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ECS UMN 20260304 version. Updated the x1 and x1e specifications.

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Reviewed-by: Pristromskaia, Margarita <margarita.pristromskaia@t-systems.com>
Co-authored-by: wanghuijuan738 <wanghuijuan738@huawei.com>
Co-committed-by: wanghuijuan738 <wanghuijuan738@huawei.com>
This commit is contained in:
Huijuan, Wang
2026-03-27 13:57:13 +00:00
committed by zuul
parent c4291b1dd5
commit e21aa18fe1
61 changed files with 2705 additions and 2709 deletions
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14
docs/ecs/umn/ALL_META.TXT.json
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@ -925,7 +925,7 @@
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"code":"49",
"des":"Only a running ECS can be logged in to.For ECSs created using public images, the login usernames, passwords, and constraints vary depending on OSs running on the ECSs. Fo",
"des":"You can only log in to a running ECS.For ECSs created using public images, the login usernames, passwords, and constraints vary depending on OSs running on the ECSs. For ",
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@ -2105,7 +2105,7 @@
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"des":"Note the following when using default security group rules:Inbound rules control incoming traffic to instances in the default security group. The instances can communicat",
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@ -2114,7 +2114,7 @@
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"title":"Default Security Group and Rules",
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{
@ -2846,7 +2846,7 @@
"code":"150",
"des":"When you run the sudo command to switch to user root on an Ubuntu or Debian ECS, the system prompts connection timeout.Log in to the ECS.Run the following command to edit",
"doc_type":"usermanual",
"kw":"What Can I Do If Switching from a Non-root User to User root Times Out?,Troubleshooting,User Guide",
"kw":"What Can I Do If Switching from a Non-root User to a Root User Timed Out?,Troubleshooting,User Guide",
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@ -2855,7 +2855,7 @@
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"title":"What Can I Do If Switching from a Non-root User to a Root User Timed Out?",
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@ -4022,7 +4022,7 @@
"node_id":"en-us_topic_0240708483.xml",
"product_code":"ecs",
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"des":"When I attempted to remotely log in to a Linux ECS, the system displayed error Message \"Permission denied\".To resolve this issue, you are required to restart the ECS and ",
"des":"When I attempted to remotely log in to a Linux ECS, the system displayed error \"Permission denied\".To resolve this issue, you are required to restart the ECS and enter th",
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@ -4193,7 +4193,7 @@
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"des":"Windows ECSs are managed through a GUI but Linux ECSs are managed through the CLI. You can configure a GUI if required.Before installing a GUI on an ECS, ensure that the ",
"des":"Windows ECSs are managed through a GUI, but Linux ECSs are managed through the CLI. You can configure a GUI if required.Before installing a GUI on an ECS, ensure that the",
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"kw":"Do ECSs Support GUI?,OS,User Guide",
"search_title":"",

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@ -432,7 +432,7 @@
"code":"48"
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"desc":"Only a running ECS can be logged in to.For ECSs created using public images, the login usernames, passwords, and constraints vary depending on OSs running on the ECSs. Fo",
"desc":"You can only log in to a running ECS.For ECSs created using public images, the login usernames, passwords, and constraints vary depending on OSs running on the ECSs. For ",
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"title":"Login Overview (Windows)",
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@ -992,7 +992,7 @@
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"desc":"Note the following when using default security group rules:Inbound rules control incoming traffic to instances in the default security group. The instances can communicat",
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@ -1343,7 +1343,7 @@
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"desc":"When you run the sudo command to switch to user root on an Ubuntu or Debian ECS, the system prompts connection timeout.Log in to the ECS.Run the following command to edit",
"product_code":"ecs",
"title":"What Can I Do If Switching from a Non-root User to User root Times Out?",
"title":"What Can I Do If Switching from a Non-root User to a Root User Timed Out?",
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@ -1899,7 +1899,7 @@
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"desc":"When I attempted to remotely log in to a Linux ECS, the system displayed error Message \"Permission denied\".To resolve this issue, you are required to restart the ECS and ",
"desc":"When I attempted to remotely log in to a Linux ECS, the system displayed error \"Permission denied\".To resolve this issue, you are required to restart the ECS and enter th",
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<div class="section" id="EN-US_TOPIC_0000001194242043__section47861136153218"><a name="EN-US_TOPIC_0000001194242043__section47861136153218"></a><a name="section47861136153218"></a><h4 class="sectiontitle">Enabling HSS</h4><p id="EN-US_TOPIC_0000001194242043__p45070267454">Host Security Service (HSS) is designed to improve the overall security for ECSs. It helps you identify and manage the assets on your servers, eliminate risks, and defend against intrusions and web page tampering. There are also advanced protection and security operations functions available to help you easily detect and handle threats.</p>
<p id="EN-US_TOPIC_0000001194242043__p17507926134512">Before using the HSS service, install the HSS agent on your ECSs first and you will be able to check the ECS security status and risks in a region on the HSS console.</p>
<p id="EN-US_TOPIC_0000001194242043__p195099564428">We provide different methods for you to install the HSS agent depending on whether your ECSs are to be created or already exist.</p>
<ul id="EN-US_TOPIC_0000001194242043__ul1094324144611"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_li1628764893815"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_b148791426115019">Scenario 1: An ECS is to be created.</strong><p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p10374318115215">When you use certain public images to create ECSs, you are advised to use HSS to protect your ECSs.</p>
<div class="p" id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p16778114632017">Select one of the following options:<ul id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_ul338831015558"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_li1388171014558"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_b5969102415191">Advanced HSS edition (paid)</strong>: You can choose the enterprise edition and you need to pay for it.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_li32065291944"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_b7177141812260">None</strong>: HSS is disabled and servers are not protected.</li></ul>
<ul id="EN-US_TOPIC_0000001194242043__ul1094324144611"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_li1628764893815"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_b148791426115019">Scenario 1: Enable HSS during ECS creation.</strong><p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p10374318115215">When you use certain public images to create ECSs, you are advised to use HSS to protect your ECSs.</p>
<div class="p" id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p16778114632017">Select one of the following options:<ul id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_ul338831015558"><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_li1388171014558"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_b5969102415191">Advanced HSS edition (paid)</strong>: You can choose the enterprise edition.</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_li32065291944"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_en-us_topic_0163572589_b7177141812260">None</strong>: HSS is disabled and servers are not protected.</li></ul>
</div>
<p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p101282039246">After you select an HSS edition, the system automatically installs the HSS agent, enables account cracking prevention, and offers host security functions.</p>
</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_li1694354184618"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_b18674142105113">Scenario 2: An ECS is already created and HSS is not configured for it.</strong><p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p2287164823818">For an existing ECS without HSS configured, you can manually install an Agent on it.</p>
</li><li id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_li1694354184618"><strong id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_b18674142105113">Scenario 2: Enable HSS for an existing ECS.</strong><p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p2287164823818">If HSS is not enabled on an existing ECS, you can manually install an agent to use HSS.</p>
<p id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_p10894750103612">For details, see the <em id="EN-US_TOPIC_0000001194242043__en-us_topic_0206596990_i209821797163019">Host Security Service User Guide</em>.</p>
</li></ul>
</div>

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@ -9,14 +9,14 @@
</div></div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0013771110__section1777940307"><h4 class="sectiontitle">Stopping ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol178640702"><li id="EN-US_TOPIC_0013771110__li1138213151040">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li16781401508">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0000001825604541_image9499446838_1" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0013771110__li37815401503">Under <strong id="EN-US_TOPIC_0013771110__b1889727381"><span id="EN-US_TOPIC_0013771110__text634552360">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b1769095815">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li17788401701">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li1978340107">Click <strong id="EN-US_TOPIC_0013771110__b12444104218120">Stop</strong> above the ECS list.</li><li id="EN-US_TOPIC_0013771110__li1622618482513">In the displayed dialog box, select <strong id="EN-US_TOPIC_0013771110__b86757252614">Forcibly stop the preceding ECSs</strong> based on your service requirements.<div class="caution" id="EN-US_TOPIC_0013771110__note13660133123616"><span class="cautiontitle"><img src="public_sys-resources/caution_3.0-en-us.png"> </span><div class="cautionbody"><p id="EN-US_TOPIC_0013771110__p17595816128">After an ECS is forcibly stopped, unsaved data on the ECS will be lost.</p>
<div class="section" id="EN-US_TOPIC_0013771110__section1777940307"><h4 class="sectiontitle">Stopping ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol178640702"><li id="EN-US_TOPIC_0013771110__li1138213151040">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li16781401508">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0000001825604541_image9499446838_1" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0013771110__li37815401503">Under <strong id="EN-US_TOPIC_0013771110__b1892394429"><span id="EN-US_TOPIC_0013771110__text1420329547">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b136848594">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li17788401701">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li1978340107">Click <strong id="EN-US_TOPIC_0013771110__b12444104218120">Stop</strong> above the ECS list.</li><li id="EN-US_TOPIC_0013771110__li1622618482513">In the displayed dialog box, select <strong id="EN-US_TOPIC_0013771110__b86757252614">Forcibly stop the preceding ECSs</strong> based on your service requirements.<div class="caution" id="EN-US_TOPIC_0013771110__note13660133123616"><span class="cautiontitle"><img src="public_sys-resources/caution_3.0-en-us.png"> </span><div class="cautionbody"><p id="EN-US_TOPIC_0013771110__p17595816128">After an ECS is forcibly stopped, unsaved data on the ECS will be lost.</p>
<p id="EN-US_TOPIC_0013771110__p51026124329">ECSs with physical flavors, such as C7t ECSs, only support the force stop option. Ensure that you have saved all files on those ECSs.</p>
</div></div>
</li><li id="EN-US_TOPIC_0013771110__li16794406015">Click <strong id="EN-US_TOPIC_0013771110__b196941158456">OK</strong> to stop the selected ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note1179134019014"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p19793401906">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1353172617618">Stopping</strong> state for more than 30 minutes.</p>
</div></div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0013771110__section520563714015"><h4 class="sectiontitle">Restarting ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol1020563717017"><li id="EN-US_TOPIC_0013771110__li6817625745">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li62063371603">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0000001825604541_image9499446838_2" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0013771110__li42063371017">Under <strong id="EN-US_TOPIC_0013771110__b890540197"><span id="EN-US_TOPIC_0013771110__text229173309">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b2006922228">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li122061376016">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li5206123715017">Click <strong id="EN-US_TOPIC_0013771110__b1318820253711">Restart</strong> above the ECS list.<div class="caution" id="EN-US_TOPIC_0013771110__note2525114373617"><span class="cautiontitle"><img src="public_sys-resources/caution_3.0-en-us.png"> </span><div class="cautionbody"><p id="EN-US_TOPIC_0013771110__p11653140141014">After an ECS is forcibly restarted, unsaved data on the ECS will be lost.</p>
