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ecs_umn_1109

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Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: guoyanyan <guoyanyan3@huawei.com>
Co-committed-by: guoyanyan <guoyanyan3@huawei.com>
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guoyanyan
2022-12-05 15:44:44 +00:00
committed by zuul
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<a name="EN-US_TOPIC_0000001128604648"></a><a name="EN-US_TOPIC_0000001128604648"></a>
<h1 class="topictitle1">Backing Up ECS Data</h1>
<div id="body0000001128604648"><div class="section" id="EN-US_TOPIC_0000001128604648__section1650061192010"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0000001128604648__p8263208152018">CBR enhances data integrity and service continuity. For example, if an ECS or a EVS disk is faulty or a misoperation causes data loss, you can use data backups to quickly restore data. This section describes how to back up ECSs and EVS disks.</p>
<div id="body0000001128604648"><div class="section" id="EN-US_TOPIC_0000001128604648__section1650061192010"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0000001128604648__p8263208152018">CBR enhances data integrity and service continuity. For example, if an ECS or EVS disk is faulty or a misoperation causes data loss, you can use data backups to quickly restore data. This section describes how to back up ECSs and EVS disks.</p>
<p id="EN-US_TOPIC_0000001128604648__p8177113721018">For more information, <a href="en-us_topic_0000001128445638.html#EN-US_TOPIC_0000001128445638__section10399144613501">CBR Architecture</a>, <a href="en-us_topic_0000001128445638.html#EN-US_TOPIC_0000001128445638__section696712594578">Backup Mechanism</a>, and <a href="en-us_topic_0000001128445638.html#EN-US_TOPIC_0000001128445638__section533362013">Backup Options</a>.</p>
<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>
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<div id="body0000001174675379"><div class="section" id="EN-US_TOPIC_0000001174675379__section4212145215467"><h4 class="sectiontitle">What Is CBR?</h4><p id="EN-US_TOPIC_0000001174675379__p768573334718">Cloud Backup and Recovery (CBR) enables you to back up cloud servers 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.</p>
<p id="EN-US_TOPIC_0000001174675379__p96851733104714">CBR protects your services by ensuring the security and consistency of your data.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001174675379__section1660873164114"><h4 class="sectiontitle">Differences Between Cloud Server Backup and Cloud Disk Backup</h4><div class="p" id="EN-US_TOPIC_0000001174675379__p1852521716489">You can back up ECS data using the Cloud Server Backup or Cloud Disk Backup function.<ul id="EN-US_TOPIC_0000001174675379__ul18366112610528"><li id="EN-US_TOPIC_0000001174675379__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_0000001174675379__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 class="section" id="EN-US_TOPIC_0000001174675379__section1660873164114"><h4 class="sectiontitle">Differences Between Cloud Server Backup and Cloud Disk Backup</h4><div class="p" id="EN-US_TOPIC_0000001174675379__p1852521716489">You can back up ECS data using Cloud Server Backup or Cloud Disk Backup.<ul id="EN-US_TOPIC_0000001174675379__ul18366112610528"><li id="EN-US_TOPIC_0000001174675379__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_0000001174675379__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 class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001174675379__table1210762195612" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Differences between cloud server backup and cloud disk backup</caption><thead align="left"><tr id="EN-US_TOPIC_0000001174675379__row5108162155613"><th align="left" class="cellrowborder" valign="top" width="18.45184518451845%" id="mcps1.3.2.2.2.2.4.1.1"><p id="EN-US_TOPIC_0000001174675379__p910862155620">Item</p>
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<h1 class="topictitle1">Application Scenarios for Using Key Pairs</h1>
<div id="body0000001278335673"><div class="section" id="EN-US_TOPIC_0000001278335673__section336851111274"><h4 class="sectiontitle">Key Pairs</h4><p id="EN-US_TOPIC_0000001278335673__p48923129273">Key pairs are a set of security credentials for identity authentication when you remotely log in to ECSs.</p>
<p id="EN-US_TOPIC_0000001278335673__p12739174062815">A key pair consists of a public key and a private key. ECS stores the public key and you store the private key. If you have imported a public key into a Linux ECS, you can use the corresponding private key to log in to the ECS without a password. Therefore, you do not need to worry about password interception, cracking, or leakage.</p>
<p id="EN-US_TOPIC_0000001278335673__p12739174062815">A key pair consists of a public key and a private key. Key Pair Service (KPS) stores the public key and you store the private key. If you have imported a public key into a Linux ECS, you can use the corresponding private key to log in to the ECS without a password. Therefore, you do not need to worry about password interception, cracking, or leakage.</p>
</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<div class="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.<ul id="EN-US_TOPIC_0000001278335673__ul181461546172719"><li id="EN-US_TOPIC_0000001278335673__li71454469278">When creating an ECS, 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>
<ul id="EN-US_TOPIC_0000001278335673__ul114361152198"><li id="EN-US_TOPIC_0000001278335673__li14436191511190">Logging in to a Linux ECS<div class="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.<ul id="EN-US_TOPIC_0000001278335673__ul181461546172719"><li id="EN-US_TOPIC_0000001278335673__li71454469278">When creating an ECS, 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>
</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 therefore is more secure.</p>

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<h1 class="topictitle1">(Recommended) Creating a Key Pair on the Management Console</h1>
<div id="body0000001278350057"><div class="section" id="EN-US_TOPIC_0000001278350057__section4859995204421"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0000001278350057__p45751306523">You can use the management console to create a key pair. ECS stores the public key and you store the private key.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001278350057__section35336147204538"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001278350057__ol1373281010048"><li id="EN-US_TOPIC_0000001278350057__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0000001278350057__li0975135720214">Click <span><img id="EN-US_TOPIC_0000001278350057__en-us_topic_0014250631_image1733511156361" src="en-us_image_0000001234668870.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0000001278350057__li3861581410048">Under <strong id="EN-US_TOPIC_0000001278350057__b57052041164811"><span id="EN-US_TOPIC_0000001278350057__text1570564144817">Computing</span></strong>, click <strong id="EN-US_TOPIC_0000001278350057__b9706134115481">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li1199800610048">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001278350057__b162483549591">Key Pair</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li4087319010048">On the <strong id="EN-US_TOPIC_0000001278350057__b9885614153417">Key Pair Service</strong> page, click <strong id="EN-US_TOPIC_0000001278350057__b1840322415452">Create Key Pair</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li3231439110048">Enter a key pair name and click <strong id="EN-US_TOPIC_0000001278350057__b1927165654814">OK</strong>.<p id="EN-US_TOPIC_0000001278350057__p1740111712710">The default key pair name consists of <strong id="EN-US_TOPIC_0000001278350057__b154723103494">KeyPair-</strong> and four random characters in the "KeyPair-<em id="EN-US_TOPIC_0000001278350057__i103938406367">xxxx</em>" format. Change it to an easy-to-remember one, for example, <strong id="EN-US_TOPIC_0000001278350057__b947341014910">KeyPair-xxxx_ecs</strong>.</p>
</li><li id="EN-US_TOPIC_0000001278350057__li22000910048">Manually or automatically download a .pem private key file with the name that you specify as the key name. Store it in a secure place and click <strong id="EN-US_TOPIC_0000001278350057__b9321655175319">OK</strong>.<div class="note" id="EN-US_TOPIC_0000001278350057__note118145116483"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001278350057__p158141810481">This is the only chance for you to save the private key file. Keep it secure. You'll need to provide the key pair name when you create an ECS, and the corresponding private key each time you connect to the ECS through SSH.</p>
<div class="section" id="EN-US_TOPIC_0000001278350057__section35336147204538"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001278350057__ol1373281010048"><li id="EN-US_TOPIC_0000001278350057__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0000001278350057__li0975135720214">Click <span><img id="EN-US_TOPIC_0000001278350057__en-us_topic_0014250631_image1733511156361" src="en-us_image_0000001234668870.png"></span> in the upper left corner and select your region and project.</li><li id="EN-US_TOPIC_0000001278350057__li3861581410048">Under <strong id="EN-US_TOPIC_0000001278350057__b57052041164811"><span id="EN-US_TOPIC_0000001278350057__text1570564144817">Computing</span></strong>, click <strong id="EN-US_TOPIC_0000001278350057__b9706134115481">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li1199800610048">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001278350057__b162483549591">Key Pair</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li4087319010048">On the <strong id="EN-US_TOPIC_0000001278350057__b9885614153417">Key Pair Service</strong> page, click <strong id="EN-US_TOPIC_0000001278350057__b1840322415452">Create Key Pair</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li55901884715">Enter a key pair name.<p id="EN-US_TOPIC_0000001278350057__p926788112916"><a name="EN-US_TOPIC_0000001278350057__li55901884715"></a><a name="li55901884715"></a>A key pair name consists of two parts: KeyPair and four random digits (KeyPair-xxxx).</p>
</li><li id="EN-US_TOPIC_0000001278350057__li21039497612">Click <strong id="EN-US_TOPIC_0000001278350057__b19193410164516">OK</strong>.</li><li id="EN-US_TOPIC_0000001278350057__li22000910048">Manually or automatically download a .pem private key file with the name that you specify as the key name. Store it in a secure place and click <strong id="EN-US_TOPIC_0000001278350057__b9321655175319">OK</strong>.<div class="note" id="EN-US_TOPIC_0000001278350057__note118145116483"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001278350057__p158141810481">This is the only chance for you to save the private key file. Keep it secure. You'll need to provide the key pair name when you create an ECS, and the corresponding private key each time you connect to the ECS through SSH.</p>
</div></div>
</li></ol>
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<td class="cellrowborder" valign="top" width="15.191519151915193%" headers="mcps1.3.2.3.2.5.1.2 "><p id="EN-US_TOPIC_0013771089__p139417507315">Windows</p>
</td>
<td class="cellrowborder" valign="top" width="43.154315431543154%" headers="mcps1.3.2.3.2.5.1.3 "><p id="EN-US_TOPIC_0013771089__p394117501734">Use a remote login tool, such as PuTTY or Xshell.</p>
<ul id="EN-US_TOPIC_0013771089__ul294114501734"><li id="EN-US_TOPIC_0013771089__li1394185020312">Password-authenticated: <a href="en-us_topic_0017955633.html#EN-US_TOPIC_0017955633__section62068112020">Logging In to the Linux ECS from a Local Windows Server</a></li><li id="EN-US_TOPIC_0013771089__li794110507317">Key-pair-authenticated: <a href="en-us_topic_0017955380.html#EN-US_TOPIC_0017955380__section47918167111724">Logging In to the Linux ECS from Local Windows</a></li></ul>
<ul id="EN-US_TOPIC_0013771089__ul294114501734"><li id="EN-US_TOPIC_0013771089__li1394185020312">Password-authenticated: <a href="en-us_topic_0017955633.html#EN-US_TOPIC_0017955633__section62068112020">Logging In to the Linux ECS from a Local Windows Server</a></li><li id="EN-US_TOPIC_0013771089__li794110507317">Key-pair-authenticated: <a href="en-us_topic_0017955380.html#EN-US_TOPIC_0017955380__section47918167111724">Logging In to the Linux ECS from Local Windows Server</a></li></ul>
</td>
<td class="cellrowborder" rowspan="2" valign="top" width="29.072907290729074%" headers="mcps1.3.2.3.2.5.1.4 "><p id="EN-US_TOPIC_0013771089__p109411650734">The target ECS has an EIP bound.</p>
<p id="EN-US_TOPIC_0013771089__p188747342010"></p>
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<tr id="EN-US_TOPIC_0013771089__row1994195019319"><td class="cellrowborder" valign="top" headers="mcps1.3.2.3.2.5.1.1 "><p id="EN-US_TOPIC_0013771089__p69411050137">Linux</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.3.2.5.1.2 "><p id="EN-US_TOPIC_0013771089__p16941450032">Run commands.</p>
<ul id="EN-US_TOPIC_0013771089__ul994119501938"><li id="EN-US_TOPIC_0013771089__li6941850232">Password-authenticated: <a href="en-us_topic_0017955633.html#EN-US_TOPIC_0017955633__section20811823174313">Logging In to the Linux ECS from a Local Linux Server</a></li><li id="EN-US_TOPIC_0013771089__li49415501833">Key-pair-authenticated: <a href="en-us_topic_0017955380.html#EN-US_TOPIC_0017955380__section3666784111724">Logging In to the Linux ECS from Local Linux</a></li></ul>
<ul id="EN-US_TOPIC_0013771089__ul994119501938"><li id="EN-US_TOPIC_0013771089__li6941850232">Password-authenticated: <a href="en-us_topic_0017955633.html#EN-US_TOPIC_0017955633__section20811823174313">Logging In to the Linux ECS from a Local Linux Server</a></li><li id="EN-US_TOPIC_0013771089__li49415501833">Key-pair-authenticated: <a href="en-us_topic_0017955380.html#EN-US_TOPIC_0017955380__section3666784111724">Logging In to the Linux ECS from Local Linux Server</a></li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0013771089__row1894116502312"><td class="cellrowborder" valign="top" headers="mcps1.3.2.3.2.5.1.1 "><p id="EN-US_TOPIC_0013771089__p139411250137">Windows</p>

