example:</p>
<pre class="screen" id="EN-US_TOPIC_0050735736__screen12327185665216">HOSTNAME=new_hostname</pre>
</li><li id="EN-US_TOPIC_0050735736__li1932710563524">Run the following command to save and exit the configuration file:<p id="EN-US_TOPIC_0050735736__p1932785645219"><a name="EN-US_TOPIC_0050735736__li1932710563524"></a><a name="li1932710563524"></a><strong id="EN-US_TOPIC_0050735736__b183281456155213">:wq</strong></p>
</li></ol>
</li><li id="EN-US_TOPIC_0050735736__li93284560522">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath884438261"><b>/etc/cloud/cloud.cfg</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol732845611521"><li id="EN-US_TOPIC_0050735736__li12328165619528">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p8328135617529"><a name="EN-US_TOPIC_0050735736__li12328165619528"></a><a name="li12328165619528"></a><strong id="EN-US_TOPIC_0050735736__b4328165618523">sudo vim /etc/cloud/cloud.cfg</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li632805615527">Use either of the following methods to modify the configuration file:<ul id="EN-US_TOPIC_0050735736__ul173281656105210"><li id="EN-US_TOPIC_0050735736__li432875665215">Method 1: Change the <span class="parmname" id="EN-US_TOPIC_0050735736__parmname964320419"><b>preserve_hostname</b></span> parameter value or add the <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1731174465"><b>preserve_hostname</b></span> parameter to the configuration file.<p id="EN-US_TOPIC_0050735736__p16328456165217">If <span class="parmname" id="EN-US_TOPIC_0050735736__parmname438147291"><b>preserve_hostname: false</b></span> is already available in the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath2132393850"><b>/etc/cloud/cloud.cfg</b></span> configuration file, change it to <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1883849053"><b>preserve_hostname: true</b></span>. If <span class="parmname" id="EN-US_TOPIC_0050735736__parmname142699298"><b>preserve_hostname</b></span> is unavailable in the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath1011425587"><b>/etc/cloud/cloud.cfg</b></span> configuration file, add <strong id="EN-US_TOPIC_0050735736__b152917265">preserve_hostname: true</strong> before <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1281099191"><b>cloud_init_modules</b></span>.</p>
<p id="EN-US_TOPIC_0050735736__p10329856145213">If you use method 1, the changed hostname still takes effect after the <span id="EN-US_TOPIC_0050735736__text1710587206">ECS</span> is stopped or restarted. However, if the <span id="EN-US_TOPIC_0050735736__text990169822">ECS</span> is used to create a private image and the image is used to create a new <span id="EN-US_TOPIC_0050735736__text1240897456">ECS</span>, the hostname of the new <span id="EN-US_TOPIC_0050735736__text2088409345">ECS</span> is the hostname (<strong id="EN-US_TOPIC_0050735736__b947450594">new_hostname</strong>) used by the private image, and user-defined hostnames cannot be injected using Cloud-Init.</p>
</li><li id="EN-US_TOPIC_0050735736__li2032935615526">Method 2 (recommended): Delete or comment out <strong id="EN-US_TOPIC_0050735736__b159507528">- update_hostname</strong>.<p id="EN-US_TOPIC_0050735736__p132925618523">If you use method 2, the changed hostname still takes effect after the <span id="EN-US_TOPIC_0050735736__text1111387365">ECS</span> is stopped or restarted. If the <span id="EN-US_TOPIC_0050735736__text15512216297">ECS</span> is used to create a private image and the image is used to create a new <span id="EN-US_TOPIC_0050735736__text2512512294">ECS</span>, the changed hostname permanently takes effect, and user-defined hostnames (such as <strong id="EN-US_TOPIC_0050735736__b151218111297">new_new_hostname</strong>) can be injected using Cloud-Init.</p>
</li><li id="EN-US_TOPIC_0050735736__li93284560522">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath716416147"><b>/etc/cloud/cloud.cfg</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol732845611521"><li id="EN-US_TOPIC_0050735736__li12328165619528">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p8328135617529"><a name="EN-US_TOPIC_0050735736__li12328165619528"></a><a name="li12328165619528"></a><strong id="EN-US_TOPIC_0050735736__b4328165618523">sudo vim /etc/cloud/cloud.cfg</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li632805615527">Use either of the following methods to modify the configuration file:<ul id="EN-US_TOPIC_0050735736__ul173281656105210"><li id="EN-US_TOPIC_0050735736__li432875665215">Method 1: Change the <span class="parmname" id="EN-US_TOPIC_0050735736__parmname512365423"><b>preserve_hostname</b></span> parameter value or add the <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1976006065"><b>preserve_hostname</b></span> parameter to the configuration file.<p id="EN-US_TOPIC_0050735736__p16328456165217">If <span class="parmname" id="EN-US_TOPIC_0050735736__parmname382255169"><b>preserve_hostname: false</b></span> is already available in the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath741277160"><b>/etc/cloud/cloud.cfg</b></span> configuration file, change it to <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1701095346"><b>preserve_hostname: true</b></span>. If <span class="parmname" id="EN-US_TOPIC_0050735736__parmname996435540"><b>preserve_hostname</b></span> is unavailable in the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath1638428539"><b>/etc/cloud/cloud.cfg</b></span> configuration file, add <strong id="EN-US_TOPIC_0050735736__b1399182345">preserve_hostname: true</strong> before <span class="parmname" id="EN-US_TOPIC_0050735736__parmname2043427665"><b>cloud_init_modules</b></span>.</p>