<div class="section" id="EN-US_TOPIC_0013771110__section520563714015"><h4 class="sectiontitle">Restarting ECSs</h4><ol id="EN-US_TOPIC_0013771110__ol1020563717017"><li id="EN-US_TOPIC_0013771110__li6817625745">Log in to the management console.</li><li id="EN-US_TOPIC_0013771110__li62063371603">Click <span><img id="EN-US_TOPIC_0013771110__en-us_topic_0000001825604541_image9499446838_2" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0013771110__li42063371017">Under <strong id="EN-US_TOPIC_0013771110__b1468136568"><span id="EN-US_TOPIC_0013771110__text112736530">Computing</span></strong>, select <strong id="EN-US_TOPIC_0013771110__b325060338">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0013771110__li122061376016">In the ECS list, select the target ECSs.</li><li id="EN-US_TOPIC_0013771110__li5206123715017">Click <strong id="EN-US_TOPIC_0013771110__b1318820253711">Restart</strong> above the ECS list.<div class="caution" id="EN-US_TOPIC_0013771110__note2525114373617"><span class="cautiontitle"><img src="public_sys-resources/caution_3.0-en-us.png"> </span><div class="cautionbody"><p id="EN-US_TOPIC_0013771110__p11653140141014">After an ECS is forcibly restarted, unsaved data on the ECS will be lost.</p>
</div></div>
</li><li id="EN-US_TOPIC_0013771110__li920773710015">Click <strong id="EN-US_TOPIC_0013771110__b45781140971">OK</strong> to restart the selected ECSs.<div class="note" id="EN-US_TOPIC_0013771110__note162076371706"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0013771110__p620715371007">Contact the administrator if the ECS has been in the <strong id="EN-US_TOPIC_0013771110__b1998114319719">Restarting</strong> state for more than 30 minutes.</p>
</div></div>

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<div id="body1437210781594"><div class="section" id="EN-US_TOPIC_0017955381__section119451029135512"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0017955381__p2051937011921">This section describes how to use the remote login tool MSTSC to log in to a Windows <span id="EN-US_TOPIC_0017955381__text1360192010129">ECS</span> from a local computer.</p>
</div>
<div class="section" id="EN-US_TOPIC_0017955381__section30111449112059"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0017955381__ul23108310112059"><li id="EN-US_TOPIC_0017955381__li18354497116">The target <span id="EN-US_TOPIC_0017955381__text1740721175119">ECS</span> is running.</li><li id="EN-US_TOPIC_0017955381__li21744107205119">You have obtained the password for logging in to the Windows ECS. For details, see <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</li><li id="EN-US_TOPIC_0017955381__li6648204112059">You have bound an <span id="EN-US_TOPIC_0017955381__text629743012918">EIP</span> to the <span id="EN-US_TOPIC_0017955381__text11297143011293">ECS</span>. For details, see <a href="en-us_topic_0174917535.html">Binding an EIP</a>.</li></ul>
<ul id="EN-US_TOPIC_0017955381__ul59833840112059"><li id="EN-US_TOPIC_0017955381__li1633651112059">Access to port 3389 is allowed in the inbound direction of the security group that the ECS belongs to. For details, see <a href="en-us_topic_0030878383.html">Configuring Security Group Rules</a>.</li><li id="EN-US_TOPIC_0017955381__li39291782164659">The network connection between the login tool and the target <span id="EN-US_TOPIC_0017955381__text1162262525210">ECS</span> is normal. For example, the default port 3389 is not blocked by the firewall.</li><li id="EN-US_TOPIC_0017955381__li1180914813562">Remote Desktop Protocol (RDP) needs to be enabled on the target <span id="EN-US_TOPIC_0017955381__text16646742165210">ECS</span>. For <span id="EN-US_TOPIC_0017955381__text5312114445215">ECS</span>s created using public images, RDP has been enabled by default. For instructions about how to enable RDP, see <a href="#EN-US_TOPIC_0017955381__section65216898112059">Enabling RDP</a>.</li></ul>
<ul id="EN-US_TOPIC_0017955381__ul59833840112059"><li id="EN-US_TOPIC_0017955381__li1633651112059">Access to port 3389 is allowed in the inbound direction of the security group that the ECS belongs to. For details, see <a href="en-us_topic_0030878383.html">Configuring Security Group Rules</a>.</li><li id="EN-US_TOPIC_0017955381__li39291782164659">The network connection between the login tool and the target <span id="EN-US_TOPIC_0017955381__text1162262525210">ECS</span> is normal. For example, the default port 3389 is not blocked by the firewall.</li><li id="EN-US_TOPIC_0017955381__li1180914813562">Remote Desktop Protocol (RDP) needs to be enabled on the target <span id="EN-US_TOPIC_0017955381__text1056983141216">ECS</span>. For details, see <a href="#EN-US_TOPIC_0017955381__section65216898112059">Enabling RDP</a>.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0017955381__section1011913410314"><h4 class="sectiontitle">Logging In to a Windows ECS Using MSTSC</h4><p id="EN-US_TOPIC_0017955381__p16299256133">If your local server runs Windows, you can use the remote desktop connection tool MSTSC delivered with the Windows OS to log in to a Windows <span id="EN-US_TOPIC_0017955381__text12183161512">ECS</span>.</p>
<ol id="EN-US_TOPIC_0017955381__ol8411414453"><li id="EN-US_TOPIC_0017955381__li1341101415517">Click the start menu on the local server.</li><li id="EN-US_TOPIC_0017955381__li11411121415519">In the <strong id="EN-US_TOPIC_0017955381__b84235270694226">Search programs and files</strong> text box, enter <strong id="EN-US_TOPIC_0017955381__b84235270694448">mstsc</strong>.</li><li id="EN-US_TOPIC_0017955381__li171035522613">In the <strong id="EN-US_TOPIC_0017955381__b84235270694543">Remote Desktop Connection</strong> dialog box, click <strong id="EN-US_TOPIC_0017955381__b8423527069463">Show Options</strong>.<div class="fignone" id="EN-US_TOPIC_0017955381__en-us_topic_0027290684_fig22996848191913"><span class="figcap"><b>Figure 1 </b>Showing options</span><br><span><img id="EN-US_TOPIC_0017955381__image1150418145412" src="en-us_image_0295941039.png" title="Click to enlarge" class="imgResize"></span></div>
@ -19,9 +19,7 @@
</li><li id="EN-US_TOPIC_0017955381__li20171183316190">Click <strong id="EN-US_TOPIC_0017955381__b1481213617304">Connect</strong> and enter the login password as prompted to log in to the ECS.<p id="EN-US_TOPIC_0017955381__p2411121419511">To ensure system security, change the login password after you log in to the ECS for the first time.</p>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0017955381__section65216898112059"><a name="EN-US_TOPIC_0017955381__section65216898112059"></a><a name="section65216898112059"></a><h4 class="sectiontitle">Enabling RDP</h4><div class="p" id="EN-US_TOPIC_0017955381__p48077410112059">For your first login, use VNC to log in and enable RDP for your ECS. Then, use MSTSC to log in.<div class="note" id="EN-US_TOPIC_0017955381__note5638113513711"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0017955381__p1527414171983">RDP is enabled by default for ECSs created using public images.</p>
</div></div>
<ol id="EN-US_TOPIC_0017955381__ol32949349111118"><li id="EN-US_TOPIC_0017955381__li56723037111118">Log in to the Windows <span id="EN-US_TOPIC_0017955381__text34341437111211">ECS</span> using VNC.<p id="EN-US_TOPIC_0017955381__p2050535911424">For details, see <a href="en-us_topic_0027268511.html">Logging In to a Windows ECS Using VNC</a>.</p>
<div class="section" id="EN-US_TOPIC_0017955381__section65216898112059"><a name="EN-US_TOPIC_0017955381__section65216898112059"></a><a name="section65216898112059"></a><h4 class="sectiontitle">Enabling RDP</h4><div class="p" id="EN-US_TOPIC_0017955381__p48077410112059">For your first login, use VNC to log in and enable RDP for your ECS. Then, use MSTSC to log in.<ol id="EN-US_TOPIC_0017955381__ol32949349111118"><li id="EN-US_TOPIC_0017955381__li56723037111118">Log in to the Windows <span id="EN-US_TOPIC_0017955381__text34341437111211">ECS</span> using VNC.<p id="EN-US_TOPIC_0017955381__p2050535911424">For details, see <a href="en-us_topic_0027268511.html">Logging In to a Windows ECS Using VNC</a>.</p>
</li><li id="EN-US_TOPIC_0017955381__li27377399113414">Click <strong id="EN-US_TOPIC_0017955381__b842352706141917">Start</strong> in the task bar and choose <strong id="EN-US_TOPIC_0017955381__b84235270614388">Control Panel</strong> &gt; <strong id="EN-US_TOPIC_0017955381__b842352706143812">System and Security</strong> &gt; <strong id="EN-US_TOPIC_0017955381__b842352706143816">System</strong> &gt; <strong id="EN-US_TOPIC_0017955381__b842352706143824">Remote settings</strong>.<p id="EN-US_TOPIC_0017955381__p12062548113415">The <strong id="EN-US_TOPIC_0017955381__b842352706144010">System Properties</strong> dialog box is displayed.</p>
<div class="fignone" id="EN-US_TOPIC_0017955381__fig276023113838"><span class="figcap"><b>Figure 6 </b>System Properties</span><br><span><img id="EN-US_TOPIC_0017955381__image22357863113838" src="en-us_image_0049287308.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0017955381__li23748224113443">Click the <strong id="EN-US_TOPIC_0017955381__b842352706144047">Remote</strong> tab and select <strong id="EN-US_TOPIC_0017955381__b842352706144218">Allow remote connections to this computer</strong>.</li><li id="EN-US_TOPIC_0017955381__li34570216113530">Click <strong id="EN-US_TOPIC_0017955381__b196862515418">OK</strong>.</li></ol>

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<a name="EN-US_TOPIC_0018078523"></a><a name="EN-US_TOPIC_0018078523"></a>
<h1 class="topictitle1">Do ECSs Support GUI?</h1>
<div id="body1437566841621"><p id="EN-US_TOPIC_0018078523__p8060118">Windows ECSs are managed through a GUI but Linux ECSs are managed through the CLI. You can configure a GUI if required.</p>
<div id="body1437566841621"><p id="EN-US_TOPIC_0018078523__p8060118">Windows ECSs are managed through a GUI, but Linux ECSs are managed through the CLI. You can configure a GUI if required.</p>
<p id="EN-US_TOPIC_0018078523__p146021958204613">Before installing a GUI on an ECS, ensure that the idle memory is greater than or equal to 2 GiB. Otherwise, the GUI installation may fail or the ECS cannot be started after the installation.</p>
<div class="p" id="EN-US_TOPIC_0018078523__p888761105710">For details about how to install a Linux OS on the GUI, see the following:<ul id="EN-US_TOPIC_0018078523__ul1354413284110"><li id="EN-US_TOPIC_0018078523__li11544132812113"><a href="en-us_topic_0116634723.html">How Can I Install a GUI on an ECS Running CentOS 6?</a></li><li id="EN-US_TOPIC_0018078523__li145449281516"><a href="en-us_topic_0101604498.html">How Can I Install a GUI on an ECS Running CentOS 7?</a></li><li id="EN-US_TOPIC_0018078523__li12544928611"><a href="en-us_topic_0155136016.html">How Can I Install a GUI on an ECS Running Ubuntu?</a></li><li id="EN-US_TOPIC_0018078523__li185441328014"><a href="en-us_topic_0000001210472883.html">How Can I Install a GUI on an ECS Running Debian?</a></li></ul>
<div class="p" id="EN-US_TOPIC_0018078523__p888761105710">For details about how to install a GUI on a Linux OS, see the following:<ul id="EN-US_TOPIC_0018078523__ul1354413284110"><li id="EN-US_TOPIC_0018078523__li11544132812113"><a href="en-us_topic_0116634723.html">How Can I Install a GUI on an ECS Running CentOS 6?</a></li><li id="EN-US_TOPIC_0018078523__li145449281516"><a href="en-us_topic_0101604498.html">How Can I Install a GUI on an ECS Running CentOS 7?</a></li><li id="EN-US_TOPIC_0018078523__li12544928611"><a href="en-us_topic_0155136016.html">How Can I Install a GUI on an ECS Running Ubuntu?</a></li><li id="EN-US_TOPIC_0018078523__li185441328014"><a href="en-us_topic_0000001210472883.html">How Can I Install a GUI on an ECS Running Debian?</a></li></ul>
</div>
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</div>
<div class="section" id="EN-US_TOPIC_0021426802__section1052621215437"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0021426802__ol11891624125717"><li id="EN-US_TOPIC_0021426802__li168911724165711">Stop the original ECS and detach the system disk.<ol type="a" id="EN-US_TOPIC_0021426802__ol64363114145227"><li id="EN-US_TOPIC_0021426802__li1151341720102">Log in to the management console.</li><li id="EN-US_TOPIC_0021426802__li464234814566">Click <span><img id="EN-US_TOPIC_0021426802__en-us_topic_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0021426802__li32846719144331">Under <strong id="EN-US_TOPIC_0021426802__b37391728971"><span id="EN-US_TOPIC_0021426802__text2739128471">Computing</span></strong>, click <strong id="EN-US_TOPIC_0021426802__b1673922817716">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0021426802__li16925428202157">Stop the original Windows <span id="EN-US_TOPIC_0021426802__text131511138202011">ECS</span>, switch to the ECS details page, and click the <strong id="EN-US_TOPIC_0021426802__b551913512188">Disks</strong> tab.<div class="note" id="EN-US_TOPIC_0021426802__note32654683101914"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0021426802__p25456698101914">Do not forcibly stop the Windows <span id="EN-US_TOPIC_0021426802__text15900121411184">ECS</span>. Otherwise, password reset may fail.</p>
</div></div>
</li><li id="EN-US_TOPIC_0021426802__li49674320202157"><a name="EN-US_TOPIC_0021426802__li49674320202157"></a><a name="li49674320202157"></a>Locate the row containing the system disk to be detached and click <strong id="EN-US_TOPIC_0021426802__b129721858184120">Detach</strong> to detach the system disk from the ECS.</li></ol>