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</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0013771092__section9461027528"><a name="EN-US_TOPIC_0013771092__section9461027528"></a><a name="section9461027528"></a><h4 class="sectiontitle">Follow-up Procedure</h4><p id="EN-US_TOPIC_0013771092__p8156201916532">Perform the following operations in the event of a specifications modification failure:</p>
<ol id="EN-US_TOPIC_0013771092__ol8483192220537"><li id="EN-US_TOPIC_0013771092__li16375104774517">Log in to the management console.</li><li id="EN-US_TOPIC_0013771092__li206631552125313">Under <strong id="EN-US_TOPIC_0013771092__b06511539204113">Management &amp; Deployment</strong>, click <strong id="EN-US_TOPIC_0013771092__b16652193984116">Cloud Trace Service</strong>.</li><li id="EN-US_TOPIC_0013771092__li077853845414">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0013771092__b842352706143413">Trace List</strong>.</li><li id="EN-US_TOPIC_0013771092__li104504323416">In the <strong id="EN-US_TOPIC_0013771092__b44447745514440">Trace Name</strong> column, locate the <strong id="EN-US_TOPIC_0013771092__b842352706143624">resizeServer</strong> event by resource ID.<p id="EN-US_TOPIC_0013771092__p1166001972618">The resource ID is the ID of the <span id="EN-US_TOPIC_0013771092__text169919920413">ECS</span> on which the specifications modification failed.</p>
<ol id="EN-US_TOPIC_0013771092__ol8483192220537"><li id="EN-US_TOPIC_0013771092__li16375104774517">Log in to the management console.</li><li id="EN-US_TOPIC_0013771092__li206631552125313">Under <strong id="EN-US_TOPIC_0013771092__b1044861021413">Management &amp; Deployment</strong>, select <strong id="EN-US_TOPIC_0013771092__b891618170130">Cloud Trace Service</strong>.</li><li id="EN-US_TOPIC_0013771092__li077853845414">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0013771092__b842352706143413">Trace List</strong>.</li><li id="EN-US_TOPIC_0013771092__li104504323416">In the <strong id="EN-US_TOPIC_0013771092__b44447745514440">Trace Name</strong> column, locate the <strong id="EN-US_TOPIC_0013771092__b842352706143624">resizeServer</strong> event by resource ID.<p id="EN-US_TOPIC_0013771092__p1166001972618">The resource ID is the ID of the <span id="EN-US_TOPIC_0013771092__text169919920413">ECS</span> on which the specifications modification failed.</p>
</li><li id="EN-US_TOPIC_0013771092__li648352205319">Click <strong id="EN-US_TOPIC_0013771092__b842352706144643">View Trace</strong> in the <strong id="EN-US_TOPIC_0013771092__b842352706144646">Operation</strong> column to view the failure cause.<p id="EN-US_TOPIC_0013771092__p6736191420314">If the fault cannot be rectified based on logs, contact customer service.</p>
</li></ol>
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</li><li id="EN-US_TOPIC_0013771111__li59799169204844">Key Management Service (KMS)<p id="EN-US_TOPIC_0013771111__p4354864204940"><a name="EN-US_TOPIC_0013771111__li59799169204844"></a><a name="li59799169204844"></a>The encryption feature relies on KMS. You can use an encrypted image or EVS disks when creating an ECS. In such a case, you are required to use the key provided by KMS to improve data security.</p>
</li><li id="EN-US_TOPIC_0013771111__li786535134316">Cloud Trace Service (CTS)<p id="EN-US_TOPIC_0013771111__p4315155564311"><a name="EN-US_TOPIC_0013771111__li786535134316"></a><a name="li786535134316"></a>Records <span id="EN-US_TOPIC_0013771111__text86958464447">ECS</span>-related operations for later query, audit, and backtrack.</p>
</li><li id="EN-US_TOPIC_0013771111__li136321044192215">Cloud Backup and Recovery (CBR)<p id="EN-US_TOPIC_0013771111__p176331644192217"><a name="EN-US_TOPIC_0013771111__li136321044192215"></a><a name="li136321044192215"></a>Backs up EVS disks and <span id="EN-US_TOPIC_0013771111__text164149164410">ECS</span>s for restoration. You can back up all EVS disks (including the system disk and data disks) attached to an <span id="EN-US_TOPIC_0013771111__text1918193523512">ECS</span> and use the backup to restore the <span id="EN-US_TOPIC_0013771111__text133244514443">ECS</span> data.</p>
</li><li id="EN-US_TOPIC_0013771111__li31931436604">Tag Management Service (TMS)<p id="EN-US_TOPIC_0013771111__p657945113014"><a name="EN-US_TOPIC_0013771111__li31931436604"></a><a name="li31931436604"></a>A tag identifies an ECS. Adding tags to an ECS facilitates ECS identification and management.</p>
</li><li id="EN-US_TOPIC_0013771111__li31931436604">Tag Management Service (TMS)<p id="EN-US_TOPIC_0013771111__p657945113014"><a name="EN-US_TOPIC_0013771111__li31931436604"></a><a name="li31931436604"></a>Tags can be used to identify ECSs for easy management.</p>
</li></ul>
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<h1 class="topictitle1">What Is ECS?</h1>
<h1 class="topictitle1">What Is <span id="text191201416161518">ECS</span>?</h1>
<div id="body55752527"><p id="EN-US_TOPIC_0013771112__p024184315493">An Elastic Cloud Server (ECS) is a basic computing unit that consists of vCPUs, memory, OS, and Elastic Volume Service (EVS) disks. After an <span id="EN-US_TOPIC_0013771112__text852305312495">ECS</span> is created, you can use it on the cloud similarly to how you would use your local PC or physical server.</p>
<p id="EN-US_TOPIC_0013771112__p47101664518"><span id="EN-US_TOPIC_0013771112__text33411108512">ECS</span>s support self-service creation, modification, and operation. You can create an <span id="EN-US_TOPIC_0013771112__text1038617675911">ECS</span> by specifying its vCPUs, memory, OS, and login mode. After an <span id="EN-US_TOPIC_0013771112__text255114101595">ECS</span> is created, you can modify its specifications if necessary. ECS works with other services to provide a reliable, secure, efficient computing environment.</p>
<ul id="EN-US_TOPIC_0013771112__ul5683122783111"><li id="EN-US_TOPIC_0013771112__li1168311276318">For details about the operating systems supported by ECS, see <a href="en-us_topic_0030828254.html">Image Types</a>.</li><li id="EN-US_TOPIC_0013771112__li1868312710319">For details about login modes, see <a href="en-us_topic_0092494193.html">Logging In to an ECS</a>.</li></ul>
<ul id="EN-US_TOPIC_0013771112__ul5683122783111"><li id="EN-US_TOPIC_0013771112__li1168311276318">For details about the operating systems supported by ECS, see <a href="en-us_topic_0030828254.html">Image Types</a>.</li><li id="EN-US_TOPIC_0013771112__li1868312710319">For details about the login authentication mode, see <a href="en-us_topic_0092494193.html">Logging In to an ECS</a>.</li></ul>
<div class="section" id="EN-US_TOPIC_0013771112__section25920740113331"><h4 class="sectiontitle">System Architecture</h4><p id="EN-US_TOPIC_0013771112__p36030326113343"><span id="EN-US_TOPIC_0013771112__text1071310409595">ECS</span> works with other products and services to provide computing, storage, and network resources. You can quickly migrate and replicate existing ECSs using images.</p>
<ul id="EN-US_TOPIC_0013771112__ul39646801113416"><li id="EN-US_TOPIC_0013771112__li49170428113458"><span id="EN-US_TOPIC_0013771112__text2515225144312">ECS</span>s can be deployed in multiple availability zones (AZs) connected with each other through an internal network. If one AZ becomes faulty, other AZs in the same region will not be affected.</li><li id="EN-US_TOPIC_0013771112__li49614826113518">With the Virtual Private Cloud (VPC) service, you can build your own dedicated network on the cloud. You can also set subnets and security groups within your VPC for further isolation. You can allow your VPC to communicate with the external network through an <span id="EN-US_TOPIC_0013771112__text9714352173411">EIP</span> (bandwidth support required).</li><li id="EN-US_TOPIC_0013771112__li860244113533">With the Image Management Service (IMS), you can use an image to create <span id="EN-US_TOPIC_0013771112__text154203210180">ECS</span>s. Alternatively, you can use an existing <span id="EN-US_TOPIC_0013771112__text145585117201">ECS</span> to create a private image and use the private image to create the same <span id="EN-US_TOPIC_0013771112__text2031834014312">ECS</span>s for rapid service deployment.</li><li id="EN-US_TOPIC_0013771112__li45571980113416">Elastic Volume Service (EVS) provides storage space and Volume Backup Service (VBS) provides data backup and restoration functions.</li><li id="EN-US_TOPIC_0013771112__li115141636122018">Cloud Eye lets you keep a close eye on the performance and resource utilization of <span id="EN-US_TOPIC_0013771112__text562624654314">ECS</span>s, ensuring <span id="EN-US_TOPIC_0013771112__text7334938142515">ECS</span> reliability and availability.</li><li id="EN-US_TOPIC_0013771112__li179651546225">Volume Backup Service (VBS) allows you to create data backups for EVS disks and use the backups to restore the EVS disks. This maximizes user data correctness and security.</li><li id="EN-US_TOPIC_0013771112__li42327332278">Cloud Server Backup Service (CSBS) backs up all EVS disks of an ECS, including the system disk and data disks, and uses the backup to restore the ECS.</li></ul>
<div class="fignone" id="EN-US_TOPIC_0013771112__fig36062790113621"><span class="figcap"><b>Figure 1 </b>System architecture</span><br><span><img class="imgResize" id="EN-US_TOPIC_0013771112__image319962452815" src="en-us_image_0071898891.png" title="Click to enlarge"></span></div>
</div>
<div class="section" id="EN-US_TOPIC_0013771112__section4598730144410"><h4 class="sectiontitle">Access Methods</h4><div class="p" id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_p43867502165751">The public cloud provides a web-based service management platform. You can access ECSs through HTTPS-compliant application programming interfaces (APIs) or the management console.<ul id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_ul59263200165751"><li id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_li63606753165751">Accessing ECSs through APIs<p id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_p35589866165751"><a name="EN-US_TOPIC_0013771112__en-us_topic_0029700409_li63606753165751"></a><a name="en-us_topic_0029700409_li63606753165751"></a>Use this method if you are required to integrate the ECSs on the public cloud platform into a third-party system for secondary development. For detailed operations, see <em id="EN-US_TOPIC_0013771112__i842352697114113">Elastic Cloud Server API Reference</em>.</p>
<div class="section" id="EN-US_TOPIC_0013771112__section4598730144410"><h4 class="sectiontitle">Access Methods</h4><div class="p" id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_p43867502165751">You can access ECS through the web-based management console or HTTPS-based application programming interfaces (APIs).<ul id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_ul59263200165751"><li id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_li63606753165751">Accessing ECSs through APIs<p id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_p35589866165751"><a name="EN-US_TOPIC_0013771112__en-us_topic_0029700409_li63606753165751"></a><a name="en-us_topic_0029700409_li63606753165751"></a>Use this method if you intend to integrate the ECSs on the cloud platform into a third-party system for secondary development. For details, see <em id="EN-US_TOPIC_0013771112__i842352697114113">Elastic Cloud Server API Reference</em>.</p>
</li><li id="EN-US_TOPIC_0013771112__en-us_topic_0029700409_li51873340165751">Accessing ECSs through the management console<p id="EN-US_TOPIC_0013771112__p19101516131917"><a name="EN-US_TOPIC_0013771112__en-us_topic_0029700409_li51873340165751"></a><a name="en-us_topic_0029700409_li51873340165751"></a>Use this method if you are not required to integrate ECSs with a third-party system.</p>
<p id="EN-US_TOPIC_0013771112__p125490200197">After registering on the public cloud platform, log in to the management console and click <strong id="EN-US_TOPIC_0013771112__b2135810012144944">Elastic Cloud Server</strong> under <strong id="EN-US_TOPIC_0013771112__b71563785144944">Compute</strong> on the homepage. </p>
<p id="EN-US_TOPIC_0013771112__p125490200197">Log in to the management console with your account and choose <strong id="EN-US_TOPIC_0013771112__b1217254116130">Elastic Cloud Server</strong> on the homepage. </p>
</li></ul>
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<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 detailed <span id="EN-US_TOPIC_0017130261__text128503371694">ECS</span> configurations, including its name, image, system disk, data disks, VPC, NIC, security group, and <span id="EN-US_TOPIC_0017130261__text1950318107244">EIP</span>.</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>
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<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__b8330141310221"><span id="EN-US_TOPIC_0017130261__text1433051312215">Computing</span></strong>, click <strong id="EN-US_TOPIC_0017130261__b1033001312223">Elastic Cloud Server</strong>.<p id="EN-US_TOPIC_0017130261__p28383428216">The <strong id="EN-US_TOPIC_0017130261__b85561016131711">Elastic Cloud Server</strong> page is displayed. On this page, you can view your <span id="EN-US_TOPIC_0017130261__text1482614432912">ECS</span>s and the basic information about the <span id="EN-US_TOPIC_0017130261__text1330252917175">ECS</span>s, such as their private 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__b8330141310221"><span id="EN-US_TOPIC_0017130261__text1433051312215">Computing</span></strong>, click <strong id="EN-US_TOPIC_0017130261__b1033001312223">Elastic Cloud Server</strong>.<p id="EN-US_TOPIC_0017130261__p28383428216">The <strong id="EN-US_TOPIC_0017130261__b85561016131711">Elastic Cloud Server</strong> page is displayed. On this page, you can view your <span id="EN-US_TOPIC_0017130261__text11024513916">ECS</span>s and the basic information about the <span id="EN-US_TOPIC_0017130261__text1330252917175">ECS</span>s, such as their private IP addresses.</p>
</li><li id="EN-US_TOPIC_0017130261__li5741957114179">In the search box above the <span id="EN-US_TOPIC_0017130261__text16466347993">ECS</span> list, enter the <span id="EN-US_TOPIC_0017130261__text8946165115172">ECS</span> name, IP address, or ID, and click <span><img id="EN-US_TOPIC_0017130261__image13405105333511" src="en-us_image_0128851621.png"></span> for search. Alternatively, click <strong id="EN-US_TOPIC_0017130261__b4944133418426">Search by Tag</strong> above the upper right corner of the ECS list and search for an ECS by tag key and value.</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 modify <span id="EN-US_TOPIC_0017130261__text153151152693">ECS</span> configurations, for example, change its security group, add a NIC or tag to it, or bind an <span id="EN-US_TOPIC_0017130261__text13811637134719">EIP</span> to it, by clicking corresponding links or buttons.</p>
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<h1 class="topictitle1">Login Using an SSH Key</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 remotely log in to a Linux ECS using an SSH key pair from Windows and Linux, respectively.</p>
<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 remotely log in to a Linux ECS using an SSH key pair 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 Details About an ECS</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 the Linux ECS from Local Windows</h4><p id="EN-US_TOPIC_0017955380__p56166336111724">To log in to the Linux <span id="EN-US_TOPIC_0017955380__text9196132313143">ECS</span> from local Windows, perform the operations described in this section.</p>
<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 the Linux ECS from Local Windows Server</h4><p id="EN-US_TOPIC_0017955380__p56166336111724">To log in to the Linux <span id="EN-US_TOPIC_0017955380__text9196132313143">ECS</span> from local Windows, perform the operations described in this section.</p>
<p id="EN-US_TOPIC_0017955380__p49673096204924"><strong id="EN-US_TOPIC_0017955380__b842352706101120">Method 1: Use PuTTY to log in to the ECS.</strong></p>
<div class="p" id="EN-US_TOPIC_0017955380__p3507989320731">The following operations use PuTTY as an example. Before logging in to the <span id="EN-US_TOPIC_0017955380__text358192610140">ECS</span> using PuTTY, make sure that the private key file has been converted to .ppk format.<ol id="EN-US_TOPIC_0017955380__ol53179337111724"><li id="EN-US_TOPIC_0017955380__li5774252720735">Check whether the private key file has been converted to .ppk format.<ul id="EN-US_TOPIC_0017955380__ul3906000820958"><li id="EN-US_TOPIC_0017955380__li1599575920958">If yes, go to step <a href="#EN-US_TOPIC_0017955380__li40879966111724">7</a>.</li><li id="EN-US_TOPIC_0017955380__li5850240020107">If no, go to step <a href="#EN-US_TOPIC_0017955380__li8851985111724">2</a>.</li></ul>
</li><li id="EN-US_TOPIC_0017955380__li8851985111724"><a name="EN-US_TOPIC_0017955380__li8851985111724"></a><a name="li8851985111724"></a>Visit the following website and download PuTTY and PuTTYgen:<p id="EN-US_TOPIC_0017955380__p12559002111724"><a name="EN-US_TOPIC_0017955380__li8851985111724"></a><a name="li8851985111724"></a><a href="https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html" target="_blank" rel="noopener noreferrer">https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html</a></p>
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</li></ol>
</div>
<p id="EN-US_TOPIC_0017955380__p59947944205032"><strong id="EN-US_TOPIC_0017955380__b842352706102336">Method 2: Use Xshell to log in to the ECS.</strong></p>
<ol id="EN-US_TOPIC_0017955380__ol54723507205051"><li id="EN-US_TOPIC_0017955380__li58876908205051">Start the Xshell tool.</li><li id="EN-US_TOPIC_0017955380__li4831310620510">Run the following command using the <span id="EN-US_TOPIC_0017955380__text426816163483">EIP</span> to remotely log in to the <span id="EN-US_TOPIC_0017955380__text19680144951417">ECS</span> through SSH:<p id="EN-US_TOPIC_0017955380__p29511049205142"><strong id="EN-US_TOPIC_0017955380__b45299245984126">ssh</strong> <em id="EN-US_TOPIC_0017955380__i100180591784126">Username</em><strong id="EN-US_TOPIC_0017955380__b189555010184126">@</strong><em id="EN-US_TOPIC_0017955380__i49601693084126">EIP</em></p>
<ol id="EN-US_TOPIC_0017955380__ol54723507205051"><li id="EN-US_TOPIC_0017955380__li58876908205051">Start the Xshell tool.</li><li id="EN-US_TOPIC_0017955380__li4831310620510">Run the following command using the <span id="EN-US_TOPIC_0017955380__text426816163483">EIP</span> to remotely log in to the <span id="EN-US_TOPIC_0017955380__text19680144951417">ECS</span> through SSH:<p id="EN-US_TOPIC_0017955380__p29511049205142"><strong id="EN-US_TOPIC_0017955380__b1329075119127">ssh</strong> <em id="EN-US_TOPIC_0017955380__i43747441164643"><strong id="EN-US_TOPIC_0017955380__b66820451164643">Username</strong></em><strong id="EN-US_TOPIC_0017955380__b53881836164643">@<em id="EN-US_TOPIC_0017955380__i113013262529"><span id="EN-US_TOPIC_0017955380__text0607191575217">EIP</span></em></strong></p>
<div class="note" id="EN-US_TOPIC_0017955380__note833517545353"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0017955380__en-us_topic_0017955380_ul20706144145520"><li id="EN-US_TOPIC_0017955380__en-us_topic_0017955380_li3706349551">If a public image is used, see <em id="EN-US_TOPIC_0017955380__en-us_topic_0017955380_i1266614172017"><a href="https://docs.otc.t-systems.com/en-us/ims/index.html" target="_blank" rel="noopener noreferrer">Public Images Introduction</a></em> for the image username.</li><li id="EN-US_TOPIC_0017955380__en-us_topic_0017955380_li13706164145511">If a private image is used, use the username of the private image.</li></ul>
</div></div>
</li><li id="EN-US_TOPIC_0017955380__li65527645205310">(Optional) If the system displays the <strong id="EN-US_TOPIC_0017955380__b842352706103315">SSH Security Warning</strong> dialog box, click <strong id="EN-US_TOPIC_0017955380__b842352706103435">Accept &amp; Save</strong>.<div class="fignone" id="EN-US_TOPIC_0017955380__fig680319562495"><span class="figcap"><b>Figure 2 </b>SSH Security Warning</span><br><span><img id="EN-US_TOPIC_0017955380__image18772506254" src="en-us_image_0178475901.png"></span></div>
</li><li id="EN-US_TOPIC_0017955380__li56881900205338">Select <strong id="EN-US_TOPIC_0017955380__b842352706103545">Public Key</strong> and click <strong id="EN-US_TOPIC_0017955380__b84235270610371">Browse</strong> beside the user key text box.</li><li id="EN-US_TOPIC_0017955380__li10975823205436">In the user key dialog box, click <strong id="EN-US_TOPIC_0017955380__b842352706103758">Import</strong>.</li><li id="EN-US_TOPIC_0017955380__li612943622102">Select the locally stored key file and click <strong id="EN-US_TOPIC_0017955380__b842352706103847">Open</strong>.</li><li id="EN-US_TOPIC_0017955380__li26892298205533">Click <strong id="EN-US_TOPIC_0017955380__b1384755286">OK</strong> to log in to the <span id="EN-US_TOPIC_0017955380__text777655001419">ECS</span>.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0017955380__section3666784111724"><a name="EN-US_TOPIC_0017955380__section3666784111724"></a><a name="section3666784111724"></a><h4 class="sectiontitle">Logging In to the Linux ECS from Local Linux</h4><div class="p" id="EN-US_TOPIC_0017955380__p28574068111724">To log in to the Linux <span id="EN-US_TOPIC_0017955380__text0729145251416">ECS</span> from local Linux, perform the operations described in this section. The following operations use private key file <strong id="EN-US_TOPIC_0017955380__b184804218611">kp-123.pem</strong> as an example to log in to the ECS. The name of your private key file may differ.<ol id="EN-US_TOPIC_0017955380__ol55840023111724"><li id="EN-US_TOPIC_0017955380__li32798165111724">On the Linux CLI, run the following command to change operation permissions:<p id="EN-US_TOPIC_0017955380__p26748029111724"><a name="EN-US_TOPIC_0017955380__li32798165111724"></a><a name="li32798165111724"></a><strong id="EN-US_TOPIC_0017955380__b141829542515418">chmod 400 /</strong><em id="EN-US_TOPIC_0017955380__i119870989715418">path</em><strong id="EN-US_TOPIC_0017955380__b182456313515424">/kp-123</strong><strong id="EN-US_TOPIC_0017955380__b1356401439193047">.pem</strong></p>
<div class="section" id="EN-US_TOPIC_0017955380__section3666784111724"><a name="EN-US_TOPIC_0017955380__section3666784111724"></a><a name="section3666784111724"></a><h4 class="sectiontitle">Logging In to the Linux ECS from Local Linux Server</h4><div class="p" id="EN-US_TOPIC_0017955380__p28574068111724">To log in to the Linux <span id="EN-US_TOPIC_0017955380__text0729145251416">ECS</span> from local Linux, perform the operations described in this section. The following operations use private key file <strong id="EN-US_TOPIC_0017955380__b184804218611">kp-123.pem</strong> as an example to log in to the ECS. The name of your private key file may differ.<ol id="EN-US_TOPIC_0017955380__ol55840023111724"><li id="EN-US_TOPIC_0017955380__li32798165111724">On the Linux CLI, run the following command to change operation permissions:<p id="EN-US_TOPIC_0017955380__p26748029111724"><a name="EN-US_TOPIC_0017955380__li32798165111724"></a><a name="li32798165111724"></a><strong id="EN-US_TOPIC_0017955380__b141829542515418">chmod 400 /</strong><em id="EN-US_TOPIC_0017955380__i119870989715418">path</em><strong id="EN-US_TOPIC_0017955380__b182456313515424">/kp-123</strong><strong id="EN-US_TOPIC_0017955380__b1356401439193047">.pem</strong></p>
<div class="note" id="EN-US_TOPIC_0017955380__note19106747111724"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0017955380__p37743003111724">In the preceding command, <em id="EN-US_TOPIC_0017955380__i1681691002125432">path</em> refers to the path where the key file is saved.</p>
</div></div>
</li><li id="EN-US_TOPIC_0017955380__li4142714111724">Run the following command to log in to the <span id="EN-US_TOPIC_0017955380__text1087825831416">ECS</span>:<p id="EN-US_TOPIC_0017955380__p51016140103357"><strong id="EN-US_TOPIC_0017955380__b401815806193110">ssh -i /</strong><em id="EN-US_TOPIC_0017955380__i661579152193110">path</em><strong id="EN-US_TOPIC_0017955380__b498791878193128">/kp-123.pem</strong> <em id="EN-US_TOPIC_0017955380__i686495423193110">Default username</em><strong id="EN-US_TOPIC_0017955380__b187112095193110">@</strong><em id="EN-US_TOPIC_0017955380__i1350914876193110">EIP</em></p>
</li><li id="EN-US_TOPIC_0017955380__li4142714111724">Run the following command to log in to the <span id="EN-US_TOPIC_0017955380__text1087825831416">ECS</span>:<p id="EN-US_TOPIC_0017955380__p51016140103357"><strong id="EN-US_TOPIC_0017955380__b8935174191314">ssh -i /<em id="EN-US_TOPIC_0017955380__i393524161316">path</em>/kp-123.pem</strong> <em id="EN-US_TOPIC_0017955380__i17658378151627"><strong id="EN-US_TOPIC_0017955380__b46701284151627">Default username</strong></em><strong id="EN-US_TOPIC_0017955380__b7166428201240">@</strong><em id="EN-US_TOPIC_0017955380__i1779413984815"><strong id="EN-US_TOPIC_0017955380__b1951939114818"><span id="EN-US_TOPIC_0017955380__text14536992112">EIP</span></strong></em></p>
<p id="EN-US_TOPIC_0017955380__p34995982103441">For example, if the default username is <strong id="EN-US_TOPIC_0017955380__b1377156563">root</strong> and the <span id="EN-US_TOPIC_0017955380__text1187502510482">EIP</span> is <strong id="EN-US_TOPIC_0017955380__b18875984107">123.123.123.123</strong>, run the following command:</p>
<p id="EN-US_TOPIC_0017955380__p37284434111724"><strong id="EN-US_TOPIC_0017955380__b2680330715535">ssh -i /<em id="EN-US_TOPIC_0017955380__i15586111724">path</em>/kp-123.pem root@</strong><strong id="EN-US_TOPIC_0017955380__b1890475919385">123.123.123.123</strong></p>
<div class="note" id="EN-US_TOPIC_0017955380__note1262490111724"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0017955380__p5866139194411">In the preceding command:</p>