<p id="EN-US_TOPIC_0050735736__p10329856145213">If you use method 1, the changed hostname still takes effect after the <span id="EN-US_TOPIC_0050735736__text1118198548">ECS</span> is stopped or restarted. However, if the <span id="EN-US_TOPIC_0050735736__text1119772031">ECS</span> is used to create a private image and the image is used to create a new <span id="EN-US_TOPIC_0050735736__text97725314">ECS</span>, the hostname of the new <span id="EN-US_TOPIC_0050735736__text1271869068">ECS</span> is the hostname (<strong id="EN-US_TOPIC_0050735736__b1335837307">new_hostname</strong>) used by the private image, and user-defined hostnames cannot be injected using Cloud-Init.</p>
</li><li id="EN-US_TOPIC_0050735736__li2032935615526">Method 2 (recommended): Delete or comment out <strong id="EN-US_TOPIC_0050735736__b973697187">- update_hostname</strong>.<p id="EN-US_TOPIC_0050735736__p132925618523">If you use method 2, the changed hostname still takes effect after the <span id="EN-US_TOPIC_0050735736__text725876133">ECS</span> is stopped or restarted. If the <span id="EN-US_TOPIC_0050735736__text15512216297">ECS</span> is used to create a private image and the image is used to create a new <span id="EN-US_TOPIC_0050735736__text2512512294">ECS</span>, the changed hostname permanently takes effect, and user-defined hostnames (such as <strong id="EN-US_TOPIC_0050735736__b151218111297">new_new_hostname</strong>) can be injected using Cloud-Init.</p>
</li></ul>
</li></ol>
</li></ol><ol start="4" id="EN-US_TOPIC_0050735736__ol1433014561520"><li id="EN-US_TOPIC_0050735736__li733018569521">Update the mapping between the hostname and IP address in <span class="parmvalue" id="EN-US_TOPIC_0050735736__parmvalue93301956115220"><b>/etc/hosts</b></span> to an entry starting with 127.0.0.1. Use <span class="parmvalue" id="EN-US_TOPIC_0050735736__parmvalue1933025618522"><b>new_hostname</b></span> as your preferred <strong id="EN-US_TOPIC_0050735736__b74681033142717">localhost</strong> and <strong id="EN-US_TOPIC_0050735736__b11892163518270">localhost.localdomain</strong>.<ol type="a" id="EN-US_TOPIC_0050735736__ol6330205685215"><li id="EN-US_TOPIC_0050735736__li19330115616524">Run the following command to edit <span class="parmvalue" id="EN-US_TOPIC_0050735736__parmvalue03301056155219"><b>/etc/hosts</b></span>:<p id="EN-US_TOPIC_0050735736__p1533025605211"><strong id="EN-US_TOPIC_0050735736__b8331175613521">sudo vim /etc/hosts</strong></p>
@ -52,7 +52,7 @@
127.0.0.1 <strong id="EN-US_TOPIC_0050735736__b833135635217">new_hostname new_hostname</strong></pre>
</li><li id="EN-US_TOPIC_0050735736__li153311356185210">Run the following command to save and exit the configuration file:<p id="EN-US_TOPIC_0050735736__p9331145695217"><a name="EN-US_TOPIC_0050735736__li153311356185210"></a><a name="li153311356185210"></a><strong id="EN-US_TOPIC_0050735736__b113311456195215">:wq</strong></p>
</li></ol>
</li><li id="EN-US_TOPIC_0050735736__li14331115605218">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath1468444623"><b>/etc/cloud/cloud.cfg</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol8331115617528"><li id="EN-US_TOPIC_0050735736__li6331105618528">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p133321056165216"><a name="EN-US_TOPIC_0050735736__li6331105618528"></a><a name="li6331105618528"></a><strong id="EN-US_TOPIC_0050735736__b6332356115213">sudo vim /etc/cloud/cloud.cfg</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li14331115605218">Modify the <span class="filepath" id="EN-US_TOPIC_0050735736__filepath77873965"><b>/etc/cloud/cloud.cfg</b></span> configuration file.<ol type="a" id="EN-US_TOPIC_0050735736__ol8331115617528"><li id="EN-US_TOPIC_0050735736__li6331105618528">Run the following command to edit the configuration file:<p id="EN-US_TOPIC_0050735736__p133321056165216"><a name="EN-US_TOPIC_0050735736__li6331105618528"></a><a name="li6331105618528"></a><strong id="EN-US_TOPIC_0050735736__b6332356115213">sudo vim /etc/cloud/cloud.cfg</strong></p>
</li><li id="EN-US_TOPIC_0050735736__li1833216567525">Set <span class="parmname" id="EN-US_TOPIC_0050735736__parmname0332175619520"><b>manage_etc_hosts</b></span> to <span class="parmname" id="EN-US_TOPIC_0050735736__parmname1133215611527"><b>manage_etc_hosts: false</b></span>.<pre class="screen" id="EN-US_TOPIC_0050735736__screen11332115695217">manage_etc_hosts: false</pre>