</li><li id="EN-US_TOPIC_0021426802__li49674320202157"><a name="EN-US_TOPIC_0021426802__li49674320202157"></a><a name="li49674320202157"></a>Locate the row containing the system disk and click <strong id="EN-US_TOPIC_0021426802__b129721858184120">Detach</strong> to detach the system disk from the ECS.</li></ol>
</li><li id="EN-US_TOPIC_0021426802__li7881114019576">Attach the system disk to the temporary ECS.<ol type="a" id="EN-US_TOPIC_0021426802__ol774330520859"><li id="EN-US_TOPIC_0021426802__li1035192041616">On the details page of the temporary <span id="EN-US_TOPIC_0021426802__text48384863314">ECS</span>, click the <strong id="EN-US_TOPIC_0021426802__b118314814330">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021426802__li12352182016164"><a name="EN-US_TOPIC_0021426802__li12352182016164"></a><a name="li12352182016164"></a>Click <strong id="EN-US_TOPIC_0021426802__b4385152303414">Attach Disk</strong>. In the displayed dialog box, select the system disk detached in step <a href="#EN-US_TOPIC_0021426802__li49674320202157">1.e</a> and attach it to the temporary ECS.</li><li id="EN-US_TOPIC_0021426802__li1800111611817">Remotely log in to the temporary ECS.</li><li id="EN-US_TOPIC_0021426802__li20334892202157">Run the following command to query the system disk partitions attached to the temporary <span id="EN-US_TOPIC_0021426802__text1391538162013">ECS</span>, so you can identify the directory of the system disk:<p id="EN-US_TOPIC_0021426802__p48796301202157"><strong id="EN-US_TOPIC_0021426802__b48318482201615">fdisk -l</strong></p>
</li><li id="EN-US_TOPIC_0021426802__li60186269202157">Run the following command to mount the file system of the detached system disk to the temporary <span id="EN-US_TOPIC_0021426802__text445634112010">ECS</span>:<p id="EN-US_TOPIC_0021426802__p53702024202157"><strong id="EN-US_TOPIC_0021426802__b892711320383">mount -t ntfs-3g /dev/</strong><em id="EN-US_TOPIC_0021426802__i109785384">system-disk-directory</em> <strong id="EN-US_TOPIC_0021426802__b15201297382">/mnt/</strong></p>
</li><li id="EN-US_TOPIC_0021426802__li60186269202157">Run the following command to mount the file system of the detached system disk to the temporary <span id="EN-US_TOPIC_0021426802__text445634112010">ECS</span>:<p id="EN-US_TOPIC_0021426802__p53702024202157"><strong id="EN-US_TOPIC_0021426802__b892711320383">mount -t ntfs-3g /dev/</strong><em id="EN-US_TOPIC_0021426802__i109785384">&lt;system-disk-directory&gt;</em> <strong id="EN-US_TOPIC_0021426802__b15201297382">/mnt/</strong></p>
<p id="EN-US_TOPIC_0021426802__p34288713202157">For example, if the queried system disk directory is xvde2, run the following command:</p>
<p id="EN-US_TOPIC_0021426802__p25922364202157"><strong id="EN-US_TOPIC_0021426802__b33457650195745">mount -t ntfs-3g /dev/xvde2 /mnt/</strong></p>
<p id="EN-US_TOPIC_0021426802__p17614416321">If the following error information is returned in the command output, the NTFS file systems between the original Windows <span id="EN-US_TOPIC_0021426802__text1666202417418">ECS</span> and the Linux <span id="EN-US_TOPIC_0021426802__text1212113454111">ECS</span> may be inconsistent.</p>
<p id="EN-US_TOPIC_0021426802__p17614416321">If the error information below is returned in the command output, the NTFS file systems between the original Windows <span id="EN-US_TOPIC_0021426802__text1666202417418">ECS</span> and the Linux <span id="EN-US_TOPIC_0021426802__text1212113454111">ECS</span> may be inconsistent.</p>
<pre class="screen" id="EN-US_TOPIC_0021426802__screen5738041498">The disk contains an unclean file system (0, 0).
Metadata kept in Windows cache, refused to mount.
Failed to mount '/dev/xvde2': Operation not permitted
@ -43,8 +43,8 @@ Hives that have changed:
Write hive files? (y/n) [n] : y
0&lt;SAM&gt; - OK</pre>
</li></ol>
</li><li id="EN-US_TOPIC_0021426802__li142801656586">Stop the temporary <span id="EN-US_TOPIC_0021426802__text190442162015">ECS</span>, detach the system disk, and attach the system disk to the original Windows <span id="EN-US_TOPIC_0021426802__text2017694472113">ECS</span>.<ol type="a" id="EN-US_TOPIC_0021426802__ol3839776920224"><li id="EN-US_TOPIC_0021426802__li5152044202157">Stop the temporary <span id="EN-US_TOPIC_0021426802__text87991434202">ECS</span>, go to the <span id="EN-US_TOPIC_0021426802__text73580442210">ECS</span> details page, and click the <strong id="EN-US_TOPIC_0021426802__b112952071229">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021426802__li46368402202157"><a name="EN-US_TOPIC_0021426802__li46368402202157"></a><a name="li46368402202157"></a>Click <strong id="EN-US_TOPIC_0021426802__b842352706163715">Detach</strong> to detach the system disk temporarily attached in step <a href="#EN-US_TOPIC_0021426802__li12352182016164">2.b</a>.</li><li id="EN-US_TOPIC_0021426802__li48376692165527">On the details page of the original Windows <span id="EN-US_TOPIC_0021426802__text9274774373">ECS</span>, click the <strong id="EN-US_TOPIC_0021426802__b027412743720">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021426802__li33256079202157">Click <strong id="EN-US_TOPIC_0021426802__b842352706163842">Attach Disk</strong>. In the displayed dialog box, select the system disk detached in step <a href="#EN-US_TOPIC_0021426802__li46368402202157">4.b</a> and attach it to the original ECS as the system disk.</li></ol>
</li><li id="EN-US_TOPIC_0021426802__li1373201565812">Start the original Windows <span id="EN-US_TOPIC_0021426802__text223994542019">ECS</span> and set a new login password.<ol type="a" id="EN-US_TOPIC_0021426802__ol39255285195729"><li id="EN-US_TOPIC_0021426802__li9387854202157">Click <strong id="EN-US_TOPIC_0021426802__b842352706112216">Start</strong> to start the original Windows <span id="EN-US_TOPIC_0021426802__text123151210142310">ECS</span>. After the status becomes <strong id="EN-US_TOPIC_0021426802__b842352706112223">Running</strong>, click <strong id="EN-US_TOPIC_0021426802__b842352706112228">Remote Login</strong> in the <strong id="EN-US_TOPIC_0021426802__b842352706112231">Operation</strong> column.</li><li id="EN-US_TOPIC_0021426802__li65750554202157">Click <strong id="EN-US_TOPIC_0021426802__b842352706164129">Start</strong>. Enter <strong id="EN-US_TOPIC_0021426802__b842352706152134">CMD</strong> in the search box and press <strong id="EN-US_TOPIC_0021426802__b842352706152136">Enter</strong>.</li><li id="EN-US_TOPIC_0021426802__li24194619202157">Run the following command to set a new password. The new password must meet the password complexity requirements described in <a href="en-us_topic_0035643949.html">Overview of Password Reset</a>.<p id="EN-US_TOPIC_0021426802__p13607117202157"><strong id="EN-US_TOPIC_0021426802__b5331115091414">net user</strong> <strong id="EN-US_TOPIC_0021426802__b53311150111415">Administrator</strong> <em id="EN-US_TOPIC_0021426802__i1033165019140">&lt;new-password&gt;</em></p>
</li><li id="EN-US_TOPIC_0021426802__li142801656586">Stop the temporary <span id="EN-US_TOPIC_0021426802__text190442162015">ECS</span>, detach the system disk, and attach the system disk back to the original Windows <span id="EN-US_TOPIC_0021426802__text2017694472113">ECS</span>.<ol type="a" id="EN-US_TOPIC_0021426802__ol3839776920224"><li id="EN-US_TOPIC_0021426802__li5152044202157">Stop the temporary <span id="EN-US_TOPIC_0021426802__text87991434202">ECS</span>, go to the <span id="EN-US_TOPIC_0021426802__text73580442210">ECS</span> details page, and click the <strong id="EN-US_TOPIC_0021426802__b112952071229">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021426802__li46368402202157"><a name="EN-US_TOPIC_0021426802__li46368402202157"></a><a name="li46368402202157"></a>Click <strong id="EN-US_TOPIC_0021426802__b842352706163715">Detach</strong> to detach the system disk temporarily attached in step <a href="#EN-US_TOPIC_0021426802__li12352182016164">2.b</a>.</li><li id="EN-US_TOPIC_0021426802__li48376692165527">On the details page of the original Windows <span id="EN-US_TOPIC_0021426802__text9274774373">ECS</span>, click the <strong id="EN-US_TOPIC_0021426802__b027412743720">Disks</strong> tab.</li><li id="EN-US_TOPIC_0021426802__li33256079202157">Click <strong id="EN-US_TOPIC_0021426802__b842352706163842">Attach Disk</strong>. In the displayed dialog box, select the system disk detached in step <a href="#EN-US_TOPIC_0021426802__li46368402202157">4.b</a> and attach it to the original ECS as the system disk.</li></ol>
</li><li id="EN-US_TOPIC_0021426802__li1373201565812">Start the original Windows <span id="EN-US_TOPIC_0021426802__text223994542019">ECS</span> and set a new login password.<ol type="a" id="EN-US_TOPIC_0021426802__ol39255285195729"><li id="EN-US_TOPIC_0021426802__li9387854202157">Click <strong id="EN-US_TOPIC_0021426802__b842352706112216">Start</strong> to start the original Windows <span id="EN-US_TOPIC_0021426802__text123151210142310">ECS</span>. After the status becomes <strong id="EN-US_TOPIC_0021426802__b842352706112223">Running</strong>, click <strong id="EN-US_TOPIC_0021426802__b842352706112228">Remote Login</strong> in the <strong id="EN-US_TOPIC_0021426802__b842352706112231">Operation</strong> column.</li><li id="EN-US_TOPIC_0021426802__li65750554202157">Click <strong id="EN-US_TOPIC_0021426802__b842352706164129">Start</strong>. Enter <strong id="EN-US_TOPIC_0021426802__b842352706152134">CMD</strong> in the search box and press <strong id="EN-US_TOPIC_0021426802__b842352706152136">Enter</strong>.</li><li id="EN-US_TOPIC_0021426802__li24194619202157">Run the command below to set a new password. The new password must meet the password complexity requirements. For details, see <a href="en-us_topic_0035643949.html">Overview of Password Reset</a>.<p id="EN-US_TOPIC_0021426802__p13607117202157"><strong id="EN-US_TOPIC_0021426802__b5331115091414">net user</strong> <strong id="EN-US_TOPIC_0021426802__b53311150111415">Administrator</strong> <em id="EN-US_TOPIC_0021426802__i1033165019140">&lt;new-password&gt;</em></p>
</li></ol>
</li></ol>
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</div>
<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__li14469519145710">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_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a 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__b186547812360"><span id="EN-US_TOPIC_0024911405__text10653285367">Computing</span></strong>, click <strong id="EN-US_TOPIC_0024911405__b116541580369">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0024911405__li237311112214">Locate the row containing the target <span id="EN-US_TOPIC_0024911405__text98741103374">ECS</span> and choose <strong id="EN-US_TOPIC_0024911405__b1487431023717">More</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b38751410113715">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b787591017371">Reinstall OS</strong> in the <strong id="EN-US_TOPIC_0024911405__b188750101378">Operation</strong> column.<p id="EN-US_TOPIC_0024911405__p10373171117212">Only stopped ECSs support OS reinstallation. If the <span id="EN-US_TOPIC_0024911405__text233171135">ECS</span> is not stopped, stop it before proceeding with reinstallation.</p>
<div class="section" id="EN-US_TOPIC_0024911405__section58299059111554"><a name="EN-US_TOPIC_0024911405__section58299059111554"></a><a name="section58299059111554"></a><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0024911405__ol22026412143346"><li id="EN-US_TOPIC_0024911405__li14469519145710">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_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0031523135_en-us_topic_0024911405_li45082966143628">Under <strong id="EN-US_TOPIC_0024911405__b8848192173019"><span id="EN-US_TOPIC_0024911405__text1980763462719">Computing</span></strong>, click <strong id="EN-US_TOPIC_0024911405__b184817215309">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0024911405__li237311112214">Locate the row containing the target <span id="EN-US_TOPIC_0024911405__text98741103374">ECS</span> and choose <strong id="EN-US_TOPIC_0024911405__b1487431023717">More</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b38751410113715">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0024911405__b787591017371">Reinstall OS</strong> in the <strong id="EN-US_TOPIC_0024911405__b188750101378">Operation</strong> column.<p id="EN-US_TOPIC_0024911405__p10373171117212">Only stopped ECSs support OS reinstallation. If the <span id="EN-US_TOPIC_0024911405__text1039504800">ECS</span> is not stopped, stop it before proceeding with the reinstallation.</p>
<div class="fignone" id="EN-US_TOPIC_0024911405__fig44511950164"><span class="figcap"><b>Figure 1 </b>Reinstalling an OS</span><br><span><img id="EN-US_TOPIC_0024911405__image131496356577" src="en-us_image_0000002524673400.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0024911405__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0024911405__b67851632192510">Encrypted</strong> option to encrypt the system disk during OS reinstallation.<p id="EN-US_TOPIC_0024911405__p767712438280">To enable encryption, click <span class="uicontrol" id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_uicontrol528614138616"><b>Create Xrole</b></span> to grant KMS access permissions to EVS. If you have the granting permission, grant KMS access permissions to EVS. If you do not have the granting permission, contact the user who has the Security Administrator permissions to grant KMS access permissions. For details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a></p>
<p id="EN-US_TOPIC_0024911405__en-us_topic_0144542112_p228631310615">Encryption parameters are as follows:</p>