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<h1 class="topictitle1">Login Using an SSH Password</h1>
<div id="body1437214636583"><div class="section" id="EN-US_TOPIC_0017955633__section193261132111117"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0017955633__p1517515510167">This section describes how to remotely log in to a Linux ECS using an SSH password from Windows and Linux, respectively.</p>
<div id="body1437214636583"><div class="section" id="EN-US_TOPIC_0017955633__section193261132111117"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0017955633__p1517515510167">This section describes how to remotely log in to a Linux ECS using an SSH password from a Windows and a Linux server, respectively.</p>
<div class="notice" id="EN-US_TOPIC_0017955633__note411052861612"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0017955633__p3007142694710">Logging in to a Linux ECS using SSH password authentication is disabled by default. If you require password authentication, configure it after logging in to the ECS. To ensure system security, reset the common user password for logging in to the Linux ECS after configuring SSH password authentication.</p>
</div></div>
</div>
@ -35,7 +35,7 @@
</li><li id="EN-US_TOPIC_0017955633__li59789577112020">After the SSH connection to the ECS is set up, enter the username and password as prompted to log in to the ECS.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0017955633__section20811823174313"><a name="EN-US_TOPIC_0017955633__section20811823174313"></a><a name="section20811823174313"></a><h4 class="sectiontitle">Logging In to the Linux ECS from a Local Linux Server</h4><p id="EN-US_TOPIC_0017955633__p189302063719">To log in to the Linux ECS from a local Linux server, run the following command: </p>
<p id="EN-US_TOPIC_0017955633__p51649214112020"><strong id="EN-US_TOPIC_0017955633__b15695568191655">ssh</strong> <em id="EN-US_TOPIC_0017955633__i84235269716513">EIP bound to the ECS</em></p>
<p id="EN-US_TOPIC_0017955633__p51649214112020"><strong id="EN-US_TOPIC_0017955633__b13662192021315">ssh</strong> <strong id="EN-US_TOPIC_0017955633__b1105129394131"><em id="EN-US_TOPIC_0017955633__i2734100494130">EIP bound to the ECS</em></strong></p>
</div>
</div>
<div>

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<a name="EN-US_TOPIC_0018073215"></a><a name="EN-US_TOPIC_0018073215"></a>
<h1 class="topictitle1">Can I Attach Multiple Disks to an <span id="text15846110174913">ECS</span>?</h1>
<div id="body1437550181838"><div class="p" id="EN-US_TOPIC_0018073215__p344571522314">Yes. The <span id="EN-US_TOPIC_0018073215__text15574111132710">ECS</span>s created after the disk function upgrade can have up to 60 attached disks.<ul id="EN-US_TOPIC_0018073215__ul7272419192820"><li id="EN-US_TOPIC_0018073215__li5272121915280">When you create an <span id="EN-US_TOPIC_0018073215__text28301112102714">ECS</span>, you can attach 24 disks to it.</li><li id="EN-US_TOPIC_0018073215__li7158205414262">After you create an <span id="EN-US_TOPIC_0018073215__text1660935054615">ECS</span>, you can attach up to 60 disks to it.<p id="EN-US_TOPIC_0018073215__p5802154917504"></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0018073215__table134132505508" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Numbers of disks that can be attached to a newly created ECS</caption><thead align="left"><tr id="EN-US_TOPIC_0018073215__row1241375075017"><th align="left" class="cellrowborder" valign="top" width="18.6%" id="mcps1.3.1.2.2.3.2.5.1.1"><p id="EN-US_TOPIC_0018073215__p441365017507">ECS Type</p>
<div id="body1437550181838"><div class="p" id="EN-US_TOPIC_0018073215__p344571522314">Yes. The <span id="EN-US_TOPIC_0018073215__text15574111132710">ECS</span>s created after the disk function upgrade can have up to 60 attached disks.<ul id="EN-US_TOPIC_0018073215__ul7272419192820"><li id="EN-US_TOPIC_0018073215__li5272121915280">When you create an <span id="EN-US_TOPIC_0018073215__text28301112102714">ECS</span>, you can attach 24 disks to it.</li><li id="EN-US_TOPIC_0018073215__li7158205414262">After you create an <span id="EN-US_TOPIC_0018073215__text1660935054615">ECS</span>, you can attach up to 60 disks to it.
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0018073215__table134132505508" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Numbers of disks that can be attached to a newly created ECS</caption><thead align="left"><tr id="EN-US_TOPIC_0018073215__row1241375075017"><th align="left" class="cellrowborder" valign="top" width="18.6%" id="mcps1.3.1.2.2.2.2.5.1.1"><p id="EN-US_TOPIC_0018073215__p441365017507">ECS Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="16.07%" id="mcps1.3.1.2.2.3.2.5.1.2"><p id="EN-US_TOPIC_0018073215__p184133502504">Maximum VBD Disks</p>
<th align="left" class="cellrowborder" valign="top" width="16.07%" id="mcps1.3.1.2.2.2.2.5.1.2"><p id="EN-US_TOPIC_0018073215__p184133502504">Maximum VBD Disks</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="16.41%" id="mcps1.3.1.2.2.3.2.5.1.3"><p id="EN-US_TOPIC_0018073215__p13413150115018">Maximum SCSI Disks</p>
<th align="left" class="cellrowborder" valign="top" width="16.41%" id="mcps1.3.1.2.2.2.2.5.1.3"><p id="EN-US_TOPIC_0018073215__p13413150115018">Maximum SCSI Disks</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="48.92%" id="mcps1.3.1.2.2.3.2.5.1.4"><p id="EN-US_TOPIC_0018073215__p1241365025014">Constraint</p>
<th align="left" class="cellrowborder" valign="top" width="48.92%" id="mcps1.3.1.2.2.2.2.5.1.4"><p id="EN-US_TOPIC_0018073215__p1241365025014">Constraint</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0018073215__row8413205005018"><td class="cellrowborder" valign="top" width="18.6%" headers="mcps1.3.1.2.2.3.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p9413155019501">KVM</p>
<tbody><tr id="EN-US_TOPIC_0018073215__row8413205005018"><td class="cellrowborder" valign="top" width="18.6%" headers="mcps1.3.1.2.2.2.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p9413155019501">KVM</p>
<p id="EN-US_TOPIC_0018073215__p341385065013">(excluding D2 ECSs)</p>
</td>
<td class="cellrowborder" valign="top" width="16.07%" headers="mcps1.3.1.2.2.3.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p54131750145013">24</p>
<td class="cellrowborder" valign="top" width="16.07%" headers="mcps1.3.1.2.2.2.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p54131750145013">24</p>
</td>
<td class="cellrowborder" valign="top" width="16.41%" headers="mcps1.3.1.2.2.3.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p18413105011504">59</p>
<td class="cellrowborder" valign="top" width="16.41%" headers="mcps1.3.1.2.2.2.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p18413105011504">59</p>
</td>
<td class="cellrowborder" valign="top" width="48.92%" headers="mcps1.3.1.2.2.3.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p2413115045016">VBD disks + SCSI disks ≤ 60 (This constraint does not apply to local disks.)</p>
<p id="EN-US_TOPIC_0018073215__p341335020502">The number of local disks is determined based on the <span id="EN-US_TOPIC_0018073215__text1518108793">ECS</span> flavor.</p>
<td class="cellrowborder" valign="top" width="48.92%" headers="mcps1.3.1.2.2.2.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p2413115045016">VBD disks + SCSI disks ≤ 60 (This constraint does not apply to local disks.)</p>
<p id="EN-US_TOPIC_0018073215__p341335020502">The number of local disks is determined based on the <span id="EN-US_TOPIC_0018073215__text1798730048">ECS</span> flavor.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0018073215__row17413145010507"><td class="cellrowborder" valign="top" width="18.6%" headers="mcps1.3.1.2.2.3.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p3413050125016">D2</p>
<tr id="EN-US_TOPIC_0018073215__row17413145010507"><td class="cellrowborder" valign="top" width="18.6%" headers="mcps1.3.1.2.2.2.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p3413050125016">D2</p>
</td>
<td class="cellrowborder" valign="top" width="16.07%" headers="mcps1.3.1.2.2.3.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p13413150165016">24</p>
<td class="cellrowborder" valign="top" width="16.07%" headers="mcps1.3.1.2.2.2.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p13413150165016">24</p>
</td>
<td class="cellrowborder" valign="top" width="16.41%" headers="mcps1.3.1.2.2.3.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p141345010506">30</p>
<td class="cellrowborder" valign="top" width="16.41%" headers="mcps1.3.1.2.2.2.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p141345010506">30</p>
</td>
<td class="cellrowborder" valign="top" width="48.92%" headers="mcps1.3.1.2.2.3.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p64135501508">VBD disks + SCSI disks ≤ 54 (This constraint does not apply to local disks.)</p>
<p id="EN-US_TOPIC_0018073215__p17413550145015">The number of local disks is determined based on the <span id="EN-US_TOPIC_0018073215__text275181818">ECS</span> flavor.</p>
<td class="cellrowborder" valign="top" width="48.92%" headers="mcps1.3.1.2.2.2.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p64135501508">VBD disks + SCSI disks ≤ 54 (This constraint does not apply to local disks.)</p>
<p id="EN-US_TOPIC_0018073215__p17413550145015">The number of local disks is determined based on the <span id="EN-US_TOPIC_0018073215__text241702762">ECS</span> flavor.</p>
</td>
</tr>
</tbody>

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<h1 class="topictitle1">Can I Bind Multiple EIPs to an <span id="text141047105318">ECS</span>?</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">You can bind multiple EIPs to an <span id="EN-US_TOPIC_0018073216__text595081043120">ECS</span>. However, this configuration is not recommended.</p>
<p id="EN-US_TOPIC_0018073216__p19349519165733">To bind multiple EIPs to an ECS, you must manually configure routes.</p>
<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 you really need to bind multiple EIPs to an ECS, you must manually configure routing policies, which requires high network skills. Exercise caution when performing this operation.</p>
</div>
<div class="section" id="EN-US_TOPIC_0018073216__section32091531162222"><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>
@ -22,7 +22,7 @@
<td class="cellrowborder" valign="top" width="74.81%" headers="mcps1.3.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0018073216__p8777885163243">CentOS 6.5 64bit</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0018073216__row11892101163243"><td class="cellrowborder" valign="top" width="25.19%" headers="mcps1.3.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0018073216__p23736109163243">EIP</p>
<tr id="EN-US_TOPIC_0018073216__row11892101163243"><td class="cellrowborder" valign="top" width="25.19%" headers="mcps1.3.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0018073216__p23736109163243"><span id="EN-US_TOPIC_0018073216__text2378115753619">EIP</span></p>
</td>
<td class="cellrowborder" valign="top" width="74.81%" headers="mcps1.3.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0018073216__p43576653163243">2</p>
</td>
@ -51,7 +51,7 @@
<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__b1444089939">192.168.2.1</strong> is the gateway IP address of standby NIC <strong id="EN-US_TOPIC_0018073216__b64828729">eth1</strong>.</p>
<p id="EN-US_TOPIC_0018073216__p52517685164934">In the preceding command, <strong id="EN-US_TOPIC_0018073216__b190109942">192.168.2.1</strong> is the gateway IP address of standby NIC <strong id="EN-US_TOPIC_0018073216__b409055739">eth1</strong>.</p>
</li></ol>
</div>
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<div id="body1437661772647"></div>
<div>
<ul class="ullinks">
<li class="ulchildlink"><strong><a href="en-us_topic_0018073216.html">Can I Bind Multiple EIPs to an ECS?</a></strong><br>
<li class="ulchildlink"><strong><a href="en-us_topic_0018073216.html">Can Multiple EIPs Be Bound to an ECS?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0030013188.html">Can an ECS Without an EIP Access the Internet?</a></strong><br>
<li class="ulchildlink"><strong><a href="en-us_topic_0030013188.html">Can an ECS Without an EIP Bound Access the Internet?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0105130172.html">Why Can't an EIP Be Pinged?</a></strong><br>
</li>

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<h1 class="topictitle1">Why Does an Authentication Failure Occurs After I Attempt to Remotely Log In to a Windows ECS?</h1>
<div id="body1438216771584"><div class="section" id="EN-US_TOPIC_0018339851__section142338358917"><h4 class="sectiontitle">Symptom</h4><p id="EN-US_TOPIC_0018339851__p17625338093">When a local computer running Windows attempts to access a Windows <span id="EN-US_TOPIC_0018339851__text1572112818383">ECS</span> using RDP (for example, MSTSC), an identity authentication failure occurs and the desired function is not supported.</p>
<ul id="EN-US_TOPIC_0018339851__ul147821152174920"><li id="EN-US_TOPIC_0018339851__li17822052124915">If the error message contains only the information that an identity authentication failure occurs and that the desired function is not supported, rectify the fault by following the instructions provided in <a href="#EN-US_TOPIC_0018339851__section9947102411203">Solution</a>.</li><li id="EN-US_TOPIC_0018339851__li107821052184912">If the error message shows that the fault was caused by "CredSSP Encryption Oracle Remediation", as shown in <a href="#EN-US_TOPIC_0018339851__fig18932134871212">Figure 1</a>, the fault may be caused by a security patch released by Microsoft in March 2018. This patch may affect RDP-based CredSSP connections. As a result, setting up RDP-based connections to <span id="EN-US_TOPIC_0018339851__text20735113415385">ECS</span>s failed. Rectify the fault by following the instructions provided in <a href="https://support.microsoft.com/en-us/topic/credssp-updates-for-cve-2018-0886-5cbf9e5f-dc6d-744f-9e97-7ba400d6d3ea" target="_blank" rel="noopener noreferrer">Microsoft documents</a>.<div class="fignone" id="EN-US_TOPIC_0018339851__fig18932134871212"><a name="EN-US_TOPIC_0018339851__fig18932134871212"></a><a name="fig18932134871212"></a><span class="figcap"><b>Figure 1 </b>Failed to set up a remote desktop connection</span><br><span><img id="EN-US_TOPIC_0018339851__image12932114801211" src="en-us_image_0117334497.png"></span></div>
<ul id="EN-US_TOPIC_0018339851__ul147821152174920"><li id="EN-US_TOPIC_0018339851__li17822052124915">If the error message contains only the information that an identity authentication failure occurs and that the desired function is not supported, rectify the fault by following the instructions provided in <a href="#EN-US_TOPIC_0018339851__section9947102411203">Solution</a>.</li><li id="EN-US_TOPIC_0018339851__li107821052184912">If the error message shows that the fault was caused by "CredSSP Encryption Oracle Remediation", as shown in <a href="#EN-US_TOPIC_0018339851__fig18932134871212">Figure 1</a>, the fault may be caused by a security patch released by Microsoft in March 2018. This patch may affect RDP-based CredSSP connections. As a result, setting up RDP-based connections to <span id="EN-US_TOPIC_0018339851__text20735113415385">ECS</span>s failed. Rectify the fault by following the instructions provided in <a href="https://support.microsoft.com/en-us/help/4093492/credssp-updates-for-cve-2018-0886-march-13-2018" target="_blank" rel="noopener noreferrer">official Microsoft document</a>.<div class="fignone" id="EN-US_TOPIC_0018339851__fig18932134871212"><a name="EN-US_TOPIC_0018339851__fig18932134871212"></a><a name="fig18932134871212"></a><span class="figcap"><b>Figure 1 </b>Failed to set up a remote desktop connection</span><br><span><img id="EN-US_TOPIC_0018339851__image12932114801211" src="en-us_image_0117334497.png"></span></div>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0018339851__section9947102411203"><a name="EN-US_TOPIC_0018339851__section9947102411203"></a><a name="section9947102411203"></a><h4 class="sectiontitle">Solution</h4><p id="EN-US_TOPIC_0018339851__p466323910257">Modify the remote desktop connection settings on the Windows <span id="EN-US_TOPIC_0018339851__text1840119353311">ECS</span>:</p>