</li><li id="EN-US_TOPIC_0050735736__li13329562529">Run the following command to save and exit the configuration file:<p id="EN-US_TOPIC_0050735736__p3332756135212"><a name="EN-US_TOPIC_0050735736__li13329562529"></a><a name="li13329562529"></a><strong id="EN-US_TOPIC_0050735736__b13332165611527">:wq</strong></p>
</li></ol>

12
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@ -12,17 +12,17 @@
<ul id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ul18769785171238"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li1325741171238">For CentOS 6 and Red Hat 6, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol41624950171443"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li45594548171443">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p57885201171447"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li45594548171443"></a><a name="en-us_topic_0057450886_li45594548171443"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b7697751171443">vi /boot/grub/menu.lst</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li19538075171443">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706115641">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706115649">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706115658">kernel</strong> (depending on the system), add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706115711">console=ttyS0</strong> to its end, and delete parameter <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706115723">rhgb quiet</strong>. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b92835785919637">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li6061980171248">For CentOS 7, Red Hat 7, and Ubuntu 14, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol4344894171452"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li58180088171452">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p55209546171459"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li58180088171452"></a><a name="en-us_topic_0057450886_li58180088171452"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b58365653175441">vi /boot/grub2/grub.cfg</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li482766171452">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b988168152">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1537884474">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2071723053">kernel</strong> (depending on the system), add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1805678113">console=ttyS0</strong> to its end, and delete parameter <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b792683246">rhgb quiet</strong>. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b762978066">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li482766171452">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b650946660">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1146941363">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b202302274">kernel</strong> (depending on the system), add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b828202020">console=ttyS0</strong> to its end, and delete parameter <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2022556396">rhgb quiet</strong>. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1555918665">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li499662617132">For SUSE Linux 11, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol36144979171413"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li39085626171413">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p2611227517147"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li39085626171413"></a><a name="en-us_topic_0057450886_li39085626171413"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b45748722171837">vi /boot/grub/menu.1st</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li25642817171428">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b215521630">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1011710740">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1836342707">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1493444810">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1772023644">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li25642817171428">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b971605608">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b354492601">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1942583647">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b985890846">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1163029666">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li62848105171712">For SUSE Linux 12, openSUSE 13, and openSUSE 42, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol28762041171712"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li57531782171712">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p48023993171712"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li57531782171712"></a><a name="en-us_topic_0057450886_li57531782171712"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b38870278172219">vi /boot/grub2/grub.cfg</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li64738205171712">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2033202239">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b336879893">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b74225742">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b847449827115924">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1654442546">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li64738205171712">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b659296959">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2019073896">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b306375078">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b847449827115924">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b635755268">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li8983690171710">For Debian and Ubuntu 16, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol13744349171710"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li56590279171710">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p39550465171710"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li56590279171710"></a><a name="en-us_topic_0057450886_li56590279171710"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b54593791172530">vi /boot/grub/grub.cfg</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li49471090171710">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1865281285">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1972108689">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b868735994">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1172001478">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1941940586">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li49471090171710">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1576093426">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b508933910">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1057957856">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1991502754">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b552238035">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li4553691517177">For Fedora, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol717905417177"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li6461149317177">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p4463252717177"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li6461149317177"></a><a name="en-us_topic_0057450886_li6461149317177"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b40031083172624">vi /boot/grub2/grub.cfg</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li5846497317177">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1526339780">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2082286059">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1023269332">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1238656126">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b835606829">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li5846497317177">Locate the row that contains <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2059718989">linux</strong>, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b2073086963">linux16</strong>, or <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1114372022">kernel</strong> (depending on the system) and add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1235227228">console=ttyS0</strong> to its end. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b514207415">console=ttyS0</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li106424171526">For FreeBSD, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol957823171526"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li8620413171526">Run the following command to open the configuration file:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p10474859171526"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li8620413171526"></a><a name="en-us_topic_0057450886_li8620413171526"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b4471428217566">vi /boot/loader.conf</strong></p>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li43157284171526">Add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706175832">console="comconsole"</strong>. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b858535039">console="comconsole"</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li43157284171526">Add <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706175832">console="comconsole"</strong>. If <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b1947433668">console="comconsole"</strong> already exists, you do not need to add it. Save the change and exit.</li></ol>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li58358914172853">For CoreOS, perform the following steps:<ol type="a" id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ol55468183172853"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li45429473172941">Run the following command to check whether <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b842352706175921">ttyS0</strong> has been configured:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p3717713017324"><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b39660533173218">cat /proc/cmdline | grep ttyS0</strong></p>