<ul id="EN-US_TOPIC_0024911405__en-us_topic_0144542112_ul202865131169"><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li14286813962"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b84235270618740">Encryption</strong>: indicates that the EVS disk has been encrypted.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li182868131664"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b95921745110">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_b1954192512113">Xrole Name</strong>: set to <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b995482512219">EVSAccessKMS</strong>, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li152868131619"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b959511561916">KMS Key Name</strong>: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b2406645144311">Create KMS Key</strong> and create a new one on the KMS console. The default value is <strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_b626615844413">evs/default</strong>.</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0144542112_li528671319610"><strong id="EN-US_TOPIC_0024911405__en-us_topic_0163572589_en-us_topic_0013859510_b842352706155046">KMS Key ID</strong>: specifies the ID of the key used by the encrypted data disk.</li></ul>
</li><li id="EN-US_TOPIC_0024911405__li23576357205117">(Optional) Select a <strong id="EN-US_TOPIC_0024911405__b84235270615319">License Type</strong> (<strong id="EN-US_TOPIC_0024911405__b842352706153129">Use license from the system</strong> or <strong id="EN-US_TOPIC_0024911405__b842352706153134">Bring your own license (BYOL)</strong>) if the reinstalled OS running on your ECS is billed. For more details, see <a href="en-us_topic_0046566932.html">License Types</a>.<p id="EN-US_TOPIC_0024911405__p46529483205117">The following OSs are billed:</p>
<ul id="EN-US_TOPIC_0024911405__ul55183157205155"><li id="EN-US_TOPIC_0024911405__en-us_topic_0046566932_li2586589022251">SUSE Linux Enterprise Server</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0046566932_li6521605722253">Oracle Enterprise Linux</li><li id="EN-US_TOPIC_0024911405__en-us_topic_0046566932_li37000181205155">Red Hat Enterprise Linux</li></ul>
</li><li id="EN-US_TOPIC_0024911405__li65835346143541">Select the login mode.<p id="EN-US_TOPIC_0024911405__p35928679153231"><a name="EN-US_TOPIC_0024911405__li65835346143541"></a><a name="li65835346143541"></a>If the target <span id="EN-US_TOPIC_0024911405__text22614242316">ECS</span> uses key pair authentication, you can replace the original key pair.</p>
<div class="fignone" id="EN-US_TOPIC_0024911405__fig183274472412"><span class="figcap"><b>Figure 1 </b>Reinstalling an OS</span><br><span><img id="EN-US_TOPIC_0024911405__image9153135512403" src="en-us_image_0000002351471046.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0024911405__li55647207143541">Click <strong id="EN-US_TOPIC_0024911405__b32047965114410">OK</strong>.</li><li id="EN-US_TOPIC_0024911405__li31062819143541"><a name="EN-US_TOPIC_0024911405__li31062819143541"></a><a name="li31062819143541"></a>In the <strong id="EN-US_TOPIC_0024911405__b1588348205120">ECS OS Reinstallation</strong> dialog box, confirm the settings, and click <strong id="EN-US_TOPIC_0024911405__b15883108125118">Submit</strong>.<div class="p" id="EN-US_TOPIC_0024911405__p3796675416556">After the request is submitted, the status <strong id="EN-US_TOPIC_0024911405__b84235270616717">Reinstalling</strong> is displayed. When this status disappears, the reinstallation is complete.<div class="note" id="EN-US_TOPIC_0024911405__note8958845143541"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0024911405__p13520745143541">During the reinstallation process, a temporary <span id="EN-US_TOPIC_0024911405__text11832184415256">ECS</span> is created. After the reinstallation is complete, this <span id="EN-US_TOPIC_0024911405__text976155011257">ECS</span> will be automatically deleted. Do not perform any operation on the temporary <span id="EN-US_TOPIC_0024911405__text97141831172413">ECS</span> during the reinstallation process.</p>
</li><li id="EN-US_TOPIC_0024911405__li65835346143541">Set <strong id="EN-US_TOPIC_0024911405__b39818181114">Login Mode</strong>.<p id="EN-US_TOPIC_0024911405__p1867192141111">You can set the login mode for the <span id="EN-US_TOPIC_0024911405__text1214370115219">ECS</span> whose OS is to be reinstalled based on service requirements.</p>
<ul id="EN-US_TOPIC_0024911405__ul10805308168"><li id="EN-US_TOPIC_0024911405__li118051103162">Key pair<p id="EN-US_TOPIC_0024911405__p14520650279"><a name="EN-US_TOPIC_0024911405__li118051103162"></a><a name="li118051103162"></a>If you select <strong id="EN-US_TOPIC_0024911405__b163044018411">Key pair</strong> for <strong id="EN-US_TOPIC_0024911405__b341474710418">Login Mode</strong>, select an existing key pair from the drop-down list or create a key pair. For details, see <a href="en-us_topic_0000001278350057.html">(Recommended) Creating a Key Pair on the Management Console</a>.</p>
<div class="note" id="EN-US_TOPIC_0024911405__note584115373818"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0024911405__p148418371085">If you use an existing key pair, make sure that you have saved the key file locally. Otherwise, logging in to the ECS will fail.</p>
</div></div>
</li></ul>
</li><li id="EN-US_TOPIC_0024911405__li55647207143541">Click <strong id="EN-US_TOPIC_0024911405__b0296192810323">OK</strong>.</li><li id="EN-US_TOPIC_0024911405__li31062819143541">On the <strong id="EN-US_TOPIC_0024911405__b1779418012115">Reinstall OS</strong> page, confirm the settings and click <strong id="EN-US_TOPIC_0024911405__b147951709118">OK</strong>.<div class="p" id="EN-US_TOPIC_0024911405__p3796675416556">After the request is submitted, the status <strong id="EN-US_TOPIC_0024911405__b84235270616717">Reinstalling</strong> is displayed. When this status disappears, the reinstallation is complete.<div class="note" id="EN-US_TOPIC_0024911405__note8958845143541"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0024911405__p13520745143541">During the reinstallation process, a temporary <span id="EN-US_TOPIC_0024911405__text11832184415256">ECS</span> is created. After the reinstallation is complete, this <span id="EN-US_TOPIC_0024911405__text976155011257">ECS</span> will be automatically deleted. Do not perform any operation on the temporary <span id="EN-US_TOPIC_0024911405__text97141831172413">ECS</span> during the reinstallation process.</p>
</div></div>
</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 fails, 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>
<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 system displays a message indicating that the reinstallation fails, you can perform steps in <a href="#EN-US_TOPIC_0024911405__section58299059111554">Procedure</a> again to retry the OS installation.</p>
<p id="EN-US_TOPIC_0024911405__p28308785143318">If the attempt still fails, contact customer service for manual recovery at the backend.</p>
</div>
</div>

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@ -708,7 +708,7 @@
</div>
</li><li id="EN-US_TOPIC_0027268511__li48438585164848">If the password used when you create the ECS is entered using the English keyboard, you must use the English keyboard to enter the password when logging in to the ECS later.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0027268511__section46750509111459"><a name="EN-US_TOPIC_0027268511__section46750509111459"></a><a name="section46750509111459"></a><h4 class="sectiontitle">Log In to a Windows ECS Using an English Keyboard</h4><ol id="EN-US_TOPIC_0027268511__ol28694912111459"><li id="EN-US_TOPIC_0027268511__li56927618111459">Log in to the management console.</li><li id="EN-US_TOPIC_0027268511__li464234814566">Click <span><img id="EN-US_TOPIC_0027268511__image01959281391" src="en-us_image_0000002357961913.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0027268511__li38109735111614">Under <strong id="EN-US_TOPIC_0027268511__b24031047135919">Computing</strong>, click <strong id="EN-US_TOPIC_0027268511__b54038471593">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0027268511__li35957062115329">Obtain the password for logging in to the ECS.<p id="EN-US_TOPIC_0027268511__p43347089115332"><a name="EN-US_TOPIC_0027268511__li35957062115329"></a><a name="li35957062115329"></a>Before logging in to the ECS, you must have the login password.</p>
<div class="section" id="EN-US_TOPIC_0027268511__section46750509111459"><a name="EN-US_TOPIC_0027268511__section46750509111459"></a><a name="section46750509111459"></a><h4 class="sectiontitle">Log In to a Windows ECS Using an English Keyboard</h4><ol id="EN-US_TOPIC_0027268511__ol28694912111459"><li id="EN-US_TOPIC_0027268511__en-us_topic_0013859510_en-us_topic_0027498860_li1469786919405">Log in to the management console.</li><li id="EN-US_TOPIC_0027268511__li464234814566">Click <span><img id="EN-US_TOPIC_0027268511__en-us_topic_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0027268511__li38109735111614">Under <strong id="EN-US_TOPIC_0027268511__b24031047135919">Computing</strong>, click <strong id="EN-US_TOPIC_0027268511__b54038471593">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0027268511__li35957062115329">Obtain the password for logging in to the ECS.<p id="EN-US_TOPIC_0027268511__p43347089115332"><a name="EN-US_TOPIC_0027268511__li35957062115329"></a><a name="li35957062115329"></a>Before logging in to the ECS, you must have the login password.</p>
<p id="EN-US_TOPIC_0027268511__p83185525271">For instructions about how to obtain the password for logging in to a Windows ECS, see <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</p>
</li><li id="EN-US_TOPIC_0027268511__li26955662111459">In the search box above the upper right corner of the ECS list, enter the ECS name and click <span><img id="EN-US_TOPIC_0027268511__image210928384103440" src="en-us_image_0030874266.png"></span> for search.</li><li id="EN-US_TOPIC_0027268511__li16881493111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0027268511__b27882506151141">Remote Login</strong> in the <strong id="EN-US_TOPIC_0027268511__b49615964151141">Operation</strong> column.</li><li id="EN-US_TOPIC_0027268511__li17715715111459"><a name="EN-US_TOPIC_0027268511__li17715715111459"></a><a name="li17715715111459"></a>In the displayed <strong id="EN-US_TOPIC_0027268511__b1064769323195924">Configure Keyboard Layout for Remote Login</strong> dialog box, select the English keyboard.<div class="fignone" id="EN-US_TOPIC_0027268511__fig25223713111459"><span class="figcap"><b>Figure 1 </b>Keyboard layout configuration</span><br><span><img id="EN-US_TOPIC_0027268511__image158461630132511" src="en-us_image_0000002176822257.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0027268511__li258703111459">Click <strong id="EN-US_TOPIC_0027268511__b842352706112241">Remote Login</strong>.</li><li id="EN-US_TOPIC_0027268511__li2328327111459">(Optional) If you have changed the system language, in the displayed dialog box, click <strong id="EN-US_TOPIC_0027268511__b015193019483">Remote Login</strong>.<div class="fignone" id="EN-US_TOPIC_0027268511__fig54376817111459"><span class="figcap"><b>Figure 2 </b>Remote Login</span><br><span><img id="EN-US_TOPIC_0027268511__image1668613445268" src="en-us_image_0000002141305390.png" title="Click to enlarge" class="imgResize"></span></div>
@ -716,11 +716,11 @@
</li><li id="EN-US_TOPIC_0027268511__li8128490194410">(Optional) If you need your cursor to be displayed on the remote login page, click <strong id="EN-US_TOPIC_0027268511__b16217152025520">Local Cursor</strong>.<div class="fignone" id="EN-US_TOPIC_0027268511__fig3022163194924"><span class="figcap"><b>Figure 4 </b>Local Cursor</span><br><span><img id="EN-US_TOPIC_0027268511__en-us_topic_0036067988_image5640621116424" src="en-us_image_0036068239.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0027268511__li46470107111459">Enter the ECS password as prompted.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0027268511__section5982347111459"><a name="EN-US_TOPIC_0027268511__section5982347111459"></a><a name="section5982347111459"></a><h4 class="sectiontitle">Log In to a Windows ECS Using a Non-English Keyboard</h4><ol id="EN-US_TOPIC_0027268511__ol14808116111459"><li id="EN-US_TOPIC_0027268511__li66164181111459">Log in to the management console.</li><li id="EN-US_TOPIC_0027268511__li046177101213">Click <span><img id="EN-US_TOPIC_0027268511__en-us_topic_0014250631_en-us_topic_0014250631_image1733511156361" src="en-us_image_0000002323963338.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0027268511__li17452565111640">Under <strong id="EN-US_TOPIC_0027268511__b10427447115915">Computing</strong>, click <strong id="EN-US_TOPIC_0027268511__b12427247205916">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0027268511__li52373941115359">Obtain the password for logging in to the ECS.<p id="EN-US_TOPIC_0027268511__p5038532111540"><a name="EN-US_TOPIC_0027268511__li52373941115359"></a><a name="li52373941115359"></a>Before logging in to the ECS, you must have the login password.</p>
<div class="section" id="EN-US_TOPIC_0027268511__section5982347111459"><a name="EN-US_TOPIC_0027268511__section5982347111459"></a><a name="section5982347111459"></a><h4 class="sectiontitle">Log In to a Windows ECS Using a Non-English Keyboard</h4><ol id="EN-US_TOPIC_0027268511__ol14808116111459"><li id="EN-US_TOPIC_0027268511__li574019111498">Log in to the management console.</li><li id="EN-US_TOPIC_0027268511__li046177101213">Click <span><img id="EN-US_TOPIC_0027268511__en-us_topic_0000001825604541_image9499446838_1" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0027268511__li17452565111640">Under <strong id="EN-US_TOPIC_0027268511__b10427447115915">Computing</strong>, click <strong id="EN-US_TOPIC_0027268511__b12427247205916">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0027268511__li52373941115359">Obtain the password for logging in to the ECS.<p id="EN-US_TOPIC_0027268511__p5038532111540"><a name="EN-US_TOPIC_0027268511__li52373941115359"></a><a name="li52373941115359"></a>Before logging in to the ECS, you must have the login password.</p>