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@ -28,7 +28,7 @@ Windows fully (no hibernation or fast restarting), or mount the volume
read-only with the 'ro' mount option.</pre>
<p id="EN-US_TOPIC_0021426802__p1887312119392">Back up the disk data, run the following command to rectify the NTFS file system inconsistency, and attach the system disk:</p>
<p id="EN-US_TOPIC_0021426802__p17152203304912"><strong id="EN-US_TOPIC_0021426802__b1573769891153243">ntfsfix /dev/</strong><em id="EN-US_TOPIC_0021426802__i828149149153243">Result obtained in step <a href="#EN-US_TOPIC_0021426802__li20334892202157">2.a</a></em></p>
<p id="EN-US_TOPIC_0021426802__p1115263314917">For example, if the result obtained in step <a href="#EN-US_TOPIC_0021426802__li20334892202157">2.a</a> is <strong id="EN-US_TOPIC_0021426802__b838481404">xvde2</strong>, run the following command:</p>
<p id="EN-US_TOPIC_0021426802__p1115263314917">For example, if the result obtained in step <a href="#EN-US_TOPIC_0021426802__li20334892202157">2.a</a> is <strong id="EN-US_TOPIC_0021426802__b1223039839">xvde2</strong>, run the following command:</p>
<p id="EN-US_TOPIC_0021426802__p0152173394910"><strong id="EN-US_TOPIC_0021426802__b1715213364915">ntfsfix /dev/xvde2</strong></p>
</li></ol>
</li><li id="EN-US_TOPIC_0021426802__li11815752105716">Change the password and clear the original password.<ol type="a" id="EN-US_TOPIC_0021426802__ol50424782201550"><li id="EN-US_TOPIC_0021426802__li62607680202157">Run the following command to back up the SAM file:<p id="EN-US_TOPIC_0021426802__p26598214202157"><a name="EN-US_TOPIC_0021426802__li62607680202157"></a><a name="li62607680202157"></a><strong id="EN-US_TOPIC_0021426802__b38057335202157">cp /mnt/Windows/System32/config/SAM /mnt/Windows/System32/config/SAM.bak</strong></p>

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@ -1,6 +1,6 @@
<a name="EN-US_TOPIC_0021427650"></a><a name="EN-US_TOPIC_0021427650"></a>
<h1 class="topictitle1">Resetting the Password for Logging In to a Linux <span id="text1081995211543">ECS</span></h1>
<h1 class="topictitle1">Resetting the Password for Logging In to a Linux <span id="text19414943181314">ECS</span></h1>
<div id="body1446517288090"><div class="section" id="EN-US_TOPIC_0021427650__section17131859112916"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0021427650__en-us_topic_0021426802_p557120821469">Keep your password secure. Reset the password if:</p>
<ul id="EN-US_TOPIC_0021427650__en-us_topic_0021426802_ul31424087214650"><li id="EN-US_TOPIC_0021427650__en-us_topic_0021426802_li58960965214655">The password is forgotten.</li><li id="EN-US_TOPIC_0021427650__en-us_topic_0021426802_li1617885210014">The password has expired.</li></ul>
<p id="EN-US_TOPIC_0021427650__en-us_topic_0021426802_p58571173516">This section describes how to reset the password of user <strong id="EN-US_TOPIC_0021427650__b48217366535">root</strong>. After resetting the password, you can log in to the <span id="EN-US_TOPIC_0021427650__text11829143615537">ECS</span>, and change the private key or reset the password of a non-<strong id="EN-US_TOPIC_0021427650__b1283053615310">root</strong> user.</p>
@ -13,7 +13,8 @@
</div></div>
</li><li id="EN-US_TOPIC_0021427650__li5640121684418"><a name="EN-US_TOPIC_0021427650__li5640121684418"></a><a name="li5640121684418"></a>Locate the row containing the system disk to be detached and click <strong id="EN-US_TOPIC_0021427650__b12274302104828">Detach</strong> to detach the system disk from the ECS.</li><li id="EN-US_TOPIC_0021427650__li7640161614443">On the page providing details about the temporary <span id="EN-US_TOPIC_0021427650__text1769813125342">ECS</span>, click the <strong id="EN-US_TOPIC_0021427650__b137031612123415">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021427650__li10640916124410">Click <strong id="EN-US_TOPIC_0021427650__b842352706112645">Attach Disk</strong>. In the displayed dialog box, select the system disk detached in step <a href="#EN-US_TOPIC_0021427650__li5640121684418">2.b</a> and attach it to the temporary ECS.</li></ol>
</li><li id="EN-US_TOPIC_0021427650__li676194525819">Log in to the temporary <span id="EN-US_TOPIC_0021427650__text15656171252116">ECS</span> remotely and reset the password.<ol type="a" id="EN-US_TOPIC_0021427650__ol1664081674412"><li id="EN-US_TOPIC_0021427650__li156401416124411">Locate the row containing the temporary <span id="EN-US_TOPIC_0021427650__text721719135217">ECS</span> and click <strong id="EN-US_TOPIC_0021427650__b1928191753511">Remote Login</strong> in the <strong id="EN-US_TOPIC_0021427650__b7569820203518">Operation</strong> column.</li><li id="EN-US_TOPIC_0021427650__li664021617445"><a name="EN-US_TOPIC_0021427650__li664021617445"></a><a name="li664021617445"></a>Run the following command to view the directory of the system disk detached from the original Linux <span id="EN-US_TOPIC_0021427650__text128003139216">ECS</span> now attached to the temporary <span id="EN-US_TOPIC_0021427650__text0483038133518">ECS</span>:<p id="EN-US_TOPIC_0021427650__p2640216174418"><strong id="EN-US_TOPIC_0021427650__b15640916174415">fdisk -l</strong></p>
</li><li id="EN-US_TOPIC_0021427650__li1964051624414">Run the following commands in the directory where the script is stored to run the script for resetting the password:<p id="EN-US_TOPIC_0021427650__p564061617440"><a name="EN-US_TOPIC_0021427650__li1964051624414"></a><a name="li1964051624414"></a><strong id="EN-US_TOPIC_0021427650__b156401316124413">chmod +x changepasswd.sh</strong></p>
<div class="fignone" id="EN-US_TOPIC_0021427650__fig12672182133917"><span class="figcap"><b>Figure 1 </b>Viewing the directory of the system disk</span><br><span><img id="EN-US_TOPIC_0021427650__image126729273912" src="en-us_image_0000001384584706.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0021427650__li1964051624414">Run the following commands in the directory where the <strong id="EN-US_TOPIC_0021427650__b151218184117">changepasswd.sh</strong> script is stored to run the script for resetting the password:<p id="EN-US_TOPIC_0021427650__p564061617440"><strong id="EN-US_TOPIC_0021427650__b156401316124413">chmod +x changepasswd.sh</strong></p>
<p id="EN-US_TOPIC_0021427650__p4640141611443"><strong id="EN-US_TOPIC_0021427650__b16401816134413">./changepasswd.sh</strong></p>
<p id="EN-US_TOPIC_0021427650__p1164012165444">When you run the password reset script, if the system displays a message indicating that there is no command related to logical volume manager (LVM), such as the message "no lvs command", install an LVM tool on the temporary <span id="EN-US_TOPIC_0021427650__text53227519121">ECS</span>. The LVM2 tool is recommended, which can be installed by running the <strong id="EN-US_TOPIC_0021427650__b8323145141216">yum install lvm2</strong> command.</p>
<div class="note" id="EN-US_TOPIC_0021427650__note11224173912520"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0021427650__p1464051604416">If the original <span id="EN-US_TOPIC_0021427650__text586431511218">ECS</span> and the temporary <span id="EN-US_TOPIC_0021427650__text115541554360">ECS</span> both run CentOS 7, a mount failure may occur during script execution. To resolve this issue, replace <strong id="EN-US_TOPIC_0021427650__b842352706173045">mount $dev $mountPath</strong> with <strong id="EN-US_TOPIC_0021427650__b842352706173058">mount -o nouuid $dev $mountPath</strong> in the script.</p>
@ -27,7 +28,7 @@
</li><li id="EN-US_TOPIC_0021427650__li17168154265617">Change <strong id="EN-US_TOPIC_0021427650__b7512121313119">PermitRootLogin no</strong> to <strong id="EN-US_TOPIC_0021427650__b13201131713114">PermitRootLogin yes</strong>.<p id="EN-US_TOPIC_0021427650__p27713442561">Alternatively, delete the comment tag (#) before <strong id="EN-US_TOPIC_0021427650__b1368162111119">PermitRootLogin yes</strong>.</p>
</li><li id="EN-US_TOPIC_0021427650__li875859105919">Change the value of <strong id="EN-US_TOPIC_0021427650__b267464515114">AllowUsers</strong> to <strong id="EN-US_TOPIC_0021427650__b9363258517">root</strong>.<p id="EN-US_TOPIC_0021427650__p1443514104116">Search for <strong id="EN-US_TOPIC_0021427650__b107175611310">AllowUsers</strong> in the file. If <strong id="EN-US_TOPIC_0021427650__b157110562031">AllowUsers</strong> is unavailable, add it at the end of the file.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0021427650__li43791402591">Stop the temporary <span id="EN-US_TOPIC_0021427650__text119171718218">ECS</span>, detach the system disk, attach the system disk to the original Linux <span id="EN-US_TOPIC_0021427650__text11751134103714">ECS</span>, and restart the original Linux <span id="EN-US_TOPIC_0021427650__text5682103773718">ECS</span>.<ol type="a" id="EN-US_TOPIC_0021427650__ol166409160448"><li id="EN-US_TOPIC_0021427650__li10640201613447">Stop the temporary <span id="EN-US_TOPIC_0021427650__text14944171882117">ECS</span>, switch to the page providing details about the <span id="EN-US_TOPIC_0021427650__text1125615419377">ECS</span>, and click the <strong id="EN-US_TOPIC_0021427650__b1160311163815">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021427650__li964031614447"><a name="EN-US_TOPIC_0021427650__li964031614447"></a><a name="li964031614447"></a>Click <strong id="EN-US_TOPIC_0021427650__b842352706163715">Detach</strong> to detach the data disk attached in step <a href="#EN-US_TOPIC_0021427650__li19814359584">2</a>.</li><li id="EN-US_TOPIC_0021427650__li18640151664410">On the page providing details about the original Linux <span id="EN-US_TOPIC_0021427650__text51188503815">ECS</span>, click the <strong id="EN-US_TOPIC_0021427650__b712475113816">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021427650__li2064071618440">Click <strong id="EN-US_TOPIC_0021427650__b842352706163842">Attach Disk</strong>. In the displayed dialog box, select the data disk detached in step <a href="#EN-US_TOPIC_0021427650__li964031614447">5.b</a> and device name <strong id="EN-US_TOPIC_0021427650__b182401343117593">/dev/sda</strong>.</li><li id="EN-US_TOPIC_0021427650__li0640316124412">Restart the original Linux <span id="EN-US_TOPIC_0021427650__text289020202118">ECS</span>.</li></ol>
</li><li id="EN-US_TOPIC_0021427650__li43791402591">Stop the temporary <span id="EN-US_TOPIC_0021427650__text119171718218">ECS</span>, detach the system disk, attach the system disk to the original Linux <span id="EN-US_TOPIC_0021427650__text11751134103714">ECS</span>, and restart the original Linux <span id="EN-US_TOPIC_0021427650__text5682103773718">ECS</span>.<ol type="a" id="EN-US_TOPIC_0021427650__ol166409160448"><li id="EN-US_TOPIC_0021427650__li10640201613447">Stop the temporary <span id="EN-US_TOPIC_0021427650__text14944171882117">ECS</span>, switch to the page providing details about the <span id="EN-US_TOPIC_0021427650__text1125615419377">ECS</span>, and click the <strong id="EN-US_TOPIC_0021427650__b1160311163815">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021427650__li964031614447"><a name="EN-US_TOPIC_0021427650__li964031614447"></a><a name="li964031614447"></a>Click <strong id="EN-US_TOPIC_0021427650__b842352706163715">Detach</strong> to detach the data disk attached in step <a href="#EN-US_TOPIC_0021427650__li19814359584">2</a>.</li><li id="EN-US_TOPIC_0021427650__li18640151664410">On the page providing details about the original Linux <span id="EN-US_TOPIC_0021427650__text51188503815">ECS</span>, click the <strong id="EN-US_TOPIC_0021427650__b712475113816">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021427650__li2064071618440">Click <strong id="EN-US_TOPIC_0021427650__b04105527398">Attach Disk</strong>. In the displayed dialog box, select the data disk detached in <a href="#EN-US_TOPIC_0021427650__li964031614447">5.b</a>.</li><li id="EN-US_TOPIC_0021427650__li0640316124412">Restart the original Linux <span id="EN-US_TOPIC_0021427650__text289020202118">ECS</span>.</li></ol>
</li></ol>
</div>
</div>
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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>
</div>
<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__b12190175781214"><span id="EN-US_TOPIC_0024911405__text219018570129">Computing</span></strong>, click <strong id="EN-US_TOPIC_0024911405__b1619012572127">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0024911405__li1085462314256">Locate the row containing the target <span id="EN-US_TOPIC_0024911405__text615091615218">ECS</span>. Click <strong id="EN-US_TOPIC_0024911405__b18151716152119">More</strong> in the <strong id="EN-US_TOPIC_0024911405__b5151111622111">Operation</strong> column and select <strong id="EN-US_TOPIC_0024911405__b5222101584415">Manage Image/Disk</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b1315161615214">Reinstall OS</strong>.<p id="EN-US_TOPIC_0024911405__p3854122302512">Only stopped <span id="EN-US_TOPIC_0024911405__text63993291215">ECS</span>s support OS reinstallation. If the <span id="EN-US_TOPIC_0024911405__text512812372212">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">Encryption</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 permission, assign the KMS access permissions to EVS. If you do not have the permission, contact the user having the security administrator rights to assign the KMS access permissions. For more details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a> </p>
</li><li id="EN-US_TOPIC_0024911405__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0024911405__b67851632192510">Encryption</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 permission, assign the KMS access permissions to EVS. If you do not have the permission, contact the user having the security administrator rights 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>
<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_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_li5286191313611"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b84235270615143">Xrole Name: EVSAccessKMS</strong>: specifies 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_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_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_en-us_topic_0013859510_b84235270615143">Xrole Name: EVSAccessKMS</strong>: specifies 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 Type</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">Configure 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>
@ -22,7 +22,7 @@
</div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0024911405__section12556769105440"><h4 class="sectiontitle">Follow-up Procedure</h4><p id="EN-US_TOPIC_0024911405__p28023873143318">If the reinstallation is unsuccessful, perform steps <a href="#EN-US_TOPIC_0024911405__li20776247143354">3</a> to <a href="#EN-US_TOPIC_0024911405__li31062819143541">9</a> again to retry reinstalling the OS again.</p>
<div class="section" id="EN-US_TOPIC_0024911405__section12556769105440"><h4 class="sectiontitle">Follow-up Procedure</h4><p id="EN-US_TOPIC_0024911405__p28023873143318">If the reinstallation is unsuccessful, perform steps <a href="#EN-US_TOPIC_0024911405__li20776247143354">3</a> to <a href="#EN-US_TOPIC_0024911405__li31062819143541">9</a> again to retry the OS installation.</p>
<p id="EN-US_TOPIC_0024911405__p28308785143318">If the second reinstallation attempt is unsuccessful, contact customer service for manual recovery at the backend.</p>
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<h1 class="topictitle1">Can I Select Another OS During ECS OS Reinstallation?</h1>
<div id="body1453949791319"><p id="EN-US_TOPIC_0024912311__p1070245115815">No. You can use only the original image of the ECS to reinstall the OS. You need to use a new image if you want to change the OS. For details, see <a href="en-us_topic_0031523135.html">Changing the OS</a>.</p>
<div id="body1453949791319"><p id="EN-US_TOPIC_0024912311__p1070245115815">No. You can use only the original image of the ECS to reinstall the OS. To use a new system image, see <a href="en-us_topic_0031523135.html">Changing the OS</a>.</p>
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<h1 class="topictitle1">Enabling Internet Connectivity for an <span id="text123765419131">ECS</span> Without an EIP</h1>
<div id="body1457574115625"><div class="section" id="EN-US_TOPIC_0027157850__section6427533194453"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0027157850__p6524555495935">To ensure platform security and conserve EIPs, EIPs are assigned only to specified <span id="EN-US_TOPIC_0027157850__text1545011314395">ECS</span>s. <span id="EN-US_TOPIC_0027157850__text11886342077">ECS</span>s without EIPs cannot access the Internet directly. If these ECSs need to access the Internet (for example, to perform a software upgrade or install a patch), you can select an ECS with an EIP bound to function as a proxy ECS, providing an access channel for these ECSs.</p>
<div class="note" id="EN-US_TOPIC_0027157850__note133331220133410"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0027157850__p19333520143410">NAT Gateway is recommended, which provides both the SNAT and DNAT functions for your <span id="EN-US_TOPIC_0027157850__text19249736143915">ECS</span>s in a VPC and allows the <span id="EN-US_TOPIC_0027157850__text11698155411811">ECS</span>s to access or provide services accessible from the Internet. </p>
<div class="note" id="EN-US_TOPIC_0027157850__note133331220133410"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0027157850__p19333520143410">NAT Gateway is recommended, which provides both the SNAT and DNAT functions for your <span id="EN-US_TOPIC_0027157850__text19249736143915">ECS</span>s in a VPC and allows the <span id="EN-US_TOPIC_0027157850__text11698155411811">ECS</span>s to access or provide services accessible from the Internet. For details, see <a href="https://docs.otc.t-systems.com/usermanual/nat/nat_pro_0000.html" target="_blank" rel="noopener noreferrer">NAT Gateway User Guide</a>.</p>
</div></div>
</div>
<div class="section" id="EN-US_TOPIC_0027157850__section2608915610029"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0027157850__ul57147806103027"><li id="EN-US_TOPIC_0027157850__li5394806103027">A proxy <span id="EN-US_TOPIC_0027157850__text15137193753916">ECS</span> with an EIP bound is available.</li><li id="EN-US_TOPIC_0027157850__li43600437114252">The IP address of the proxy <span id="EN-US_TOPIC_0027157850__text1698539203918">ECS</span> is in the same network and same security group as the <span id="EN-US_TOPIC_0027157850__text3883204613918">ECS</span>s that need to access the Internet.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0027157850__section6907807103042"><h4 class="sectiontitle">Linux Proxy <span id="EN-US_TOPIC_0027157850__text11280191042018">ECS</span></h4><p id="EN-US_TOPIC_0027157850__p96322674819">In this example, the proxy <span id="EN-US_TOPIC_0027157850__text120563515207">ECS</span> runs CentOS 6.5.</p>
<ol id="EN-US_TOPIC_0027157850__ol33320884113959"><li id="EN-US_TOPIC_0027157850__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0027157850__li464234814566">Click <span><img id="EN-US_TOPIC_0027157850__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_0027157850__li46924084113959">Under <strong id="EN-US_TOPIC_0027157850__b2067314412401"><span id="EN-US_TOPIC_0027157850__text186731346406">Computing</span></strong>, click <strong id="EN-US_TOPIC_0027157850__b167419410405">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0027157850__li42754441113959">In the search box above the upper right corner of the <span id="EN-US_TOPIC_0027157850__text6178154220399">ECS</span> list, enter the proxy <span id="EN-US_TOPIC_0027157850__text6468125715118">ECS</span> name for search.</li><li id="EN-US_TOPIC_0027157850__li49245655113959">Click the name of the proxy <span id="EN-US_TOPIC_0027157850__text10882134212391">ECS</span>. The page providing details about the <span id="EN-US_TOPIC_0027157850__text1799143012106">ECS</span> is displayed.</li><li id="EN-US_TOPIC_0027157850__li38671581113959">Click the <strong id="EN-US_TOPIC_0027157850__b84235270618429">Network Interfaces</strong> tab and then <span><img id="EN-US_TOPIC_0027157850__image16740174871" src="en-us_image_0128851717.png"></span>. Then, disable <strong id="EN-US_TOPIC_0027157850__b84235270618529">Source/Destination Check</strong>.<p id="EN-US_TOPIC_0027157850__p1846151153411">By default, the source/destination check function is enabled. When this function is enabled, the system checks whether source IP addresses contained in the packets sent by <span id="EN-US_TOPIC_0027157850__text159541444113919">ECS</span>s are correct. If the IP addresses are incorrect, the system does not allow the <span id="EN-US_TOPIC_0027157850__text16431453151110">ECS</span>s to send the packets. This mechanism prevents packet spoofing, thereby improving system security. However, this mechanism prevents the packet sender from receiving returned packets. Therefore, disable the source/destination check.</p>
<ol id="EN-US_TOPIC_0027157850__ol33320884113959"><li id="EN-US_TOPIC_0027157850__li3490190117228">Log in to the management console.</li><li id="EN-US_TOPIC_0027157850__li464234814566">Click <span><img id="EN-US_TOPIC_0027157850__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_0027157850__li46924084113959">Under <strong id="EN-US_TOPIC_0027157850__b2067314412401"><span id="EN-US_TOPIC_0027157850__text186731346406">Computing</span></strong>, click <strong id="EN-US_TOPIC_0027157850__b167419410405">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0027157850__li42754441113959">In the search box above the upper right corner of the <span id="EN-US_TOPIC_0027157850__text6178154220399">ECS</span> list, enter the proxy <span id="EN-US_TOPIC_0027157850__text6468125715118">ECS</span> name for search.</li><li id="EN-US_TOPIC_0027157850__li49245655113959">Click the name of the proxy <span id="EN-US_TOPIC_0027157850__text10882134212391">ECS</span>. The page providing details about the <span id="EN-US_TOPIC_0027157850__text1799143012106">ECS</span> is displayed.</li><li id="EN-US_TOPIC_0027157850__li38671581113959">On the <strong id="EN-US_TOPIC_0027157850__b78521213111813">Network Interfaces</strong> tab, click <span><img id="EN-US_TOPIC_0027157850__image16740174871" src="en-us_image_0128851717.png"></span>. Then, disable <strong id="EN-US_TOPIC_0027157850__b78601113161816">Source/Destination Check</strong>.<p id="EN-US_TOPIC_0027157850__p1846151153411">By default, the source/destination check function is enabled. When this function is enabled, the system checks whether source IP addresses contained in the packets sent by <span id="EN-US_TOPIC_0027157850__text159541444113919">ECS</span>s are correct. If the IP addresses are incorrect, the system does not allow the <span id="EN-US_TOPIC_0027157850__text16431453151110">ECS</span>s to send the packets. This mechanism prevents packet spoofing, thereby improving system security. However, this mechanism prevents the packet sender from receiving returned packets. Therefore, disable the source/destination check.</p>
</li><li id="EN-US_TOPIC_0027157850__li5860308113959">Log in to the proxy <span id="EN-US_TOPIC_0027157850__text7842746163912">ECS</span>.<p id="EN-US_TOPIC_0027157850__p45390388113959">For more details, see <a href="en-us_topic_0013771089.html">Login Overview</a>.</p>
</li><li id="EN-US_TOPIC_0027157850__li32041953113959">Run the following command to check whether the proxy <span id="EN-US_TOPIC_0027157850__text525035053916">ECS</span> can access the Internet:<p id="EN-US_TOPIC_0027157850__p4922924113959"><strong id="EN-US_TOPIC_0027157850__b52742774113959">ping www.google.com</strong></p>
<p id="EN-US_TOPIC_0027157850__p44306317113959">The proxy <span id="EN-US_TOPIC_0027157850__text12634115123917">ECS</span> can access the Internet if information similar to the following is displayed:</p>
@ -39,7 +39,7 @@
</li><li id="EN-US_TOPIC_0027157850__li47056383113959">Run the following command to 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 1</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 1 </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__b782678548"><span id="EN-US_TOPIC_0027157850__text159160124215">Network</span></strong>, click <strong id="EN-US_TOPIC_0027157850__b1145158893">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. On the displayed page, click a VPC which a route is to be added to. 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__b1055789097">Destination</strong>: indicates the destination network segment. The default value is <strong id="EN-US_TOPIC_0027157850__b1527561505">0.0.0.0/0</strong>.</li><li id="EN-US_TOPIC_0027157850__li43337918113959"><strong id="EN-US_TOPIC_0027157850__b1109805267">Next Hop</strong>: indicates the private IP address of the SNAT <span id="EN-US_TOPIC_0027157850__text1979372535">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__b603523229"><span id="EN-US_TOPIC_0027157850__text159160124215">Network</span></strong>, click <strong id="EN-US_TOPIC_0027157850__b1826514763">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. On the displayed page, click a VPC which a route is to be added to. 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__b1895292621">Destination</strong>: indicates the destination network segment. The default value is <strong id="EN-US_TOPIC_0027157850__b1647309238">0.0.0.0/0</strong>.</li><li id="EN-US_TOPIC_0027157850__li43337918113959"><strong id="EN-US_TOPIC_0027157850__b962886197">Next Hop</strong>: indicates the private IP address of the SNAT <span id="EN-US_TOPIC_0027157850__text1529794058">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">To delete the added iptables rules, run the following command:<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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<h1 class="topictitle1">Monitoring <span id="text1861139112010">ECS</span>s</h1>
<div id="body1457936833743"><p id="EN-US_TOPIC_0027371529__p63724626201225">Monitoring is key for ensuring <span id="EN-US_TOPIC_0027371529__text10546105914418">ECS</span> performance, reliability, and availability. Using monitored data, you can determine <span id="EN-US_TOPIC_0027371529__text12637154012186">ECS</span> resource utilization. The cloud service platform provides Cloud Eye to help you obtain the running statuses of your <span id="EN-US_TOPIC_0027371529__text39081064216">ECS</span>s. You can use Cloud Eye to automatically monitor <span id="EN-US_TOPIC_0027371529__text1249019110424">ECS</span>s in real time and manage alarms and notifications to keep track of <span id="EN-US_TOPIC_0027371529__text1314133651914">ECS</span> performance metrics.</p>
<div id="body1457936833743"><p id="EN-US_TOPIC_0027371529__p63724626201225">Monitoring is key for ensuring <span id="EN-US_TOPIC_0027371529__text10546105914418">ECS</span> performance, reliability, and availability. Using monitored data, you can determine <span id="EN-US_TOPIC_0027371529__text12637154012186">ECS</span> resource utilization. The cloud platform provides Cloud Eye to help you obtain the running statuses of your <span id="EN-US_TOPIC_0027371529__text39081064216">ECS</span>s. You can use Cloud Eye to automatically monitor <span id="EN-US_TOPIC_0027371529__text1249019110424">ECS</span>s in real time and manage alarms and notifications to keep track of <span id="EN-US_TOPIC_0027371529__text1314133651914">ECS</span> performance metrics.</p>
<p id="EN-US_TOPIC_0027371529__p26987325222523">This section covers the following content:</p>
<ul id="EN-US_TOPIC_0027371529__ul36154885222527"><li id="EN-US_TOPIC_0027371529__li3416595223128">Viewing basic <span id="EN-US_TOPIC_0027371529__text13841142104219">ECS</span> metrics</li><li id="EN-US_TOPIC_0027371529__li59315067222540">Customizing <span id="EN-US_TOPIC_0027371529__text4506454215">ECS</span> alarm rules</li><li id="EN-US_TOPIC_0027371529__li55633920222617">Viewing <span id="EN-US_TOPIC_0027371529__text7643046420">ECS</span> running statuses for routine monitoring</li></ul>
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<a name="EN-US_TOPIC_0027371530"></a><a name="EN-US_TOPIC_0027371530"></a>
<h1 class="topictitle1">Viewing ECS Metrics</h1>
<div id="body1457936836850"><div class="section" id="EN-US_TOPIC_0027371530__section11121260224613"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0027371530__p5347899515186">The public cloud platform provides Cloud Eye, which monitors the running statuses of your <span id="EN-US_TOPIC_0027371530__text96741514194413">ECS</span>s. You can obtain the monitoring metrics of each <span id="EN-US_TOPIC_0027371530__text245821517446">ECS</span> on the management console.</p>
<div id="body1457936836850"><div class="section" id="EN-US_TOPIC_0027371530__section11121260224613"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0027371530__p5347899515186">The cloud platform provides Cloud Eye, which monitors the running statuses of your <span id="EN-US_TOPIC_0027371530__text96741514194413">ECS</span>s. You can obtain the monitoring metrics of each <span id="EN-US_TOPIC_0027371530__text48882166414">ECS</span> on the management console.</p>
</div>
<p id="EN-US_TOPIC_0027371530__p13829195064010">There a short time delay between transmission and display of monitoring data. The status of an ECS displayed on Cloud Eye is the status obtained 5 to 10 minutes before. If an ECS is just created, wait for 5 to 10 minutes to view the real-time monitoring data.</p>
<div class="section" id="EN-US_TOPIC_0027371530__section8439794224022"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0027371530__ul3164004322451"><li id="EN-US_TOPIC_0027371530__li7011943212653">The <span id="EN-US_TOPIC_0027371530__text062781814449">ECS</span> is running properly.<p id="EN-US_TOPIC_0027371530__p48867272212653">Cloud Eye does not display the monitoring data for a stopped, faulty, or deleted <span id="EN-US_TOPIC_0027371530__text20410919204419">ECS</span>. After such an <span id="EN-US_TOPIC_0027371530__text53705205445">ECS</span> restarts or recovers, the monitoring data is available in Cloud Eye.</p>
<div class="note" id="EN-US_TOPIC_0027371530__note5028177721282"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0027371530__p35919634212751">Cloud Eye discontinues monitoring <span id="EN-US_TOPIC_0027371530__text2021072174413">ECS</span>s that remain in <strong id="EN-US_TOPIC_0027371530__b1315591017585">Stopped</strong> or <strong id="EN-US_TOPIC_0027371530__b17651313175812">Faulty</strong> state for 24 hours and removes them from the monitoring list. However, the alarm rules for such <span id="EN-US_TOPIC_0027371530__text1437682812584">ECS</span>s are not automatically deleted.</p>
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<a name="EN-US_TOPIC_0030013188"></a><a name="EN-US_TOPIC_0030013188"></a>
<h1 class="topictitle1">Can an <span id="text4310151463118">ECS</span> Without an EIP Access the Internet?</h1>
<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__i1285576725">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__i1644225005">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>
</li></ul>