<ul id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_ul39194071173021"><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li42793695173021">If yes, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b769578641175950">ttyS0</strong> has been configured.</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li27524297173038">If no, <strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b18579132912131">ttyS0</strong> has not been configured. Go to <a href="#EN-US_TOPIC_0057711189__en-us_topic_0057450886_li29451607172853">2.b</a>.</li></ul>
</li><li id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li29451607172853"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li29451607172853"></a><a name="en-us_topic_0057450886_li29451607172853"></a>Run the following command to open the configuration file to be edited:<p id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_p28525433173339"><a name="EN-US_TOPIC_0057711189__en-us_topic_0057450886_li29451607172853"></a><a name="en-us_topic_0057450886_li29451607172853"></a><strong id="EN-US_TOPIC_0057711189__en-us_topic_0057450886_b47034320173348">vi /usr/share/oem/grub.cfg</strong></p>

4
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@ -146,7 +146,7 @@
</table>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0058758453__section1659682611504"><a name="EN-US_TOPIC_0058758453__section1659682611504"></a><a name="section1659682611504"></a><h4 class="sectiontitle">Importing the External Image File to the IMS Console</h4><p id="EN-US_TOPIC_0058758453__p17965328192814">For details, see "Registering an Image File as a Private Image" in <em id="EN-US_TOPIC_0058758453__i574821321">Image Management Service User Guide</em>.</p>
<div class="section" id="EN-US_TOPIC_0058758453__section1659682611504"><a name="EN-US_TOPIC_0058758453__section1659682611504"></a><a name="section1659682611504"></a><h4 class="sectiontitle">Importing the External Image File to the IMS Console</h4><p id="EN-US_TOPIC_0058758453__p17965328192814">For details, see "Registering an Image File as a Private Image" in <em id="EN-US_TOPIC_0058758453__i180928555">Image Management Service User Guide</em>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0058758453__section1949113217282"><a name="EN-US_TOPIC_0058758453__section1949113217282"></a><a name="section1949113217282"></a><h4 class="sectiontitle">Setting NIC Multi-Queue for the Image</h4><p id="EN-US_TOPIC_0058758453__p58271414183619">Windows OSs have not commercially supported NIC multi-queue. If you enable NIC multi-queue in a Windows image, starting an ECS created using such an image may be slow.</p>
<p id="EN-US_TOPIC_0058758453__en-us_topic_0029124501_p50557625103330">Use one of the following methods to set the NIC multi-queue attribute:</p>
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</li></ol>
<p id="EN-US_TOPIC_0058758453__p1971624101317"></p>
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<div class="section" id="EN-US_TOPIC_0058758453__section1841681225617"><a name="EN-US_TOPIC_0058758453__section1841681225617"></a><a name="section1841681225617"></a><h4 class="sectiontitle">Creating an <span id="EN-US_TOPIC_0058758453__text316151522317">ECS</span> Using a Private Image</h4><div class="p" id="EN-US_TOPIC_0058758453__p1518372618317">You can create an <span id="EN-US_TOPIC_0058758453__text1541214215710">ECS</span> using a registered private image. For details, see <a href="en-us_topic_0021831611.html">Creating an ECS</a>. Note the following when setting the parameters:<ul id="EN-US_TOPIC_0058758453__ul107151117143111"><li id="EN-US_TOPIC_0058758453__li8715181711317"><strong id="EN-US_TOPIC_0058758453__b1505938051">Region</strong>: Select the region where the private image is located.</li><li id="EN-US_TOPIC_0058758453__li12715717193114"><strong id="EN-US_TOPIC_0058758453__b0297112994615">Image</strong>: Click <strong id="EN-US_TOPIC_0058758453__b329712913465">Private image</strong> and then select the desired image from the drop-down list.</li></ul>
<div class="section" id="EN-US_TOPIC_0058758453__section1841681225617"><a name="EN-US_TOPIC_0058758453__section1841681225617"></a><a name="section1841681225617"></a><h4 class="sectiontitle">Creating an <span id="EN-US_TOPIC_0058758453__text316151522317">ECS</span> Using a Private Image</h4><div class="p" id="EN-US_TOPIC_0058758453__p1518372618317">You can create an <span id="EN-US_TOPIC_0058758453__text1541214215710">ECS</span> using a registered private image. For details, see <a href="en-us_topic_0021831611.html">Creating an ECS</a>. Note the following when setting the parameters:<ul id="EN-US_TOPIC_0058758453__ul107151117143111"><li id="EN-US_TOPIC_0058758453__li8715181711317"><strong id="EN-US_TOPIC_0058758453__b331029889">Region</strong>: Select the region where the private image is located.