<p id="EN-US_TOPIC_0027268511__p89681118152820">For instructions about how to obtain the password for logging in to a Windows ECS, see <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</p>
</li><li id="EN-US_TOPIC_0027268511__li49523598111459">In the search box above the ECS list, enter the ECS name, IP address, or ID, and click <span><img id="EN-US_TOPIC_0027268511__image1130062801103443" src="en-us_image_0030874275.png"></span> for search.</li><li id="EN-US_TOPIC_0027268511__li50214528111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0027268511__b417081993">Remote Login</strong> in the <strong id="EN-US_TOPIC_0027268511__b1931920422">Operation</strong> column.</li><li id="EN-US_TOPIC_0027268511__li49277573111459">In the displayed <strong id="EN-US_TOPIC_0027268511__b56972969520052">Configure Keyboard Layout for Remote Login</strong> dialog box, select the keyboard that suits your language.<ul id="EN-US_TOPIC_0027268511__ul40844978111459"><li id="EN-US_TOPIC_0027268511__li32060489111459">When logging in to the ECS using VNC for the first time, select the default English keyboard. The ECS OS uses the English keyboard by default.</li><li id="EN-US_TOPIC_0027268511__li20108945111459">If you have changed the keyboard language of the ECS OS, select the keyboard language to which you have changed.</li></ul>
</li><li id="EN-US_TOPIC_0027268511__li49523598111459">In the search box above the ECS list, enter the ECS name, IP address, or ID, and click <span><img id="EN-US_TOPIC_0027268511__image1130062801103443" src="en-us_image_0030874275.png"></span> for search.</li><li id="EN-US_TOPIC_0027268511__li50214528111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0027268511__b437515612">Remote Login</strong> in the <strong id="EN-US_TOPIC_0027268511__b272377312">Operation</strong> column.</li><li id="EN-US_TOPIC_0027268511__li49277573111459">In the displayed <strong id="EN-US_TOPIC_0027268511__b56972969520052">Configure Keyboard Layout for Remote Login</strong> dialog box, select the keyboard that suits your language.<ul id="EN-US_TOPIC_0027268511__ul40844978111459"><li id="EN-US_TOPIC_0027268511__li32060489111459">When logging in to the ECS using VNC for the first time, select the default English keyboard. The ECS OS uses the English keyboard by default.</li><li id="EN-US_TOPIC_0027268511__li20108945111459">If you have changed the keyboard language of the ECS OS, select the keyboard language to which you have changed.</li></ul>
<div class="fignone" id="EN-US_TOPIC_0027268511__fig46762780111459"><span class="figcap"><b>Figure 5 </b>Keyboard layout configuration</span><br><span><img id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_image158461630132511" src="en-us_image_0000002176822257.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol><ol start="8" id="EN-US_TOPIC_0027268511__ol65873268111459"><li id="EN-US_TOPIC_0027268511__li55988502111459">Click <strong id="EN-US_TOPIC_0027268511__b1731919659">Remote Login</strong>.</li><li id="EN-US_TOPIC_0027268511__li34134472111459">(Optional) If you have changed the system language, in the displayed dialog box, click <strong id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_b015193019483">Remote Login</strong>.<div class="fignone" id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_fig54376817111459"><span class="figcap"><b>Figure 6 </b>Remote Login</span><br><span><img id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_image1668613445268" src="en-us_image_0000002141305390.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol><ol start="8" id="EN-US_TOPIC_0027268511__ol65873268111459"><li id="EN-US_TOPIC_0027268511__li55988502111459">Click <strong id="EN-US_TOPIC_0027268511__b1630334006">Remote Login</strong>.</li><li id="EN-US_TOPIC_0027268511__li34134472111459">(Optional) If you have changed the system language, in the displayed dialog box, click <strong id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_b015193019483">Remote Login</strong>.<div class="fignone" id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_fig54376817111459"><span class="figcap"><b>Figure 6 </b>Remote Login</span><br><span><img id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_image1668613445268" src="en-us_image_0000002141305390.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0027268511__li56190747193213">(Optional) When the system displays "Press CTRL+ALT+DELETE to log on", click <strong id="EN-US_TOPIC_0027268511__en-us_topic_0027290684_b842352706201616_1">Send CtrlAltDel</strong> in the upper part of the remote login page to log in to the ECS.<div class="fignone" id="EN-US_TOPIC_0027268511__en-us_topic_0027290684_fig22996848191913_1"><span class="figcap"><b>Figure 7 </b>Send CtrlAltDel</span><br><span><img id="EN-US_TOPIC_0027268511__en-us_topic_0027290684_image50805371191913_1" src="en-us_image_0042322120.png"></span></div>
</li><li id="EN-US_TOPIC_0027268511__li64981560195132">(Optional) If you need your cursor to be displayed on the remote login page, click <strong id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_b16217152025520">Local Cursor</strong>.<div class="fignone" id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_fig3022163194924"><span class="figcap"><b>Figure 8 </b>Local Cursor</span><br><span><img id="EN-US_TOPIC_0027268511__en-us_topic_0027268511_en-us_topic_0036067988_image5640621116424" src="en-us_image_0036068239.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0027268511__li58839855111459">Enter the ECS password as prompted.<ul id="EN-US_TOPIC_0027268511__ul59796655111459"><li id="EN-US_TOPIC_0027268511__li1298990111459">When logging in to the ECS using VNC for the first time, use the English keyboard to enter the password. After you have logged in to the ECS, see <a href="#EN-US_TOPIC_0027268511__section66962382111459">Changing the OS Keyboard Language</a> to change the keyboard language of the ECS OS. You can then select the keyboard language and enter the password the next time you log in.</li><li id="EN-US_TOPIC_0027268511__li38109398111459">If you have changed the keyboard language of the ECS OS, ensure that the keyboard language in use, the keyboard language selected in step <a href="#EN-US_TOPIC_0027268511__li17715715111459">7</a>, and the changed OS keyboard language are all the same.</li></ul>

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</th>
<th align="left" class="cellrowborder" valign="top" width="11.97%" id="mcps1.3.3.7.2.6.1.2"><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p129301851131913">Protocol</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.3.7.2.6.1.3"><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p093075141919">Port/Range</p>
<th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.3.7.2.6.1.3"><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p093075141919">Port</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="25.22%" id="mcps1.3.3.7.2.6.1.4"><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p149306511191">Source/Destination</p>
</th>
@ -44,7 +44,7 @@
</td>
<td class="cellrowborder" valign="top" width="25.22%" headers="mcps1.3.3.7.2.6.1.4 "><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p593115141917">Source: the current security group (for example, sg-<em id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_i2138146127154428">xxxxx</em>)</p>
</td>
<td class="cellrowborder" valign="top" width="35.980000000000004%" headers="mcps1.3.3.7.2.6.1.5 "><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p2931151121912">Allows communications among ECSs within the security group and denies all inbound traffic (incoming data packets).</p>
<td class="cellrowborder" valign="top" width="35.980000000000004%" headers="mcps1.3.3.7.2.6.1.5 "><p id="EN-US_TOPIC_0030828257__en-us_topic_0118534003_p2931151121912">Allows communications among cloud servers within the security group and denies all inbound traffic.</p>
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</li><li id="EN-US_TOPIC_0030878383__li795013166306">Configure required parameters.<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p10544530320"><a name="EN-US_TOPIC_0030878383__li795013166306"></a><a name="li795013166306"></a>You can click <strong id="EN-US_TOPIC_0030878383__b21273818145">+</strong> to add more inbound rules.</p>
<div class="fignone" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_fig1786518124129"><span class="figcap"><b>Figure 1 </b>Adding inbound rules</span><br><span><img id="EN-US_TOPIC_0030878383__image42921342115516" src="en-us_image_0000002385340709.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_0000001865662329_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_0000001865662329_row939234412443"><th align="left" class="cellrowborder" valign="top" width="12.67%" id="mcps1.3.2.2.8.3.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p18392194484413"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b837419420">Parameter</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_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_0000001865662329_row939234412443"><th align="left" class="cellrowborder" valign="top" width="12.67%" id="mcps1.3.2.2.8.3.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p18392194484413"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b263369535">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="69.33%" id="mcps1.3.2.2.8.3.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1639234444413"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b491298880">Description</strong></p>
<th align="left" class="cellrowborder" valign="top" width="69.33%" id="mcps1.3.2.2.8.3.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1639234444413"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1147234038">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="18%" id="mcps1.3.2.2.8.3.2.4.1.3"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1739294416447"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b2129758530">Example Value</strong></p>
<th align="left" class="cellrowborder" valign="top" width="18%" id="mcps1.3.2.2.8.3.2.4.1.3"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1739294416447"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1631696207">Example Value</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row14392174419445"><td class="cellrowborder" valign="top" width="12.67%" headers="mcps1.3.2.2.8.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p539213442445">Priority</p>
</td>
<td class="cellrowborder" valign="top" width="69.33%" headers="mcps1.3.2.2.8.3.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p20392144415441">The security group rule priority.</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p15392174410444">The priority ranges from 1 to 100. The default value is 1 and has the highest priority. The security group rule with a smaller value has a higher priority.</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p15392174410444">The priority value ranges from 1 to 100. The default value is 1, which has the highest priority. The security group rule with a smaller value has a higher priority.</p>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.8.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p173921044104415">1</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row10392124412442"><td class="cellrowborder" valign="top" width="12.67%" headers="mcps1.3.2.2.8.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p103923441441">Action</p>
</td>
<td class="cellrowborder" valign="top" width="69.33%" headers="mcps1.3.2.2.8.3.2.4.1.2 "><div class="p" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p123921244154413">The value can be <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1522795213421">Allow</strong> or <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b922865264219">Deny</strong>.<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul173921244154419"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li133928447440">If the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b490255668">Action</strong> is set to <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1103610514">Allow</strong>, traffic is allowed to access the cloud servers in the security group over specified ports.</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li1439264484414">If the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1142394704416">Action</strong> is set to <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b13423164734419">Deny</strong>, traffic is denied to access the cloud servers in the security group over specified ports.</li></ul>
<td class="cellrowborder" valign="top" width="69.33%" headers="mcps1.3.2.2.8.3.2.4.1.2 "><div class="p" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p123921244154413">The value can be <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1522795213421">Allow</strong> or <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b922865264219">Deny</strong>.<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul173921244154419"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li133928447440">If the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1610222659">Action</strong> is set to <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1130229524">Allow</strong>, traffic is allowed to access the cloud servers in the security group over specified ports.</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li1439264484414">If the <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1142394704416">Action</strong> is set to <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b13423164734419">Deny</strong>, traffic is denied to access the cloud servers in the security group over specified ports.</li></ul>