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<div id="body8662426"><div class="section" id="EN-US_TOPIC_0030828256__section134415526532"><h4 class="sectiontitle">What Is Elastic Volume Service?</h4><p id="EN-US_TOPIC_0030828256__p5516112016229">Elastic Volume Service (EVS) offers scalable block storage for <span id="EN-US_TOPIC_0030828256__text169521139133911">ECS</span>s. With high reliability, high performance, and rich specifications, EVS disks can be used for distributed file systems, development and test environments, data warehouse applications, and high-performance computing (HPC) scenarios to meet diverse service requirements.</p>
</div>
<div class="section" id="EN-US_TOPIC_0030828256__section60010917143352"><h4 class="sectiontitle">Disk Types</h4><p id="EN-US_TOPIC_0030828256__p527152612594">EVS disk types differ in performance. Choose the disk type based on your requirements.</p>
<p id="EN-US_TOPIC_0030828256__p319318211216">For more information about EVS disk specifications and performance, see <em id="EN-US_TOPIC_0030828256__i15558311115610">Elastic Volume Service User Guide</em>.</p>
<p id="EN-US_TOPIC_0030828256__p319318211216">For more information about EVS disk specifications and performance, see "Disk Types and Performance" in the <em id="EN-US_TOPIC_0030828256__i1252110812487">Elastic Volume Service User Guide</em>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0030828256__section64489635143430"><h4 class="sectiontitle">Device Types</h4><div class="p" id="EN-US_TOPIC_0030828256__en-us_topic_0044524737_p34112123101858">EVS disks have two device types, Virtual Block Device (VBD) and Small Computer System Interface (SCSI).<ul id="EN-US_TOPIC_0030828256__en-us_topic_0044524737_en-us_topic_0052554220_ul3420094547"><li id="EN-US_TOPIC_0030828256__li10683144144344">VBD<p id="EN-US_TOPIC_0030828256__p30971269144345"><a name="EN-US_TOPIC_0030828256__li10683144144344"></a><a name="li10683144144344"></a>When you create an EVS disk on the management console, <strong id="EN-US_TOPIC_0030828256__b842352706183944">Device Type</strong> of the EVS disk is VBD by default. VBD EVS disks support only simple SCSI read/write commands.</p>
</li><li id="EN-US_TOPIC_0030828256__li13472368144348">SCSI<p id="EN-US_TOPIC_0030828256__p44947298144349"><a name="EN-US_TOPIC_0030828256__li13472368144348"></a><a name="li13472368144348"></a>You can create EVS disks whose <strong id="EN-US_TOPIC_0030828256__b842352706145311">Device Type</strong> is SCSI on the management console. These EVS disks support transparent SCSI command transmission, allowing <span id="EN-US_TOPIC_0030828256__text1239371654017">ECS</span> OS to directly access underlying storage media. SCSI EVS disks support both basic and advanced SCSI commands.</p>