</li><li id="EN-US_TOPIC_0058758453__li12715717193114"><strong id="EN-US_TOPIC_0058758453__b0297112994615">Image</strong>: Click <strong id="EN-US_TOPIC_0058758453__b329712913465">Private image</strong> and then select the desired image from the drop-down list.</li></ul>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0058758453__section214227201118"><a name="EN-US_TOPIC_0058758453__section214227201118"></a><a name="section214227201118"></a><h4 class="sectiontitle">Enabling NIC Multi-Queue</h4><p id="EN-US_TOPIC_0058758453__p9725123784">KVM Windows <span id="EN-US_TOPIC_0058758453__text16625933172318">ECS</span>s use private images to support NIC multi-queue. For details, see "How Do I Set NIC Multi-queue Feature of an Image?" in <em id="EN-US_TOPIC_0058758453__i84235269717829">Image Management Service User Guide</em>.</p>

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<h1 class="topictitle1">Exporting ECS Information</h1>
<div id="body1495618695087"><div class="section" id="EN-US_TOPIC_0060610074__section50407262175221"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0060610074__p61429748175232">The information of all <span id="EN-US_TOPIC_0060610074__text18763911141020">ECS</span>s under your account can be exported in a CSV file to a local directory. The file includes the IDs, private IP addresses, and <span id="EN-US_TOPIC_0060610074__text585910407473">EIP</span>s of your <span id="EN-US_TOPIC_0060610074__text1819541316107">ECS</span>s.</p>
<div id="body1495618695087"><div class="section" id="EN-US_TOPIC_0060610074__section50407262175221"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0060610074__p61429748175232">The information of all <span id="EN-US_TOPIC_0060610074__text18763911141020">ECS</span>s in your account can be exported to a CSV file locally. The file includes the IDs, private IP addresses, and <span id="EN-US_TOPIC_0060610074__text585910407473">EIP</span>s of your <span id="EN-US_TOPIC_0060610074__text1819541316107">ECS</span>s.</p>
</div>
<div class="section" id="EN-US_TOPIC_0060610074__section8755447183137"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0060610074__ol53102723183146"><li id="EN-US_TOPIC_0060610074__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0060610074__li464234814566">Click <span><img id="EN-US_TOPIC_0060610074__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0060610074__li3026638618324">Under <strong id="EN-US_TOPIC_0060610074__b17814192185810"><span id="EN-US_TOPIC_0060610074__text15813921205815">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0060610074__b481482125811">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0060610074__li27041584183239">In the upper right corner above the <span id="EN-US_TOPIC_0060610074__text136517171010">ECS</span> list, click <span><img id="EN-US_TOPIC_0060610074__image101125644218" src="en-us_image_0142360062.png"></span>.<p id="EN-US_TOPIC_0060610074__p4335838818357">The system will automatically export all <span id="EN-US_TOPIC_0060610074__text12201619121013">ECS</span>s in the current region under your account to a local directory.</p>
<div class="section" id="EN-US_TOPIC_0060610074__section8755447183137"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0060610074__ol53102723183146"><li id="EN-US_TOPIC_0060610074__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0060610074__li464234814566">Click <span><img id="EN-US_TOPIC_0060610074__en-us_topic_0014250631_image1862675853202121" src="en-us_image_0210779229.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0060610074__li3026638618324">Under <strong id="EN-US_TOPIC_0060610074__b1886895016177"><span id="EN-US_TOPIC_0060610074__text4868155071718">Computing</span></strong>, choose <strong id="EN-US_TOPIC_0060610074__b586865016176">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0060610074__li27041584183239">In the upper right corner above the <span id="EN-US_TOPIC_0060610074__text136517171010">ECS</span> list, click <span><img id="EN-US_TOPIC_0060610074__image101125644218" src="en-us_image_0142360062.png"></span>.<p id="EN-US_TOPIC_0060610074__p4335838818357">The system will automatically export all <span id="EN-US_TOPIC_0060610074__text12201619121013">ECS</span>s in the current region under your account to a local directory.</p>
<div class="fignone" id="EN-US_TOPIC_0060610074__fig14349111531814"><span class="figcap"><b>Figure 1 </b>Exporting ECS information</span><br><span><img id="EN-US_TOPIC_0060610074__image153506153183" src="en-us_image_0000001657287656.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="note" id="EN-US_TOPIC_0060610074__note82441949182614"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0060610074__p2244184912263">To export certain <span id="EN-US_TOPIC_0060610074__text4250320121011">ECS</span>s, select the target <span id="EN-US_TOPIC_0060610074__text1597816265246">ECS</span>s and click <span><img id="EN-US_TOPIC_0060610074__image1069965983716" src="en-us_image_0142360062.png"></span> in the upper right corner of the page.</p>
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