</div>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.8.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1239244454416">Allow</p>
@ -55,14 +55,20 @@
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p63930445443">Port: 22, 22-30</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row339334484413"><td class="cellrowborder" valign="top" width="12.67%" headers="mcps1.3.2.2.8.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p143935446443">Source</p>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row15393194404419"><td class="cellrowborder" valign="top" width="12.67%" headers="mcps1.3.2.2.8.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p13393194474411">Source</p>
</td>
<td class="cellrowborder" valign="top" width="69.33%" headers="mcps1.3.2.2.8.3.2.4.1.2 "><div class="p" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p12393444184414">Source of the security group rule. The value can be an IP address or a security group, to allow access from IP addresses or instances in the security group. <ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul11393124415442"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li1939344419441">IP address<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul6393154464420"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li153932444443">Single IP address: 192.168.10.10/32</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li10393244194415">All IP addresses: 0.0.0.0/0</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li53931544184419">IP address range: 192.168.1.0/24</li></ul>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li43931944124417"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b035956164115">Security group</strong>: The source is another security group. You can select a security group in the same region under the current account from the drop-down list. Suppose instance A is in security group A and instance B is in security group B. If security group A has an inbound rule with <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b5676112718218">Action</strong> set to <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b18676827122120">Allow</strong> and <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b56761127192119">Source</strong> set to security group B, access from instance B is allowed to instance A.</li></ul>
<td class="cellrowborder" valign="top" width="69.33%" headers="mcps1.3.2.2.8.3.2.4.1.2 "><div class="p" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1639364464420">Used to match the IP address or address range of an external request. The source can be:<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul203934448442"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li139304415443"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b184681775221">IP address</strong>: <ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul203931144154410"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li439374416446">A single IP address: IP address/mask<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p11393944194417"><a name="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li439374416446"></a><a name="en-us_topic_0000001865662329_li439374416446"></a>Example IPv4 address: 192.168.10.10/32</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p33931844104412">Example IPv6 address: 2002:50::44/128</p>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li539311445444">IP address range in CIDR notation: IP address/mask<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p739319446449"><a name="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li539311445444"></a><a name="en-us_topic_0000001865662329_li539311445444"></a>Example IPv4 address range: 192.168.52.0/24</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1139320444447">Example IPv6 address range: 2407:c080:802:469::/64</p>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li4393184411443">All IP addresses<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p4393114414444"><a name="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li4393184411443"></a><a name="en-us_topic_0000001865662329_li4393184411443"></a>0.0.0.0/0 represents all IPv4 addresses.</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p43931244154411">::/0 represents all IPv6 addresses.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li439304412448"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b10231339172319">Security group</strong>: The source is from another security group. You can select a security group in the same region from the drop-down list. If there is instance A in security group A and instance B in security group B, and the inbound rule of security group A allows traffic from security group B, traffic is allowed from instance B to instance A.</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li0393194415446"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b386297917">IP address group</strong>: An IP address group is a collection of one or more IP addresses. You can select an available IP address group from the drop-down list. An IP address group can help you manage IP address ranges and IP addresses with same security requirements in a simpler way.</li></ul>
</div>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1839364416448">If the source is a security group, this rule will apply to all instances associated with the selected security group.</p>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.8.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p4393184444418">192.168.0.0/24</p>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.8.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p133931944134411">IP address</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p673734454417">192.168.52.0/24,10.0.0.0/24</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row63931044124411"><td class="cellrowborder" valign="top" width="12.67%" headers="mcps1.3.2.2.8.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p83931944154418">Description</p>
@ -81,9 +87,9 @@
</li><li id="EN-US_TOPIC_0030878383__li9367915133218">Configure required parameters.<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p161151454111115"><a name="EN-US_TOPIC_0030878383__li9367915133218"></a><a name="li9367915133218"></a>You can click <strong id="EN-US_TOPIC_0030878383__b4882431224550">+</strong> to add more outbound rules.</p>
<div class="fignone" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_fig11809848184019"><span class="figcap"><b>Figure 2 </b>Adding outbound rules</span><br><span><img id="EN-US_TOPIC_0030878383__image1150815492586" src="en-us_image_0000002385382577.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_0000001865662329_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_0000001865662329_row19614623202312"><th align="left" class="cellrowborder" valign="top" width="12.55%" id="mcps1.3.2.2.11.3.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p361592319230"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1473168664">Parameter</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_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_0000001865662329_row19614623202312"><th align="left" class="cellrowborder" valign="top" width="12.55%" id="mcps1.3.2.2.11.3.2.4.1.1"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p361592319230"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1899306871">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="69.45%" id="mcps1.3.2.2.11.3.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1961514231232"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b98540265">Description</strong></p>
<th align="left" class="cellrowborder" valign="top" width="69.45%" id="mcps1.3.2.2.11.3.2.4.1.2"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1961514231232"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1089579997">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="18%" id="mcps1.3.2.2.11.3.2.4.1.3"><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1061552372311"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b78071625745">Example Value</strong></p>
</th>
@ -92,7 +98,7 @@
<tbody><tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row176159232238"><td class="cellrowborder" valign="top" width="12.55%" headers="mcps1.3.2.2.11.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p461592313236">Priority</p>
</td>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.11.3.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p050041314189">The security group rule priority.</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p206155235231">The priority value ranges from 1 to 100. The default value is 1 and has the highest priority. The security group rule with a smaller value has a higher priority.</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p206155235231">The priority value ranges from 1 to 100. The default value is 1, which has the highest priority. The security group rule with a smaller value has a higher priority.</p>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.11.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1361515237237">1</p>
</td>
@ -124,13 +130,19 @@
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.11.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p1647423715486">IPv4</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row2617112315232"><td class="cellrowborder" valign="top" width="12.55%" headers="mcps1.3.2.2.11.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p15617623172315">Destination</p>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row15702123318456"><td class="cellrowborder" valign="top" width="12.55%" headers="mcps1.3.2.2.11.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p2898143184510">Destination</p>
</td>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.11.3.2.4.1.2 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p196171823152315">Destination of the security group rule. The value can be an IP address or a security group to allow access to IP addresses or instances in the security group. </p>
<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul14775515137"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li0541721414">IP address:<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_ul554172946"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li19301951584">Single IP address: 192.168.10.10/32</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li530357816">All IP addresses: 0.0.0.0/0</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li330351881">IP address range: 192.168.1.0/24</li></ul>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li1379512674318"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b3136471193">Security group</strong>: The source is from another security group. You can select a security group in the same region from the drop-down list. If there is instance A in security group A and instance B in security group B, and the inbound rule of security group A allows traffic from security group B, traffic is allowed from instance B to instance A.</li></ul>
<td class="cellrowborder" valign="top" width="69.45%" headers="mcps1.3.2.2.11.3.2.4.1.2 "><div class="p" id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p12898164384513">The destination in an outbound rule is used to match the IP address or address range of an internal request. The destination can be:<ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul16898144344515"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li189874334519"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b2043621020199">IP address</strong>: <ul id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_ul178981243184520"><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li17585199418">Single IP address: IP address/mask<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_p152281816144113"><a name="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li17585199418"></a><a name="en-us_topic_0000001865662329_en-us_topic_0118534005_li17585199418"></a>Example IPv4 address: 192.168.10.10/32</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_p1415851120418">Example IPv6 address: 2002:50::44/128</p>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li18539142084119">IP address range in CIDR notation: IP address/mask<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_p18460438204116"><a name="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li18539142084119"></a><a name="en-us_topic_0000001865662329_en-us_topic_0118534005_li18539142084119"></a>Example IPv4 address range: 192.168.52.0/24</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_p1677313615411">Example IPv6 address range: 2407:c080:802:469::/64</p>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li06725421419">All IP addresses<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_p16868743104112"><a name="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_li06725421419"></a><a name="en-us_topic_0000001865662329_en-us_topic_0118534005_li06725421419"></a>0.0.0.0/0 represents all IPv4 addresses.</p>
<p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_en-us_topic_0118534005_p102143157544">::/0 represents all IPv6 addresses.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li8898164344512"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b122376283198">Security group</strong>: The destination is from another security group. You can select a security group in the same region under the current account from the drop-down list. Instance A is in security group A and instance B is in security group B. If security group A has an outbound rule with <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b185236406198">Action</strong> set to <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1252318404194">Allow</strong> and <strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1524540181916">Destination</strong> set to security group B, access from instance A is allowed to instance B.</li><li id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_li18898543134513"><strong id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_b1562712382010">IP address group</strong>: An IP address group is a collection of one or more IP addresses. You can select an available IP address group from the drop-down list. An IP address group can help you manage IP address ranges and IP addresses with same security requirements in a simpler way.</li></ul>