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<h1 class="topictitle1">Scenarios and Disk Partitions</h1>
<div id="body1463968482017"><p id="EN-US_TOPIC_0030831623__p1584511566118">If you have added a data disk during ECS creation, you must initialize the data disk after logging in to the ECS.</p>
<div class="section" id="EN-US_TOPIC_0030831623__section087915417241"><h4 class="sectiontitle">Scenarios</h4><div class="p" id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p9280836203858">After a disk is attached to a <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text1184202435812">server</span>, you need to log in to the <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text10187182485810">server</span> to initialize the disk, that is, format the disk. You must initialize a disk before accessing it.<ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul64936880203918"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li2272733592439">System disk<p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p6479032162353"><a name="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li2272733592439"></a><a name="en-us_topic_0085245975_li2272733592439"></a>A system disk does not require manual initialization because it is automatically created and initialized upon <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text265152549174046">server</span> creation. The default disk partition style is master boot record (MBR).</p>
<div class="section" id="EN-US_TOPIC_0030831623__section087915417241"><h4 class="sectiontitle">Scenarios</h4><div class="p" id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p9280836203858">After a disk is attached to a <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text1184202435812">server</span>, you need to log in to the <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text10187182485810">server</span> to initialize the disk, that is, format the disk. You must initialize a disk before accessing it.<ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul64936880203918"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li2272733592439">System disk<p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p6479032162353"><a name="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li2272733592439"></a><a name="en-us_topic_0085245975_li2272733592439"></a>A system disk does not require manual initialization because it is automatically created and initialized upon <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text265152549174046">server</span> creation. The default partition style is master boot record (MBR).</p>
</li><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li710858692435">Data disk<ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul4509464492449"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li1145481992348">If a data disk is created along with <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text727295939115632">a server</span>, it will be automatically attached to the <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text626098683212827">server</span>.</li><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li3483818692348">If a data disk is created separately, you need to manually attach it to <span id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_text1301337270212932">a server</span>.</li></ul>
<p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p4337941192547">In both cases, you must initialize the data disk before using it. Choose a proper disk partition style based on your service plan.</p>
<p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p4337941192547">In both cases, you must initialize the data disk before using it. Choose an appropriate partition style based on your service plan.</p>
</li></ul>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0030831623__section141622112299"><h4 class="sectiontitle">Disk Partition Styles</h4><p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p38372208144850"><a href="#EN-US_TOPIC_0030831623__en-us_topic_0085245975_table2729705994129">Table 1</a> lists the common disk partition styles. In Linux, different disk partition styles require different partitioning tools.</p>
<div class="section" id="EN-US_TOPIC_0030831623__section141622112299"><h4 class="sectiontitle">Partitioning Operation Guide</h4><p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p38372208144850"><a href="#EN-US_TOPIC_0030831623__en-us_topic_0085245975_table2729705994129">Table 1</a> lists the common disk partition styles. In Linux, different disk partition styles require different partitioning tools.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0030831623__en-us_topic_0085245975_table2729705994129"></a><a name="en-us_topic_0085245975_table2729705994129"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_table2729705994129" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Disk partition styles</caption><thead align="left"><tr id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_row2194811894129"><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.1"><p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p2826869894129">Disk Partition Style</p>
</th>
@ -25,7 +25,7 @@
<td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.3.3.2.5.1.2 "><p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p2342140694129">2 TB</p>
</td>
<td class="cellrowborder" valign="top" width="41%" headers="mcps1.3.3.3.2.5.1.3 "><ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul21060408163037"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li45070926163039">4 primary partitions</li><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li63482739163037">3 primary partitions and 1 extended partition</li></ul>
<div class="p" id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p723613328428">With MBR, one may create several primary partitions and an extended partition. An extended partition must be divided into several logical partitions before use. For example, if 6 partitions need to be created, you can create the partitions in the following two ways:<ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul6972172517474"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li49871396163255">3 primary partitions and 1 extended partition, with the extended partition divided into 3 logical partitions</li><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li1797352519473">1 primary partition and 1 extended partition, with the extended partition divided into 5 logical partitions</li></ul>
<div class="p" id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p723613328428">With MBR, you can create several primary partitions and one extended partition. The extended partition must be divided into logical partitions before use. For example, if 6 partitions need to be created, you can create them in the following two ways:<ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul6972172517474"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li49871396163255">3 primary partitions and 1 extended partition, with the extended partition divided into 3 logical partitions</li><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li1797352519473">1 primary partition and 1 extended partition, with the extended partition divided into 5 logical partitions</li></ul>
</div>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.4 "><ul id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_ul1160282695454"><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li65968598144219">fdisk</li><li id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_li6593898795457">parted</li></ul>
@ -45,9 +45,6 @@
</tbody>
</table>
</div>
<div class="notice" id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_note21633485151134"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p11834286151113">The maximum disk capacity supported by MBR is 2 TB, and that supported by GPT is 18 EB. Because a data disk currently supports up to 32 TB, use the GPT partition style if your disk capacity is larger than 2 TB.</p>
<p id="EN-US_TOPIC_0030831623__en-us_topic_0085245975_p612681541585">If you change the disk partition style after the disk has been used, the data on the disk will be cleared. Therefore, select a proper disk partition style when initializing the disk.</p>
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</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0029320966_li110100322530">On the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1458122962419">Inbound Rules</strong> tab, click <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b84235270615562">Add Rule</strong>. In the displayed dialog box, set required parameters to add an inbound rule.<p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p10544530320">You can click <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b84235270617413">+</strong> to add more inbound rules.</p>
<div class="fignone" id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_fig1786518124129"><span class="figcap"><b>Figure 1 </b>Add Inbound Rule</span><br><span><img id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_image186617129126" src="en-us_image_0284920908.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_table111445216564" width="90%" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Inbound rule parameter description</caption><thead align="left"><tr id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_row1811565205613"><th align="left" class="cellrowborder" valign="top" width="12.55%" id="mcps1.3.2.2.7.5.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p51151452125620"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b715982124">Parameter</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_table111445216564" width="90%" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Inbound rule parameter description</caption><thead align="left"><tr id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_row1811565205613"><th align="left" class="cellrowborder" valign="top" width="12.55%" id="mcps1.3.2.2.7.5.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p51151452125620"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b2050942514">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="69.45%" id="mcps1.3.2.2.7.5.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p5115552175613"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b691416392">Description</strong></p>
<th align="left" class="cellrowborder" valign="top" width="69.45%" id="mcps1.3.2.2.7.5.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p5115552175613"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b350217738">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="18%" id="mcps1.3.2.2.7.5.2.4.1.3"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p711565219563"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b984193573219">Example Value</strong></p>
</th>
@ -21,7 +21,7 @@
<tbody><tr id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_row9115105219562"><td class="cellrowborder" rowspan="2" valign="top" width="12.55%" headers="mcps1.3.2.2.7.5.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p151157525565">Protocol &amp; Port</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p3510193211510"></p>
</td>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.7.5.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1711515526562"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1939852442315">Protocol</strong>: The network protocol. Currently, the value can be <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1443367866">All</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1218305018">TCP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1316684674">UDP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1409289777">ICMP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1604725750">GRE</strong>, or others.</p>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.7.5.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1711515526562"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1939852442315">Protocol</strong>: The network protocol. Currently, the value can be <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b207485119">All</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1997702102">TCP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1330876807">UDP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b569001586">ICMP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b175264618215">GRE</strong>, or others.</p>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.7.5.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p193908441914">TCP</p>
</td>
@ -51,12 +51,12 @@
</tbody>
</table>
</div>
</li><li id="EN-US_TOPIC_0030878383__li114871417141">On the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b663618586245">Outbound Rules</strong> tab, click <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b115789195">Add Rule</strong>. In the displayed dialog box, set required parameters to add an outbound rule.<p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p161151454111115">You can click <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b842352706174116">+</strong> to add more outbound rules.</p>
</li><li id="EN-US_TOPIC_0030878383__li114871417141">On the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b663618586245">Outbound Rules</strong> tab, click <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b431308581">Add Rule</strong>. In the displayed dialog box, set required parameters to add an outbound rule.<p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p161151454111115">You can click <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b842352706174116">+</strong> to add more outbound rules.</p>
<div class="fignone" id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_fig11809848184019"><span class="figcap"><b>Figure 2 </b>Add Outbound Rule</span><br><span><img id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_image138102048204017" src="en-us_image_0284993717.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_table0614192319232" width="90%" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Outbound rule parameter description</caption><thead align="left"><tr id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_row19614623202312"><th align="left" class="cellrowborder" valign="top" width="12.55%" id="mcps1.3.2.2.8.5.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p361592319230"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b2145810946">Parameter</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_table0614192319232" width="90%" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Outbound rule parameter description</caption><thead align="left"><tr id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_row19614623202312"><th align="left" class="cellrowborder" valign="top" width="12.55%" id="mcps1.3.2.2.8.5.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p361592319230"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1986520175">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="69.45%" id="mcps1.3.2.2.8.5.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1961514231232"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1795887525">Description</strong></p>
<th align="left" class="cellrowborder" valign="top" width="69.45%" id="mcps1.3.2.2.8.5.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1961514231232"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1993881696">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="18%" id="mcps1.3.2.2.8.5.2.4.1.3"><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1061552372311"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b78071625745">Example Value</strong></p>
</th>
@ -65,7 +65,7 @@
<tbody><tr id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_row76161523132311"><td class="cellrowborder" rowspan="2" valign="top" width="12.55%" headers="mcps1.3.2.2.8.5.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1761652313238">Protocol &amp; Port</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p4616323182310"></p>
</td>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.8.5.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1461632352313"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b114706499477">Protocol</strong>: The network protocol. Currently, the value can be <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b535370288">All</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b862614030">TCP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b438994982">UDP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b532524327">ICMP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b1450619343">GRE</strong>, or others.</p>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.8.5.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p1461632352313"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b114706499477">Protocol</strong>: The network protocol. Currently, the value can be <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b232398203">All</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b735720881">TCP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b805247904">UDP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b798891392">ICMP</strong>, <strong id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_b386710031">GRE</strong>, or others.</p>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.8.5.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0118534005_p157082238193">TCP</p>
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<td class="cellrowborder" valign="top" width="13%" headers="mcps1.3.9.2.7.1.2 "><p id="EN-US_TOPIC_0030911465__p65605483141717">InfiniBand NIC status</p>
</td>
<td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.9.2.7.1.3 "><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__b1245636963">0</strong> or <strong id="EN-US_TOPIC_0030911465__b1424923177">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__b497521122">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__b1923629111">0</strong> or <strong id="EN-US_TOPIC_0030911465__b1009052520">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__b663255086">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>
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<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>. Therefore, 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__text120830195810">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>
</div>
<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__b1270110994914"><span id="EN-US_TOPIC_0031107266__text370109104910">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031107266__b12702109164919">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__b1417298090">Operation</strong> column, click <strong id="EN-US_TOPIC_0031107266__b1411244636">More</strong> and select <strong id="EN-US_TOPIC_0031107266__b310991290">Get Password</strong>.</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>
<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__b1270110994914"><span id="EN-US_TOPIC_0031107266__text370109104910">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031107266__b12702109164919">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__b1111735779">Operation</strong> column, click <strong id="EN-US_TOPIC_0031107266__b425181927">More</strong> and select <strong id="EN-US_TOPIC_0031107266__b1760452971">Get Password</strong>.</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>
</div>
<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">tenant_id</em>}/servers/{<em id="EN-US_TOPIC_0031107266__i842352697152825">server_id</em>}/os-server-password".</p>

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@ -3,7 +3,7 @@
<h1 class="topictitle1">Changing the OS</h1>
<div id="body1465299569106"><div class="section" id="EN-US_TOPIC_0031523135__section44633721195915"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0031523135__p393121161518">Changing an <span id="EN-US_TOPIC_0031523135__text4778336112417">ECS</span> OS will change the system disk attached to the <span id="EN-US_TOPIC_0031523135__text114055388016">ECS</span>. After the changing, the system disk ID of the <span id="EN-US_TOPIC_0031523135__text88756374246">ECS</span> will be changed, and the original system disk will be deleted.</p>
<p id="EN-US_TOPIC_0031523135__p1161765124318">If the OS running on an <span id="EN-US_TOPIC_0031523135__text1975123916248">ECS</span> cannot meet service requirements, change the <span id="EN-US_TOPIC_0031523135__text10604694117">ECS</span> OS.</p>
<p id="EN-US_TOPIC_0031523135__p116185911858">The public cloud supports changing between image types (public images, private images, and shared images) and between OSs. You can change your OS by changing your ECS image.</p>
<p id="EN-US_TOPIC_0031523135__p116185911858">The cloud platform supports changing between image types (public images, private images, and shared images) and between OSs. You can change your OS by changing your ECS image.</p>
</div>
<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__li61491838141054">The EVS disk quota must be greater than 0.</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>
@ -21,9 +21,9 @@
</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__b16925135682315"><span id="EN-US_TOPIC_0031523135__text492565616235">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031523135__b39251056172320">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031523135__li1085462314256">Locate the row containing the target <span id="EN-US_TOPIC_0031523135__text18919411255">ECS</span>. Click <strong id="EN-US_TOPIC_0031523135__b232315336513">More</strong> in the <strong id="EN-US_TOPIC_0031523135__b1572133715513">Operation</strong> column and select <strong id="EN-US_TOPIC_0031523135__b6638114817463">Manage Image/Disk</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b123641742556">Change OS</strong>.<p id="EN-US_TOPIC_0031523135__p3854122302512">Only stopped <span id="EN-US_TOPIC_0031523135__text6308195102518">ECS</span>s support OS changing. If the <span id="EN-US_TOPIC_0031523135__text7164698613">ECS</span> is not stopped, stop it before proceeding with changing.</p>
</li><li id="EN-US_TOPIC_0031523135__li359341520111">Modify related <span id="EN-US_TOPIC_0031523135__text128339443259">ECS</span> parameters, such as <strong id="EN-US_TOPIC_0031523135__b157867277810">Image Type</strong> and <strong id="EN-US_TOPIC_0031523135__b16431831583">Image</strong>, based on service requirements.<p id="EN-US_TOPIC_0031523135__p4891784120112">For more details, see <a href="en-us_topic_0021831611.html">Creating an ECS</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 assign KMS access permissions to EVS. If you have rights granting permission, assign the KMS access permissions to EVS. If you do not have the permission, contact the user having the security administrator rights to assign the KMS access permissions. For more 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 assign KMS access permissions to EVS. If you have rights granting permission, assign the KMS access permissions to EVS. If you do not have the permission, contact the user having the security administrator rights 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>
<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_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_li5286191313611"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b84235270615143">Xrole Name: EVSAccessKMS</strong>: specifies 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_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_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_en-us_topic_0013859510_b84235270615143">Xrole Name: EVSAccessKMS</strong>: specifies 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 Type</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>
@ -37,7 +37,7 @@
</li><li id="EN-US_TOPIC_0031523135__li54436398246">Mount the partition so that you can use the data disk.<p id="EN-US_TOPIC_0031523135__p59351323337"><a name="EN-US_TOPIC_0031523135__li54436398246"></a><a name="li54436398246"></a><strong id="EN-US_TOPIC_0031523135__b1785919239581">mount</strong> <em id="EN-US_TOPIC_0031523135__i7864172319584">Disk partition</em> <em id="EN-US_TOPIC_0031523135__i1386562311589">Device name</em></p>
</li><li id="EN-US_TOPIC_0031523135__li212413912617">Check the mount result.<p id="EN-US_TOPIC_0031523135__p11281039767"><a name="EN-US_TOPIC_0031523135__li212413912617"></a><a name="li212413912617"></a><strong id="EN-US_TOPIC_0031523135__b143744411567">df -TH</strong></p>
</li></ol>
</li><li id="EN-US_TOPIC_0031523135__li127064517245">If the OS change is unsuccessful, perform steps <a href="#EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628">3</a> to <a href="#EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556">10</a> again to retry changing the OS again.</li><li id="EN-US_TOPIC_0031523135__li207061356245">If the second OS change attempt is unsuccessful, contact customer service for manual recovery at the backend.</li></ul>
</li><li id="EN-US_TOPIC_0031523135__li127064517245">If the OS change is unsuccessful, perform steps <a href="#EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628">3</a> to <a href="#EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556">10</a> again to retry the OS change.</li><li id="EN-US_TOPIC_0031523135__li207061356245">If the second OS change attempt is unsuccessful, contact customer service for manual recovery at the backend.</li></ul>
</div>
</div>
<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__b1125514142">Example 2: Inject a Cloud-Config data script.</strong></p>
<p id="EN-US_TOPIC_0032380449__p1849372719381"><strong id="EN-US_TOPIC_0032380449__b159375716">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:
@ -165,8 +165,9 @@ write_files:
</table>
</div>
<p id="EN-US_TOPIC_0032380449__p88331362714">User data example:</p>
<ul id="EN-US_TOPIC_0032380449__ul19621835103412"><li id="EN-US_TOPIC_0032380449__li2448840133414">Using a ciphertext password (recommended)<pre class="screen" id="EN-US_TOPIC_0032380449__screen129561436162716">#!/bin/bash
<div class="p" id="EN-US_TOPIC_0032380449__p20316123518620">Using a ciphertext password (recommended)<pre class="screen" id="EN-US_TOPIC_0032380449__screen129561436162716">#!/bin/bash
echo 'root:$6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig' | chpasswd -e;</pre>
</div>
<p id="EN-US_TOPIC_0032380449__p5537154415278">In the preceding command output, <strong id="EN-US_TOPIC_0032380449__b5011883413">$6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig</strong> is the ciphertext password, which can be generated as follows:</p>
<ol id="EN-US_TOPIC_0032380449__ol1848725423417"><li id="EN-US_TOPIC_0032380449__li34871541346">Run the following command to generate an encrypted ciphertext value:<p id="EN-US_TOPIC_0032380449__p470413414213"><a name="EN-US_TOPIC_0032380449__li34871541346"></a><a name="li34871541346"></a><strong id="EN-US_TOPIC_0032380449__b4944159164218">python -c "import crypt, getpass, pwd;print crypt.mksalt()"</strong></p>
<p id="EN-US_TOPIC_0032380449__p1344124117433">The following information is displayed:</p>
@ -175,7 +176,6 @@ echo 'root:$6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig' | chpasswd -e;</p
<p id="EN-US_TOPIC_0032380449__p391044184313">The following information is displayed:</p>
<pre class="screen" id="EN-US_TOPIC_0032380449__screen954165416428">$6$V6azyeLwcD3CHlpY$BN3VVq18fmCkj66B4zdHLWevqcxlig</pre>
</li></ol>
</li></ul>
<p id="EN-US_TOPIC_0032380449__p166423531271">After the <span id="EN-US_TOPIC_0032380449__text1114833164416">ECS</span> is created, you can use the password to log in to it.</p>
</div>
<div class="section" id="EN-US_TOPIC_0032380449__section852885517018"><h4 class="sectiontitle">Case 3</h4><p id="EN-US_TOPIC_0032380449__p77511313110">This case illustrates how to use the user data passing function to reset the password for logging in to a Linux <span id="EN-US_TOPIC_0032380449__text668419318447">ECS</span>.</p>

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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__i938212825">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 directed in <em id="EN-US_TOPIC_0032398121__i1816529299">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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</div>
<div class="section" id="EN-US_TOPIC_0032980085__section50994308215238"><h4 class="sectiontitle">Notes</h4><p id="EN-US_TOPIC_0032980085__p203952404812">An existing <span id="EN-US_TOPIC_0032980085__text581819132613">ECS</span> cannot be added to an ECS group.</p>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section5508038321333"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0032980085__ol1373281010048"><li id="EN-US_TOPIC_0032980085__li5648642910048">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li192471630111819">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__li3861581410048">Under <strong id="EN-US_TOPIC_0032980085__b842352706201456"><span id="EN-US_TOPIC_0032980085__text2743102192814">Computing</span></strong>, click <strong id="EN-US_TOPIC_0032980085__b84235270620150">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li1199800610048">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b84235270615237">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li4087319010048">On the <strong id="EN-US_TOPIC_0032980085__b84235270615251">ECS Group</strong> page, click <strong id="EN-US_TOPIC_0032980085__b84235270615255">Create ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li3231439110048">Enter the name of the target ECS group.<p id="EN-US_TOPIC_0032980085__p2072086214850"><a name="EN-US_TOPIC_0032980085__li3231439110048"></a><a name="li3231439110048"></a>The <strong id="EN-US_TOPIC_0032980085__b1244820618">Anti-affinity</strong> policy is used by default.</p>
<div class="section" id="EN-US_TOPIC_0032980085__section5508038321333"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0032980085__ol1373281010048"><li id="EN-US_TOPIC_0032980085__li5648642910048">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li192471630111819">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__li3861581410048">Under <strong id="EN-US_TOPIC_0032980085__b842352706201456"><span id="EN-US_TOPIC_0032980085__text2743102192814">Computing</span></strong>, click <strong id="EN-US_TOPIC_0032980085__b84235270620150">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li1199800610048">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b84235270615237">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li4087319010048">On the <strong id="EN-US_TOPIC_0032980085__b84235270615251">ECS Group</strong> page, click <strong id="EN-US_TOPIC_0032980085__b84235270615255">Create ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li3231439110048">Enter the name of the target ECS group.<p id="EN-US_TOPIC_0032980085__p2072086214850"><a name="EN-US_TOPIC_0032980085__li3231439110048"></a><a name="li3231439110048"></a>The <strong id="EN-US_TOPIC_0032980085__b84235270611230">Anti-affinity</strong> policy is used by default.</p>
</li><li id="EN-US_TOPIC_0032980085__li2239406610048">Click <strong id="EN-US_TOPIC_0032980085__b842352706112310">OK</strong>.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section5656963010194"><h4 class="sectiontitle">Follow-up Procedure</h4><p id="EN-US_TOPIC_0032980085__p3806804510311">Add an <span id="EN-US_TOPIC_0032980085__text53965472612">ECS</span> to an ECS group only when creating the <span id="EN-US_TOPIC_0032980085__text1433215415176">ECS</span>.</p>

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<a name="EN-US_TOPIC_0035470096"></a><a name="EN-US_TOPIC_0035470096"></a>
<h1 class="topictitle1">ECS Types</h1>
<div id="body1471085686525"><div class="p" id="EN-US_TOPIC_0035470096__p12646151217497">The public cloud provides the following ECS types for different application scenarios:<ul id="EN-US_TOPIC_0035470096__ul881035115013"><li id="EN-US_TOPIC_0035470096__li681335115012">General-purpose</li><li id="EN-US_TOPIC_0035470096__li1338815123266">Dedicated general-purpose</li><li id="EN-US_TOPIC_0035470096__li1672610268563">Memory-optimized</li><li id="EN-US_TOPIC_0035470096__li164737493505">Large-memory</li><li id="EN-US_TOPIC_0035470096__li879873165110">Disk-intensive</li><li id="EN-US_TOPIC_0035470096__li1250715555110">High-performance computing</li><li id="EN-US_TOPIC_0035470096__li925562635117">GPU-accelerated</li></ul>
<div id="body1471085686525"><div class="p" id="EN-US_TOPIC_0035470096__p12646151217497">The cloud platform provides the following ECS types for different application scenarios:<ul id="EN-US_TOPIC_0035470096__ul881035115013"><li id="EN-US_TOPIC_0035470096__li681335115012">General-purpose</li><li id="EN-US_TOPIC_0035470096__li1338815123266">Dedicated general-purpose</li><li id="EN-US_TOPIC_0035470096__li1672610268563">Memory-optimized</li><li id="EN-US_TOPIC_0035470096__li164737493505">Large-memory</li><li id="EN-US_TOPIC_0035470096__li879873165110">Disk-intensive</li><li id="EN-US_TOPIC_0035470096__li1250715555110">High-performance computing</li><li id="EN-US_TOPIC_0035470096__li925562635117">GPU-accelerated</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0035470096__section741930611313"><h4 class="sectiontitle">ECS Flavor Naming Rules</h4><p id="EN-US_TOPIC_0035470096__p44031986103452">ECS flavors are named using the format of "AB.C.D".</p>
<p id="EN-US_TOPIC_0035470096__p1985920011446">The format is defined as follows:</p>

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@ -42,7 +42,7 @@
</td>
<td class="cellrowborder" valign="top" width="10.13%" headers="mcps1.3.2.2.2.10.1.7 "><p id="EN-US_TOPIC_0035470099__p975653772517">KVM</p>
</td>
<td class="cellrowborder" valign="top" width="12.330000000000002%" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p14756133732515">2×1675</p>
<td class="cellrowborder" valign="top" width="12.330000000000002%" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p14756133732515">2 × 1675</p>
</td>
<td class="cellrowborder" rowspan="6" valign="top" width="11.000000000000002%" headers="mcps1.3.2.2.2.10.1.9 "><p id="EN-US_TOPIC_0035470099__p449920318167">CPU: Intel&reg; Xeon&reg; Gold 6151</p>
</td>
@ -61,7 +61,7 @@
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.7 "><p id="EN-US_TOPIC_0035470099__p147561837182520">KVM</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p1275663712258">4×1675</p>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p1275663712258">4 × 1675</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__row14967171717297"><td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.1 "><p id="EN-US_TOPIC_0035470099__p15954194015818">d2.4xlarge.8</p>
@ -78,7 +78,7 @@
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.7 "><p id="EN-US_TOPIC_0035470099__p10967117172915">KVM</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p169678175293">8×1675</p>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p169678175293">8 × 1675</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__row014021416298"><td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.1 "><p id="EN-US_TOPIC_0035470099__p8954240487">d2.6xlarge.8</p>
@ -95,7 +95,7 @@
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.7 "><p id="EN-US_TOPIC_0035470099__p16140151414292">KVM</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p181401414112911">12×1675</p>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p181401414112911">12 × 1675</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__row575615372253"><td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.1 "><p id="EN-US_TOPIC_0035470099__p199540401081">d2.8xlarge.8</p>
@ -112,7 +112,7 @@
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.7 "><p id="EN-US_TOPIC_0035470099__p10756133715250">KVM</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p1675663717258">16×1675</p>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p1675663717258">16 × 1675</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__row1375619376259"><td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.1 "><p id="EN-US_TOPIC_0035470099__p995417404819">d2.15xlarge.9</p>
@ -129,7 +129,7 @@
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.7 "><p id="EN-US_TOPIC_0035470099__p207561237112515">KVM</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p13756113742515">24×1675</p>
<td class="cellrowborder" valign="top" headers="mcps1.3.2.2.2.10.1.8 "><p id="EN-US_TOPIC_0035470099__p13756113742515">24 × 1675</p>
</td>
</tr>
</tbody>
@ -142,7 +142,7 @@
</div>
<div class="section" id="EN-US_TOPIC_0035470099__section9344849161910"><h4 class="sectiontitle">Features of D2 ECSs</h4><ul id="EN-US_TOPIC_0035470099__ul18346124951918"><li id="EN-US_TOPIC_0035470099__li434604951910">D2 ECSs use local disks to provide high sequential read/write performance and low latency, improving file read/write performance.</li><li id="EN-US_TOPIC_0035470099__li13346164961915">D2 ECSs provide powerful and stable computing capabilities, ensuring efficient data processing.</li><li id="EN-US_TOPIC_0035470099__li734617492193">D2 ECSs with a vCPU/memory ratio of 1:8 process large volumes of data.</li><li id="EN-US_TOPIC_0035470099__li2346194971917">D2 ECSs provide high intranet performance, including high intranet bandwidth and PPS, meeting requirements for data exchange between ECSs during peak hours.</li><li id="EN-US_TOPIC_0035470099__li1362217566192">Each D2 ECS supports a maximum configuration of 24 local disks, 60 vCPUs, and 540 GiB memory.</li></ul>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035470099__table9670341181017" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Specifications of a single SAS HDD disk attached to a D2 ECS</caption><thead align="left"><tr id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_row17671114131010"><th align="left" class="cellrowborder" valign="top" width="49.94%" id="mcps1.3.4.3.2.3.1.1"><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p1367104115109">Metric</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035470099__table9670341181017" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Specifications of a Single SAS HDD Disk Attached to a D2 ECS</caption><thead align="left"><tr id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_row17671114131010"><th align="left" class="cellrowborder" valign="top" width="49.94%" id="mcps1.3.4.3.2.3.1.1"><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p1367104115109">Metric</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="50.06%" id="mcps1.3.4.3.2.3.1.2"><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p1671741141018">Performance</p>
</th>
@ -150,17 +150,17 @@
</thead>
<tbody><tr id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_row16719414103"><td class="cellrowborder" valign="top" width="49.94%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p15671144118105">Disk capacity</p>
</td>
<td class="cellrowborder" valign="top" width="50.06%" headers="mcps1.3.4.3.2.3.1.2 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p067104121019">1800 GiB</p>
<td class="cellrowborder" valign="top" width="50.06%" headers="mcps1.3.4.3.2.3.1.2 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p067104121019">1,675 GiB</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_row18671134131018"><td class="cellrowborder" valign="top" width="49.94%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p10671641191019">Maximum throughput</p>
</td>
<td class="cellrowborder" valign="top" width="50.06%" headers="mcps1.3.4.3.2.3.1.2 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p16672141121018">230 MB/s</p>
<td class="cellrowborder" valign="top" width="50.06%" headers="mcps1.3.4.3.2.3.1.2 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p16672141121018">230 MBps</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_row06721841121017"><td class="cellrowborder" valign="top" width="49.94%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p867294112107">Access latency</p>
</td>
<td class="cellrowborder" valign="top" width="50.06%" headers="mcps1.3.4.3.2.3.1.2 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p1167219416102">Millisecond-level</p>
<td class="cellrowborder" valign="top" width="50.06%" headers="mcps1.3.4.3.2.3.1.2 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_p1167219416102">Within milliseconds</p>
</td>
</tr>
</tbody>
@ -209,9 +209,9 @@
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.5.2.1.2.2.3.1.2 "><ul id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_ul33191534203710"><li id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_li0319123412374">Oracle Linux Server release 8.4 64bit</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_li0319134173710">Oracle Linux Server release 7.6 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.5.2.1.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_p327810276226">RedHat</p>
<tr id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.5.2.1.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_p327810276226">Red Hat</p>
</td>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.5.2.1.2.2.3.1.2 "><ul id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_ul6662114394210"><li id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_li176621143104218">Redhat Linux Enterprise 7.9 64bit</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_li2066217436429">Redhat Linux Enterprise 6.10 64bit</li></ul>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.5.2.1.2.2.3.1.2 "><ul id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_ul6662114394210"><li id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_li176621143104218">Red Hat Enterprise Linux 7.9 64bit</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_li2066217436429">Red Hat Enterprise Linux 6.10 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_row448935219429"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.5.2.1.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470099__en-us_topic_0035470101_p19489652184213">Rocky</p>

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@ -160,9 +160,9 @@
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.5.2.4.2.2.3.1.2 "><ul id="EN-US_TOPIC_0035470100__ul33191534203710"><li id="EN-US_TOPIC_0035470100__li0319123412374">Oracle Linux Server release 8.4 64bit</li><li id="EN-US_TOPIC_0035470100__li0319134173710">Oracle Linux Server release 7.6 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470100__row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.5.2.4.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470100__p327810276226">RedHat</p>
<tr id="EN-US_TOPIC_0035470100__row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.5.2.4.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470100__p327810276226">Red Hat</p>
</td>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.5.2.4.2.2.3.1.2 "><p id="EN-US_TOPIC_0035470100__p10907519132515">Redhat Linux Enterprise 7.9 64bit</p>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.5.2.4.2.2.3.1.2 "><p id="EN-US_TOPIC_0035470100__p10907519132515">Red Hat Enterprise Linux 7.9 64bit</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470100__row11181357124218"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.5.2.4.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470100__p201183573428">SUSE</p>
@ -177,7 +177,7 @@
</li><li id="EN-US_TOPIC_0035470100__li4951377311549">For SUSE H2 ECSs, if IP over InfiniBand (IPoIB) is required, you must manually configure an IP address for the InfiniBand NIC after installing the InfiniBand driver. For details, see <a href="en-us_topic_0083225171.html">How Can I Manually Configure an IP Address for an InfiniBand NIC?</a></li><li id="EN-US_TOPIC_0035470100__li2356792611282">After you delete an H2 ECS, the data stored in SSDs is automatically cleared. Therefore, do not store persistence data into SSDs during ECS running.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0035470100__section10721258203459"><h4 class="sectiontitle">Notes on Using HL1 ECSs</h4><ul id="EN-US_TOPIC_0035470100__ul4302655220366"><li id="EN-US_TOPIC_0035470100__li16593109204138">HL1 ECSs only support the attachment of high I/O (performance-optimized I) and ultra-high I/O (latency-optimized) EVS disks.<p id="EN-US_TOPIC_0035470100__p6694708171846"><a name="EN-US_TOPIC_0035470100__li16593109204138"></a><a name="li16593109204138"></a>To support 56 Gbit/s shared high I/O storage, you only need to attach high I/O (performance-optimized I) or ultra-high I/O (latency-optimized) EVS disks to target HL1 ECSs.</p>
</li><li id="EN-US_TOPIC_0035470100__li25572732203713">HL1 ECSs do not support specifications modification.</li><li id="EN-US_TOPIC_0035470100__li44397844204037">HL1 ECSs use InfiniBand NICs that provide a bandwidth of 100 Gbit/s.</li><li id="EN-US_TOPIC_0035470100__li2353082593959">HL1 ECSs created using a private image must have the InfiniBand NIC driver installed. Download the required version (4.2-1.0.0.0) of InfiniBand NIC driver from the official Mellanox website and install the driver by following the instructions provided by Mellanox.<ul id="EN-US_TOPIC_0035470100__ul1045084093959"><li id="EN-US_TOPIC_0035470100__li2694870093959">InfiniBand NIC type: <span class="parmvalue" id="EN-US_TOPIC_0035470100__parmvalue1903885920"><b>Mellanox Technologies ConnectX-4 Infiniband HBA (MCX455A-ECAT)</b></span></li><li id="EN-US_TOPIC_0035470100__li3536107193959">Mellanox official website: <a href="http://www.mellanox.com/" target="_blank" rel="noopener noreferrer">http://www.mellanox.com/</a></li></ul>
</li><li id="EN-US_TOPIC_0035470100__li25572732203713">HL1 ECSs do not support specifications modification.</li><li id="EN-US_TOPIC_0035470100__li44397844204037">HL1 ECSs use InfiniBand NICs that provide a bandwidth of 100 Gbit/s.</li><li id="EN-US_TOPIC_0035470100__li2353082593959">HL1 ECSs created using a private image must have the InfiniBand NIC driver installed. Download the required version (4.2-1.0.0.0) of InfiniBand NIC driver from the official Mellanox website and install the driver by following the instructions provided by Mellanox.<ul id="EN-US_TOPIC_0035470100__ul1045084093959"><li id="EN-US_TOPIC_0035470100__li2694870093959">InfiniBand NIC type: <span class="parmvalue" id="EN-US_TOPIC_0035470100__parmvalue1344925624"><b>Mellanox Technologies ConnectX-4 Infiniband HBA (MCX455A-ECAT)</b></span></li><li id="EN-US_TOPIC_0035470100__li3536107193959">Mellanox official website: <a href="http://www.mellanox.com/" target="_blank" rel="noopener noreferrer">http://www.mellanox.com/</a></li></ul>
</li><li id="EN-US_TOPIC_0035470100__li35926083111552">For SUSE HL1 ECSs, if IPoIB is required, you must manually configure an IP address for the InfiniBand NIC after installing the InfiniBand driver. For details, see <a href="en-us_topic_0083225171.html">How Can I Manually Configure an IP Address for an InfiniBand NIC?</a></li><li id="EN-US_TOPIC_0035470100__li16497101912286"><a href="#EN-US_TOPIC_0035470100__table204972196287">Table 4</a> lists the OSs supported by HL1 ECSs.
<div class="tablenoborder"><a name="EN-US_TOPIC_0035470100__table204972196287"></a><a name="table204972196287"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0035470100__table204972196287" frame="border" border="1" rules="all"><caption><b>Table 4 </b>Supported OS versions</caption><thead align="left"><tr id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_row11278327192211"><th align="left" class="cellrowborder" valign="top" width="49.95%" id="mcps1.3.6.2.6.2.2.3.1.1"><p id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_p19278162716225">OS</p>
</th>
@ -195,9 +195,9 @@
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.6.2.6.2.2.3.1.2 "><ul id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_ul33191534203710"><li id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_li0319123412374">Oracle Linux Server release 8.4 64bit</li><li id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_li0319134173710">Oracle Linux Server release 7.6 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.6.2.6.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_p327810276226">RedHat</p>
<tr id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.6.2.6.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_p327810276226">Red Hat</p>
</td>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.6.2.6.2.2.3.1.2 "><p id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_p10907519132515">Redhat Linux Enterprise 7.9 64bit</p>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.6.2.6.2.2.3.1.2 "><p id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_p10907519132515">Red Hat Enterprise Linux 7.9 64bit</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_row11181357124218"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.6.2.6.2.2.3.1.1 "><p id="EN-US_TOPIC_0035470100__en-us_topic_0035470100_p201183573428">SUSE</p>