</div>
</td>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.11.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p4617102352310">0.0.0.0/0</p>
<td class="cellrowborder" valign="top" width="18%" headers="mcps1.3.2.2.11.3.2.4.1.3 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p5898443194515">IP address: 0.0.0.0/0</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_row196181723162317"><td class="cellrowborder" valign="top" width="12.55%" headers="mcps1.3.2.2.11.3.2.4.1.1 "><p id="EN-US_TOPIC_0030878383__en-us_topic_0000001865662329_p2061811237237">Description</p>

19
docs/ecs/umn/en-us_topic_0031523135.html
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@ -5,23 +5,21 @@
<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 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__li68038492239">The OS change takes about 1 to 4 minutes During this process, the <span id="EN-US_TOPIC_0031523135__text1821124103312">ECS</span> status is <strong id="EN-US_TOPIC_0031523135__b128242473318">Changing OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li8803184922312">Do not perform any operations on the ECS before the system injects the password or key, or the login will fail.</li><li id="EN-US_TOPIC_0031523135__li31738699195952">The ECS for which you want to change the OS must be in any of the following states: <strong id="EN-US_TOPIC_0031523135__b13748192124615">Stopped</strong>, <strong id="EN-US_TOPIC_0031523135__b165388615466">Reinstallation failed</strong>, or <strong id="EN-US_TOPIC_0031523135__b9101511124619">Failed to change the OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li4397542520019">The target <span id="EN-US_TOPIC_0031523135__text49488517246">ECS</span> must have a system disk attached.</li><li id="EN-US_TOPIC_0031523135__li61491838141054">The EVS disk quota must be greater than 0.</li><li id="EN-US_TOPIC_0031523135__li799454911582">The system disk type cannot be changed.</li><li id="EN-US_TOPIC_0031523135__li3375642181010">The system disk can be encrypted.</li><li id="EN-US_TOPIC_0031523135__li15800141283111">For details about the change between different OSs, see <a href="#EN-US_TOPIC_0031523135__section1852122261012">Notes on Change Between Windows and Linux</a>.</li><li id="EN-US_TOPIC_0031523135__li5399152414277">If an ECS OS is changed using a full-ECS image, the ECS system disk can be encrypted.</li></ul>
<div class="section" id="EN-US_TOPIC_0031523135__section21723173114530"><h4 class="sectiontitle">Constraints</h4><ul id="EN-US_TOPIC_0031523135__ul66848156141149"><li id="EN-US_TOPIC_0031523135__li68038492239">An OS change takes about 1 to 4 minutes to complete. During this process, the <span id="EN-US_TOPIC_0031523135__text1821124103312">ECS</span> status is <strong id="EN-US_TOPIC_0031523135__b128242473318">Changing OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li8803184922312">Do not perform any operations on the ECS before the system injects the password or key, or the login will fail.</li><li id="EN-US_TOPIC_0031523135__li31738699195952">The ECS for which you want to change the OS must be in any of the following states: <strong id="EN-US_TOPIC_0031523135__b13748192124615">Stopped</strong>, <strong id="EN-US_TOPIC_0031523135__b165388615466">Reinstallation failed</strong>, or <strong id="EN-US_TOPIC_0031523135__b9101511124619">Failed to change the OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li4397542520019">The target <span id="EN-US_TOPIC_0031523135__text49488517246">ECS</span> must have a system disk attached.</li><li id="EN-US_TOPIC_0031523135__li61491838141054">The EVS disk quota must be greater than 0.</li><li id="EN-US_TOPIC_0031523135__li799454911582">The system disk type cannot be changed.</li><li id="EN-US_TOPIC_0031523135__li3375642181010">The system disk can be encrypted.</li><li id="EN-US_TOPIC_0031523135__li5399152414277">If an ECS OS is changed using a full-ECS image, the ECS system disk can be encrypted.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0031523135__section34193483165818"><h4 class="sectiontitle">Notes</h4><ul id="EN-US_TOPIC_0031523135__ul57938298174117"><li id="EN-US_TOPIC_0031523135__li4523794174117">After the OS is changed, the original OS is not retained, and the original system disk is deleted, including the data in all partitions of the system disk.</li><li id="EN-US_TOPIC_0031523135__li11628132425511">Changing the OS clears the data in all partitions of the system disk, including the system partition. Back up data before changing the OS. </li><li id="EN-US_TOPIC_0031523135__li15142465169">Changing the OS does not affect data in data disks.</li><li id="EN-US_TOPIC_0031523135__li4111648121710">After the OS is changed, your service runtime environment must be deployed on the new OS again.</li><li id="EN-US_TOPIC_0031523135__li20928142617465">After the OS is changed, the <span id="EN-US_TOPIC_0031523135__text1482784142414">ECS</span> will be automatically started.</li><li id="EN-US_TOPIC_0031523135__li12911023610">After the OS is changed, the system disk type of the ECS cannot be changed.</li><li id="EN-US_TOPIC_0031523135__li3784113720411">After the OS is changed, the IP and MAC addresses of the <span id="EN-US_TOPIC_0031523135__text116191542192414">ECS</span> remain unchanged.</li><li id="EN-US_TOPIC_0031523135__li1996774354616">After the OS is changed, custom settings (such as DNS and hostname) of the original OS will be reset. They need to be configured again.</li><li id="EN-US_TOPIC_0031523135__li153642091262">An OS change takes about 1 to 4 minutes to complete. During this process, the <span id="EN-US_TOPIC_0031523135__text84597433244">ECS</span> status is <strong id="EN-US_TOPIC_0031523135__b1965965515210">Changing OS</strong>.</li><li id="EN-US_TOPIC_0031523135__li439952411274">After the OS is changed, the password for logging in to the ECS is reset. To retrieve the password, perform the following operations:<ul id="EN-US_TOPIC_0031523135__ul1739982472717"><li id="EN-US_TOPIC_0031523135__li1939952412713">For a Linux ECS, log in to it using the key and set a new password. For instructions about how to log in to an ECS using a key pair, see <a href="en-us_topic_0017955380.html">Logging In to a Linux ECS Using an SSH Key Pair</a>.</li><li id="EN-US_TOPIC_0031523135__li73991224142715">For a Windows ECS, retrieve the password by following the instructions provided in <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</li></ul>
</li></ul>
<ul id="EN-US_TOPIC_0031523135__ul18707673284"><li id="EN-US_TOPIC_0031523135__li10954135083316">The system disk capacity of an <span id="EN-US_TOPIC_0031523135__text109953488248">ECS</span> with OS changed may change because the system disk capacity specified by the image of the changed OS may be changed.</li><li id="EN-US_TOPIC_0031523135__li14700191710294">You can choose to encrypt the system disk of an ECS during OS change.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0031523135__section1852122261012"><a name="EN-US_TOPIC_0031523135__section1852122261012"></a><a name="section1852122261012"></a><h4 class="sectiontitle">Notes on Change Between Windows and Linux</h4><p id="EN-US_TOPIC_0031523135__p18122171781114">When you change the OS from Windows to Linux or from Linux to Windows, note the following:</p>
<ul id="EN-US_TOPIC_0031523135__ul465265720559"><li id="EN-US_TOPIC_0031523135__li116521157105519">To change Windows to Linux, install an NTFS partition tool, such as NTFS-3G for data reads and writes on the Windows ECS.</li><li id="EN-US_TOPIC_0031523135__li1865219579552">To change Linux to Windows, install software, such as Ext2Read or Ext2Fsd to identify ext3 or ext4.<div class="note" id="EN-US_TOPIC_0031523135__note1024618431261"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0031523135__p324654313618">If there are LVM partitions on the Linux ECS, these partitions may fail after the OS is changed to Windows. Therefore, a change from Linux to Windows is not recommended.</p>
<ul id="EN-US_TOPIC_0031523135__ul18707673284"><li id="EN-US_TOPIC_0031523135__li10954135083316">The system disk capacity of an <span id="EN-US_TOPIC_0031523135__text109953488248">ECS</span> with OS changed may change because the system disk capacity specified by the image of the changed OS may be changed.</li><li id="EN-US_TOPIC_0031523135__li14700191710294">You can choose to encrypt the system disk of an ECS during OS change.</li><li id="EN-US_TOPIC_0031523135__li1759919199376">When you change the OS from Windows to Linux or vice versa, note the following:<ul id="EN-US_TOPIC_0031523135__ul871922403713"><li id="EN-US_TOPIC_0031523135__li8719182413719">To change Windows to Linux, install a tool or driver (such as NTFS-3G) that enables read and write access to Windows NTFS partitions.</li><li id="EN-US_TOPIC_0031523135__li1771902473716">To change Linux to Windows, install software, such as Ext2Read or Ext2Fsd, to identify ext3 or ext4.<div class="note" id="EN-US_TOPIC_0031523135__note107201244371"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0031523135__p072015242373">If there are LVM partitions on the Linux ECS, these partitions may fail to be identified after the OS is changed to Windows. Therefore, a change from Linux to Windows is not recommended.</p>
</div></div>
</li></ul>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0031523135__section10065433195938"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0031523135__ul5982276195952"><li id="EN-US_TOPIC_0031523135__li62686098144932">The data is backed up.<p id="EN-US_TOPIC_0031523135__p11423322191812"><a name="EN-US_TOPIC_0031523135__li62686098144932"></a><a name="li62686098144932"></a></p>
</li><li id="EN-US_TOPIC_0031523135__li191271414510">If you want to change the login authentication mode from password to key pair during the OS change, create a key file in advance.<p id="EN-US_TOPIC_0031523135__p174821835131919"><a name="EN-US_TOPIC_0031523135__li191271414510"></a><a name="li191271414510"></a>For details, see <a href="en-us_topic_0000001278350057.html">(Recommended) Creating a Key Pair on the Management Console</a>.</p>
<div class="section" id="EN-US_TOPIC_0031523135__section10065433195938"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0031523135__ul5982276195952"><li id="EN-US_TOPIC_0031523135__li62686098144932">The <span id="EN-US_TOPIC_0031523135__text3872161318187">ECS</span> data has been backed up.<p id="EN-US_TOPIC_0031523135__p11423322191812"></p>
</li><li id="EN-US_TOPIC_0031523135__li191271414510">If you want to change the login authentication mode from password to key pair during the OS change, ensure that you have created a key file.<p id="EN-US_TOPIC_0031523135__p174821835131919"><a name="EN-US_TOPIC_0031523135__li191271414510"></a><a name="li191271414510"></a>For details, see <a href="en-us_topic_0000001278350057.html">(Recommended) Creating a Key Pair on the Management Console</a>.</p>
</li><li id="EN-US_TOPIC_0031523135__li19425937143519">If you plan to use a private image to change the OS, ensure that a private image is available. For details about how to create a private image, see <em id="EN-US_TOPIC_0031523135__i1166493117393">Image Management Service User Guide</em>.<ul id="EN-US_TOPIC_0031523135__ul16160101111503"><li id="EN-US_TOPIC_0031523135__li112128495415">If the image of a specified <span id="EN-US_TOPIC_0031523135__text98820428488">ECS</span> is required, make sure that a private image has been created using this <span id="EN-US_TOPIC_0031523135__text9883742124815">ECS</span>.</li><li id="EN-US_TOPIC_0031523135__li19120046204513">If a local image file is required, make sure that the image file has been imported to the cloud platform and registered as a private image.</li><li id="EN-US_TOPIC_0031523135__li1838258174613">If a private image from another region is required, make sure that the image has been copied.</li><li id="EN-US_TOPIC_0031523135__li19484544194814">If a private image from another user account is required, make sure that the image has been shared with you.</li></ul>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0031523135__section208284422018"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0031523135__ol6031768220119"><li id="EN-US_TOPIC_0031523135__li14469519145710">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_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a 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__b11236186164017"><span id="EN-US_TOPIC_0031523135__text6236864409">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031523135__b1323716634018">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031523135__li162972813478">Locate the row containing the target <span id="EN-US_TOPIC_0031523135__text85429311777">ECS</span> and choose <strong id="EN-US_TOPIC_0031523135__b654243115717">More</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b554317314716">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b20543133111716">Change OS</strong> in the <strong id="EN-US_TOPIC_0031523135__b354317311376">Operation</strong> column.<p id="EN-US_TOPIC_0031523135__p230152844712">Only stopped <span id="EN-US_TOPIC_0031523135__text1811919337108">ECS</span>s support OS change. If the <span id="EN-US_TOPIC_0031523135__text1951557584">ECS</span> is not stopped, stop it before proceeding with changing.</p>