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<a name="EN-US_TOPIC_0035470101"></a><a name="EN-US_TOPIC_0035470101"></a>
<h1 class="topictitle1">General-Purpose ECSs</h1>
<div id="body1471085716053"><div class="section" id="EN-US_TOPIC_0035470101__section21906772103453"><h4 class="sectiontitle">Overview</h4><p id="EN-US_TOPIC_0035470101__p53560489103456">General-purpose ECSs provide a balance of computing, memory, and network resources and a baseline level of vCPU performance with the ability to burst above the baseline. These ECSs are suitable for applications with general workloads, such as web servers, enterprise R&amp;D, and small-scale databases.</p>
<div id="body1471085716053"><div class="section" id="EN-US_TOPIC_0035470101__section21906772103453"><h4 class="sectiontitle">Overview</h4><p id="EN-US_TOPIC_0035470101__p53560489103456">General-purpose ECSs provide a balance of compute, memory, and network resources and a baseline level of vCPU performance with the ability to burst above the baseline. These ECSs are suitable for applications with general workloads, such as web servers, enterprise R&amp;D, and small-scale databases.</p>
<p id="EN-US_TOPIC_0035470101__p14674135144912">S3 ECSs are suitable for applications that require moderate performance generally but occasionally burstable high performance, such as light-workload web servers, enterprise R&amp;D and testing environments, and low- and medium-performance databases.</p>
<p id="EN-US_TOPIC_0035470101__p1080872815224">S2 ECSs use Intel&reg; Xeon&reg; Scalable processors, which significantly improve the comprehensive performance. They provide a balance of computing, memory, and network resources and a baseline level of vCPU performance with the ability to burst above the baseline. These ECSs are suitable for many applications.</p>
</div>
@ -927,9 +927,9 @@
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035470101__ul33191534203710"><li id="EN-US_TOPIC_0035470101__li0319123412374">Oracle Linux Server release 8.4 64bit</li><li id="EN-US_TOPIC_0035470101__li0319134173710">Oracle Linux Server release 7.6 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470101__row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035470101__p327810276226">RedHat</p>
<tr id="EN-US_TOPIC_0035470101__row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035470101__p327810276226">Red Hat</p>
</td>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035470101__ul6662114394210"><li id="EN-US_TOPIC_0035470101__li176621143104218">Redhat Linux Enterprise 7.9 64bit</li><li id="EN-US_TOPIC_0035470101__li2066217436429">Redhat Linux Enterprise 6.10 64bit</li></ul>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035470101__ul6662114394210"><li id="EN-US_TOPIC_0035470101__li176621143104218">Red Hat Enterprise Linux 7.9 64bit</li><li id="EN-US_TOPIC_0035470101__li2066217436429">Red Hat Enterprise Linux 6.10 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035470101__row448935219429"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035470101__p19489652184213">Rocky</p>

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<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_ul33191534203710"><li id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_li0319123412374">Oracle Linux Server release 8.4 64bit</li><li id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_li0319134173710">Oracle Linux Server release 7.6 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_p327810276226">RedHat</p>
<tr id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_p327810276226">Red Hat</p>
</td>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_ul6662114394210"><li id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_li176621143104218">Redhat Linux Enterprise 7.9 64bit</li><li id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_li2066217436429">Redhat Linux Enterprise 6.10 64bit</li></ul>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.4.3.2.3.1.2 "><ul id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_ul6662114394210"><li id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_li176621143104218">Red Hat Enterprise Linux 7.9 64bit</li><li id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_li2066217436429">Red Hat Enterprise Linux 6.10 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_row448935219429"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.4.3.2.3.1.1 "><p id="EN-US_TOPIC_0035550301__en-us_topic_0035470101_p19489652184213">Rocky</p>

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</div></div>
</li><li id="EN-US_TOPIC_0036046828__li866034714330">Do not detach an EVS disk from an <span id="EN-US_TOPIC_0036046828__text82661855152712">ECS</span> that is being started, stopped, or restarted.</li><li id="EN-US_TOPIC_0036046828__li1083426414330">Do not detach an EVS disk from a running <span id="EN-US_TOPIC_0036046828__text325756202712">ECS</span> whose OS does not support this feature. OSs supporting EVS disk detachment from a running <span id="EN-US_TOPIC_0036046828__text1319984173317">ECS</span> are listed in <a href="#EN-US_TOPIC_0036046828__section21417196143518">OSs Supporting EVS Disk Detachment from a Running ECS</a>.</li><li id="EN-US_TOPIC_0036046828__li2083217118616">For a running Linux <span id="EN-US_TOPIC_0036046828__text13577456172718">ECS</span>, the drive letter may be changed after an EVS disk is detached from it and then attached to it again. This is a normal case due to the drive letter allocation mechanism of the Linux system.</li><li id="EN-US_TOPIC_0036046828__li172337181873">For a running Linux <span id="EN-US_TOPIC_0036046828__text31061557172710">ECS</span>, the drive letter may be changed after an EVS disk is detached from it and the <span id="EN-US_TOPIC_0036046828__text1449242523510">ECS</span> is restarted. This is a normal case due to the drive letter allocation mechanism of the Linux system.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0036046828__section21417196143518"><a name="EN-US_TOPIC_0036046828__section21417196143518"></a><a name="section21417196143518"></a><h4 class="sectiontitle">OSs Supporting EVS Disk Detachment from a Running ECS</h4><div class="p" id="EN-US_TOPIC_0036046828__p5615198194219">OSs supporting EVS disk detachment from a running ECS include two parts:<ul id="EN-US_TOPIC_0036046828__ul1465704620856"><li id="EN-US_TOPIC_0036046828__li53235914201713">For the first part, see <a href="https://docs.otc.t-systems.com/en-us/usermanual/ims/en-us_topic_0030713143.html" target="_blank" rel="noopener noreferrer">Formats and OSs Supported for External Image Files</a>.</li><li id="EN-US_TOPIC_0036046828__li2908004620162"><a href="#EN-US_TOPIC_0036046828__table9271324195455">Table 1</a> lists the second part of supported OSs.
<div class="section" id="EN-US_TOPIC_0036046828__section21417196143518"><a name="EN-US_TOPIC_0036046828__section21417196143518"></a><a name="section21417196143518"></a><h4 class="sectiontitle">OSs Supporting EVS Disk Detachment from a Running ECS</h4><div class="p" id="EN-US_TOPIC_0036046828__p5615198194219">OSs supporting EVS disk detachment from a running ECS include two parts:<ul id="EN-US_TOPIC_0036046828__ul1465704620856"><li id="EN-US_TOPIC_0036046828__li53235914201713">For the first part, see <a href="https://docs.otc.t-systems.com/en-us/usermanual/ims/en-us_topic_0030713143.html" target="_blank" rel="noopener noreferrer">External Image File Formats and Supported OSs</a>.</li><li id="EN-US_TOPIC_0036046828__li2908004620162"><a href="#EN-US_TOPIC_0036046828__table9271324195455">Table 1</a> lists the second part of supported OSs.
<div class="tablenoborder"><a name="EN-US_TOPIC_0036046828__table9271324195455"></a><a name="table9271324195455"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0036046828__table9271324195455" frame="border" border="1" rules="all"><caption><b>Table 1 </b>OSs supporting EVS disk detachment from a running ECS</caption><thead align="left"><tr id="EN-US_TOPIC_0036046828__row29095028195455"><th align="left" class="cellrowborder" valign="top" width="35.709999999999994%" id="mcps1.3.4.2.1.2.2.2.3.1.1"><p id="EN-US_TOPIC_0036046828__p3874810195455">OS</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="64.29%" id="mcps1.3.4.2.1.2.2.2.3.1.2"><p id="EN-US_TOPIC_0036046828__p45424225195455">Version</p>

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<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.3.2.4.2.2.3.1.2 "><ul id="EN-US_TOPIC_0038024694__ul33191534203710"><li id="EN-US_TOPIC_0038024694__li0319123412374">Oracle Linux Server release 8.4 64bit</li><li id="EN-US_TOPIC_0038024694__li0319134173710">Oracle Linux Server release 7.6 64bit</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0038024694__row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.3.2.4.2.2.3.1.1 "><p id="EN-US_TOPIC_0038024694__p327810276226">RedHat</p>
<tr id="EN-US_TOPIC_0038024694__row1527810278221"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.3.2.4.2.2.3.1.1 "><p id="EN-US_TOPIC_0038024694__p327810276226">Red Hat</p>
</td>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.3.2.4.2.2.3.1.2 "><p id="EN-US_TOPIC_0038024694__p195561426131112">Redhat Linux Enterprise 7.9 64bit</p>
<td class="cellrowborder" valign="top" width="50.05%" headers="mcps1.3.3.2.4.2.2.3.1.2 "><p id="EN-US_TOPIC_0038024694__p195561426131112">Red Hat Enterprise Linux 7.9 64bit</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0038024694__row11181357124218"><td class="cellrowborder" valign="top" width="49.95%" headers="mcps1.3.3.2.4.2.2.3.1.1 "><p id="EN-US_TOPIC_0038024694__p201183573428">SUSE</p>
@ -192,7 +192,7 @@
</tbody>
</table>
</div>
</li><li id="EN-US_TOPIC_0038024694__li36507823151326">An ECS can have a maximum of 60 attached disks, including the system disk. For details about constraints, see <a href="en-us_topic_0018073215.html">Can I Attach Multiple Disks to an ECS?</a> <p id="EN-US_TOPIC_0038024694__p65958213151326">An example is provided as follows:</p>
</li><li id="EN-US_TOPIC_0038024694__li36507823151326">An ECS can have a maximum of 60 attached disks, including the system disk. For details about constraints, see <a href="en-us_topic_0018073215.html">Can I Attach Multiple Disks to an ECS?</a><p id="EN-US_TOPIC_0038024694__p65958213151326">An example is provided as follows:</p>
<p id="EN-US_TOPIC_0038024694__p56753007151326">An E3 ECS is to be created. It can have a maximum of 60 attached disks, where:</p>
<ul id="EN-US_TOPIC_0038024694__ul33882586151326"><li id="EN-US_TOPIC_0038024694__li41015023151326">The number of system disks is 1.</li><li id="EN-US_TOPIC_0038024694__li33590893151326">The number of EVS disks is at most 59.</li></ul>
<div class="note" id="EN-US_TOPIC_0038024694__note54794089164745"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0038024694__p23384761164745">The maximum number of disks attached to an existing large-memory ECS remains unchanged. To attach 60 disks, enable advanced disk. For details, see <a href="en-us_topic_0122307169.html">Enabling Advanced Disk</a>.</p>

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<h1 class="topictitle1">Viewing ECS Creation Statuses</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__b244339005">Start</strong>, <strong id="EN-US_TOPIC_0039588795__b832503052">Stop</strong>, and <strong id="EN-US_TOPIC_0039588795__b2050115060">More</strong>).</li><li id="EN-US_TOPIC_0039588795__li5737160017537">Click the number displayed above <strong id="EN-US_TOPIC_0039588795__b842352706193120">Creating</strong> and view details about the tasks.<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__b84235270612725">Failures</strong>: Creating the ECS failed. In such a case, the system automatically rolls the task back and displays an error code on the GUI, for example, <strong id="EN-US_TOPIC_0039588795__b8423527061285">Ecs.0013 Insufficient EIP quota</strong>.</li><li id="EN-US_TOPIC_0039588795__li11517121613158"><strong id="EN-US_TOPIC_0039588795__b84235270693257">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>
<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__b1656952467">Start</strong>, <strong id="EN-US_TOPIC_0039588795__b1800286237">Stop</strong>, and <strong id="EN-US_TOPIC_0039588795__b254298728">More</strong>).</li><li id="EN-US_TOPIC_0039588795__li5737160017537">Click the number displayed above <strong id="EN-US_TOPIC_0039588795__b842352706193120">Creating</strong> and view details about the tasks.<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__b84235270612725">Failures</strong>: Creating the ECS failed. In such a case, the system automatically rolls the task back and displays an error code on the GUI, for example, <strong id="EN-US_TOPIC_0039588795__b8423527061285">Ecs.0013 Insufficient EIP quota</strong>.</li><li id="EN-US_TOPIC_0039588795__li11517121613158"><strong id="EN-US_TOPIC_0039588795__b84235270693257">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 <span id="EN-US_TOPIC_0039588795__text4875882518">ECS</span> creation failure but the <span id="EN-US_TOPIC_0039588795__text236971515572">ECS</span> list displays the created <span id="EN-US_TOPIC_0039588795__text185413183571">ECS</span>, 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>
</li><li id="EN-US_TOPIC_0039588795__li16917201819452">If you find that the task status area shows an <span id="EN-US_TOPIC_0039588795__text4875882518">ECS</span> creation failure but the <span id="EN-US_TOPIC_0039588795__text292911819254">ECS</span> list displays the created <span id="EN-US_TOPIC_0039588795__text22071810142517">ECS</span>, 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>
</div></div>
</li></ol>
</div>

25
docs/ecs/umn/en-us_topic_0041169567.html
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@ -8,7 +8,24 @@
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0041169567__row13993154116205"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p11994164112204">2022-09-01</p>
<tbody><tr id="EN-US_TOPIC_0041169567__row1877521094214"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p13776710174215">2022-11-30</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p13239135104212">Modified the following content:</p>
<p id="EN-US_TOPIC_0041169567__p1623993574217">Modified reference links in the note in <a href="en-us_topic_0027157850.html">Enabling Internet Connectivity for an ECS Without an EIP</a>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row1877521094214"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p13776710174215">2022-11-22</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p13239135104212">Modified the following content:</p>
<p id="EN-US_TOPIC_0041169567__p1623993574217">Modified operations in <a href="en-us_topic_0013771092.html">General Operations for Modifying Specifications</a>.</p>
</td>
</tr><tr id="EN-US_TOPIC_0041169567__row1877521094214"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p13776710174215">2022-10-14</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p13239135104212">Added the following content:</p>
<p id="EN-US_TOPIC_0041169567__p1623993574217"><a href="en-us_topic_0094118976.html">Ultra-high I/O ECSs</a></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row13993154116205"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p11994164112204">2022-09-01</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p69941741142010">Deleted ultra-high I/O ECSs.</p>
</td>
@ -443,7 +460,7 @@
<tr id="EN-US_TOPIC_0041169567__row8254132413320"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p22545248311">2017-09-06</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p2935113713317">Modified the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul45605086223143"><li id="EN-US_TOPIC_0041169567__li40903694223143">Modified key description and added an image for the encryption process in <a href="en-us_topic_0046912051.html">User Encryption</a>.</li><li id="EN-US_TOPIC_0041169567__li79713417420">Added the official website for downloading TightVNC in <a href="en-us_topic_0013771089.html">Login Overview</a>.</li><li id="EN-US_TOPIC_0041169567__li23882168223328">Added examples for configuring routing policies in <a href="en-us_topic_0018073216.html">Can I Bind Multiple EIPs to an ECS?</a></li><li id="EN-US_TOPIC_0041169567__li60569117223551">Added description in <a href="en-us_topic_0025445670.html">Will NICs Added to an ECS Start Automatically?</a>, indicating that only the NICs added to an ECS running the CentOS 7.0 OS requires manual activation.</li><li id="EN-US_TOPIC_0041169567__li7899138191110"><a href="en-us_topic_0030932496.html">What Should I Do If I Cannot Use the German Keyboard to Enter Characters When I Log In to a Linux ECS Using VNC?</a></li></ul>
<ul id="EN-US_TOPIC_0041169567__ul45605086223143"><li id="EN-US_TOPIC_0041169567__li40903694223143">Modified key description and added an image for the encryption process in <a href="en-us_topic_0046912051.html">User Encryption</a>.</li><li id="EN-US_TOPIC_0041169567__li79713417420">Added the official website for downloading TightVNC in <a href="en-us_topic_0013771089.html">Login Overview</a>.</li><li id="EN-US_TOPIC_0041169567__li23882168223328">Added examples for configuring routing policies in <a href="en-us_topic_0018073216.html">Can Multiple EIPs Be Bound to an ECS?</a></li><li id="EN-US_TOPIC_0041169567__li60569117223551">Added description in <a href="en-us_topic_0025445670.html">Will NICs Added to an ECS Start Automatically?</a>, indicating that only the NICs added to an ECS running the CentOS 7.0 OS requires manual activation.</li><li id="EN-US_TOPIC_0041169567__li7899138191110"><a href="en-us_topic_0030932496.html">What Should I Do If I Cannot Use the German Keyboard to Enter Characters When I Log In to a Linux ECS Using VNC?</a></li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row13687142491115"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p1268712412117">2017-08-22</p>
@ -482,7 +499,7 @@
<tr id="EN-US_TOPIC_0041169567__row17527111418187"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p1352781418185">2017-05-19</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p20527814121811">Modified the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul2072619455186"><li id="EN-US_TOPIC_0041169567__li672614541810">Added <strong id="EN-US_TOPIC_0041169567__b8423527069224">Marketplace image</strong> to <strong id="EN-US_TOPIC_0041169567__b8423527069228">Image</strong> in <a href="en-us_topic_0163572589.html">Step 1: Configure Basic Settings</a>.</li></ul>
<ul id="EN-US_TOPIC_0041169567__ul2072619455186"><li id="EN-US_TOPIC_0041169567__li672614541810">Modified the image parameter description in <a href="en-us_topic_0163572589.html">Step 1: Configure Basic Settings</a>.</li></ul>
</td>
</tr>
<tr id="EN-US_TOPIC_0041169567__row11921528111814"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p171921528121815">2017-05-08</p>
@ -538,7 +555,7 @@
<tr id="EN-US_TOPIC_0041169567__row85933336417"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p115935336411">2017-01-16</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p10593113304115">Modified the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul5733315995256"><li id="EN-US_TOPIC_0041169567__li6233379795256">Added Marketplace image in <a href="en-us_topic_0030828254.html">Image Types</a> and <a href="en-us_topic_0163572589.html">Step 1: Configure Basic Settings</a>.</li></ul>
<ul id="EN-US_TOPIC_0041169567__ul5733315995256"><li id="EN-US_TOPIC_0041169567__li6233379795256">Added image descriptions in <a href="en-us_topic_0030828254.html">Image Types</a> and <a href="en-us_topic_0163572589.html">Step 1: Configure Basic Settings</a>.</li></ul>
</td>
</tr>
<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>

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