<div class="section" id="EN-US_TOPIC_0031523135__section208284422018"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0031523135__ol6031768220119"><li id="EN-US_TOPIC_0031523135__li14469519145710">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_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a 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__b11236186164017"><span id="EN-US_TOPIC_0031523135__text6236864409">Computing</span></strong>, click <strong id="EN-US_TOPIC_0031523135__b1323716634018">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0031523135__li162972813478">Locate the row containing the target <span id="EN-US_TOPIC_0031523135__text85429311777">ECS</span> and choose <strong id="EN-US_TOPIC_0031523135__b654243115717">More</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b554317314716">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0031523135__b20543133111716">Change OS</strong> in the <strong id="EN-US_TOPIC_0031523135__b354317311376">Operation</strong> column.<p id="EN-US_TOPIC_0031523135__p230152844712">Only stopped <span id="EN-US_TOPIC_0031523135__text1811919337108">ECS</span>s support OS change. If the <span id="EN-US_TOPIC_0031523135__text7164698613">ECS</span> is not stopped, stop it before proceeding with the change.</p>
</li><li id="EN-US_TOPIC_0031523135__li359341520111">Select the target image.<p id="EN-US_TOPIC_0031523135__p4891784120112"><a name="EN-US_TOPIC_0031523135__li359341520111"></a><a name="li359341520111"></a>For details, see <a href="en-us_topic_0021831611.html">Creating an ECS</a>.</p>
<div class="fignone" id="EN-US_TOPIC_0031523135__fig61751138286"><span class="figcap"><b>Figure 1 </b>Changing an OS</span><br><span><img id="EN-US_TOPIC_0031523135__image10463142014217" src="en-us_image_0000002385192025.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0031523135__li8531832155310">(Optional) Select the <strong id="EN-US_TOPIC_0031523135__b1408122218304">Encrypted</strong> option to encrypt the system disk during OS change.<p id="EN-US_TOPIC_0031523135__p767712438280">To enable encryption, click <span class="uicontrol" id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_uicontrol528614138616"><b>Create Xrole</b></span> to grant KMS access permissions to EVS. If you have the granting permission, grant KMS access permissions to EVS. If you do not have the granting permission, contact the user who has the Security Administrator permissions to grant KMS access permissions. For details, see <a href="en-us_topic_0047272493.html">Can All Users Use the Encryption Feature?</a></p>
@ -29,8 +27,9 @@
<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_b95921745110">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_b1954192512113">Xrole Name</strong>: set to <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b995482512219">EVSAccessKMS</strong>, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li152868131619"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b959511561916">KMS Key Name</strong>: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b2406645144311">Create KMS Key</strong> and create a new one on the KMS console. The default value is <strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_b626615844413">evs/default</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0144542112_li528671319610"><strong id="EN-US_TOPIC_0031523135__en-us_topic_0163572589_en-us_topic_0013859510_b842352706155046">KMS Key ID</strong>: specifies the ID of the key used by the encrypted data disk.</li></ul>
</li><li id="EN-US_TOPIC_0031523135__li17273849113530">(Optional) Select a <strong id="EN-US_TOPIC_0031523135__b84235270615319">License Type</strong> (<strong id="EN-US_TOPIC_0031523135__b842352706153129">Use license from the system</strong> or <strong id="EN-US_TOPIC_0031523135__b842352706153134">Bring your own license (BYOL)</strong>) if the changed OS running on your ECS is billed. For more details, see <a href="en-us_topic_0046566932.html">License Types</a>.<div class="p" id="EN-US_TOPIC_0031523135__p57004530113530">The following OSs are billed:<ul id="EN-US_TOPIC_0031523135__ul43278730113530"><li id="EN-US_TOPIC_0031523135__en-us_topic_0046566932_li2586589022251">SUSE Linux Enterprise Server</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0046566932_li6521605722253">Oracle Enterprise Linux</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0046566932_li37000181205155">Red Hat Enterprise Linux</li></ul>
</div>
</li><li id="EN-US_TOPIC_0031523135__li5336143212240">Select the login mode.<p id="EN-US_TOPIC_0031523135__p1154194111115"><a name="EN-US_TOPIC_0031523135__li5336143212240"></a><a name="li5336143212240"></a>If the target <span id="EN-US_TOPIC_0031523135__text1916311471252">ECS</span> uses key pair authentication, you can replace the original key pair.</p>
</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li4798821517833">Click <strong id="EN-US_TOPIC_0031523135__b153798544917">OK</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"><a name="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a><a name="en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a>In the <strong id="EN-US_TOPIC_0031523135__b20256959165614">Change ECS OS</strong> dialog box, confirm the specifications and click <strong id="EN-US_TOPIC_0031523135__b182574594563">Submit</strong>.<p id="EN-US_TOPIC_0031523135__p4013850816820">After the application is submitted, the ECS status changes to <strong id="EN-US_TOPIC_0031523135__b84235270616717">Changing OS</strong>. When this status disappears, the OS change is complete.</p>
</li><li id="EN-US_TOPIC_0031523135__li5336143212240">Set <strong id="EN-US_TOPIC_0031523135__b4126152512816">Login Mode</strong>.<p id="EN-US_TOPIC_0031523135__p171933385113">You can set the login mode for the <span id="EN-US_TOPIC_0031523135__text1214370115219">ECS</span> whose OS is to be changed based on service requirements.</p>
<ul id="EN-US_TOPIC_0031523135__ul6826113465817"><li id="EN-US_TOPIC_0031523135__li38261934205811">If you select <strong id="EN-US_TOPIC_0031523135__b181414361513">Password</strong> for <strong id="EN-US_TOPIC_0031523135__b0111363153">Login Mode</strong>, you can use the original password or enter a new one.</li><li id="EN-US_TOPIC_0031523135__li39011742192716">If you select <strong id="EN-US_TOPIC_0031523135__b623916121191">Key pair</strong> for <strong id="EN-US_TOPIC_0031523135__b15239812794">Login Mode</strong>, select an available key pair from the drop-down list or create a key pair. For details, see <a href="en-us_topic_0000001278350057.html">(Recommended) Creating a Key Pair on the Management Console</a>.</li></ul>
</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li4798821517833">Click <strong id="EN-US_TOPIC_0031523135__b153798544917">OK</strong>.</li><li id="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"><a name="EN-US_TOPIC_0031523135__en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a><a name="en-us_topic_0031523135_en-us_topic_0024911405_li45992498111556"></a>On the <strong id="EN-US_TOPIC_0031523135__b20256959165614">Change OS</strong> page, confirm the settings and click <strong id="EN-US_TOPIC_0031523135__b182574594563">Submit</strong>.<p id="EN-US_TOPIC_0031523135__p4013850816820">After the application is submitted, the ECS status changes to <strong id="EN-US_TOPIC_0031523135__b84235270616717">Changing OS</strong>. When this status disappears, the OS change is complete.</p>
<div class="note" id="EN-US_TOPIC_0031523135__note1993244016842"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0031523135__p3492635716815">During the OS change process, a temporary <span id="EN-US_TOPIC_0031523135__text26231188142">ECS</span> is created. After the OS change is complete, this <span id="EN-US_TOPIC_0031523135__text1418210226147">ECS</span> will be automatically deleted.</p>
</div></div>
</li></ol>

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</li><li id="EN-US_TOPIC_0032980085__li20909182423612">Add an existing ECS to an ECS group.</li></ul>
</li><li id="EN-US_TOPIC_0032980085__li890912415366"><a href="#EN-US_TOPIC_0032980085__section12553172594918">Removing an ECS from an ECS Group</a></li><li id="EN-US_TOPIC_0032980085__li262212451590"><a href="#EN-US_TOPIC_0032980085__section95601058404">Deleting an ECS Group</a></li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section1464061364114"><a name="EN-US_TOPIC_0032980085__section1464061364114"></a><a name="section1464061364114"></a><h4 class="sectiontitle">Creating an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p479295718598">Create an ECS group and associate the same policy to all group members. ECS groups are independent of each other.</p>
<div class="section" id="EN-US_TOPIC_0032980085__section1464061364114"><a name="EN-US_TOPIC_0032980085__section1464061364114"></a><a name="section1464061364114"></a><h4 class="sectiontitle">Creating an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p479295718598">Create an ECS group and select a policy for the group. This policy applies to all ECSs in the same group. ECS groups are independent of each other.</p>
<ol id="EN-US_TOPIC_0032980085__ol3711135973811"><li id="EN-US_TOPIC_0032980085__li14469519145710">Log in to the management console.</li><li id="EN-US_TOPIC_0032980085__li16711125916384">Click <span><img id="EN-US_TOPIC_0032980085__en-us_topic_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0032980085__li19711185903813">Under <strong id="EN-US_TOPIC_0032980085__b131310569376"><span id="EN-US_TOPIC_0032980085__text8313356143718">Computing</span></strong>, click <strong id="EN-US_TOPIC_0032980085__b1231375615374">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0032980085__li971125913386">In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0032980085__b1877381918409">ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li471116594389">On the <strong id="EN-US_TOPIC_0032980085__b15701922124014">ECS Group</strong> page, click <strong id="EN-US_TOPIC_0032980085__b127021822114017">Create ECS Group</strong>.</li><li id="EN-US_TOPIC_0032980085__li20711859193820">Enter the name of the ECS group.</li><li id="EN-US_TOPIC_0032980085__li371215920386">Select a policy for the ECS group.</li><li id="EN-US_TOPIC_0032980085__li57122059163815">Click <strong id="EN-US_TOPIC_0032980085__b84235270611586">OK</strong>.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0032980085__section1447818554481"><a name="EN-US_TOPIC_0032980085__section1447818554481"></a><a name="section1447818554481"></a><h4 class="sectiontitle">Adding an ECS to an ECS Group</h4><p id="EN-US_TOPIC_0032980085__p118166315312">To improve service reliability, you can add ECSs to an ECS group so that these ECSs in this group can run on different hosts.</p>

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<div class="section" id="EN-US_TOPIC_0035470096__section741930611313"><h4 class="sectiontitle">ECS Flavor Naming Rules</h4><p id="EN-US_TOPIC_0035470096__p2484458611326">ECS flavors are named in the "AB.C.D" format.</p>
<p id="EN-US_TOPIC_0035470096__p1331396311337">Example: s2.medium.4</p>
<p id="EN-US_TOPIC_0035470096__p1985920011446">The format is defined as follows:</p>
<ul id="EN-US_TOPIC_0035470096__ul5780315811459"><li id="EN-US_TOPIC_0035470096__li5046637411459"><strong id="EN-US_TOPIC_0035470096__b1468984664418">A</strong> specifies the ECS type. For example, <strong id="EN-US_TOPIC_0035470096__b106951046104414">s</strong> indicates a general-computing ECS, <strong id="EN-US_TOPIC_0035470096__b5696204644416">c</strong> a general computing-plus ECS, and <strong id="EN-US_TOPIC_0035470096__b8696134612442">m</strong> a memory-optimized ECS.</li><li id="EN-US_TOPIC_0035470096__li5154418311459"><strong id="EN-US_TOPIC_0035470096__b5569188194819">B</strong> specifies the type ID. For example, <strong id="EN-US_TOPIC_0035470096__b254064274614">3</strong> in <strong id="EN-US_TOPIC_0035470096__b454164210465">s3</strong> indicates the third-generation general-purpose ECS.</li><li id="EN-US_TOPIC_0035470096__li6124446611459"><strong id="EN-US_TOPIC_0035470096__b1780433431194419">C</strong> specifies the flavor size, such as medium, large, xlarge, 2xlarge, 4xlarge, or 8xlarge.</li><li id="EN-US_TOPIC_0035470096__li3693402711546"><strong id="EN-US_TOPIC_0035470096__b84235270611859">D</strong> specifies the ratio of memory to vCPUs expressed in a digit. For example, value <strong id="EN-US_TOPIC_0035470096__b842352706111144">4</strong> indicates that the ratio of memory to vCPUs is 4.</li></ul>
<ul id="EN-US_TOPIC_0035470096__ul5780315811459"><li id="EN-US_TOPIC_0035470096__li5046637411459"><strong id="EN-US_TOPIC_0035470096__b2964164614276">A</strong> indicates the instance family. For example, <strong id="EN-US_TOPIC_0035470096__b1096474672713">s</strong> indicates general computing, <strong id="EN-US_TOPIC_0035470096__b209641846122720">c</strong> indicates general computing-plus, and <strong id="EN-US_TOPIC_0035470096__b1196414468272">m</strong> indicates memory-optimized.</li><li id="EN-US_TOPIC_0035470096__li5154418311459"><strong id="EN-US_TOPIC_0035470096__b5569188194819">B</strong> indicates the instance generation. For example, <strong id="EN-US_TOPIC_0035470096__b254064274614">3</strong> in <strong id="EN-US_TOPIC_0035470096__b454164210465">s3</strong> indicates the general computing III generation.</li><li id="EN-US_TOPIC_0035470096__li6124446611459"><strong id="EN-US_TOPIC_0035470096__b1780433431194419">C</strong> indicates the instance size, such as medium, large, xlarge, 2xlarge, 4xlarge, and 8xlarge.</li><li id="EN-US_TOPIC_0035470096__li3693402711546"><strong id="EN-US_TOPIC_0035470096__b84235270611859">D</strong> indicates the ratio of memory to vCPUs expressed in a digit. For example, value <strong id="EN-US_TOPIC_0035470096__b842352706111144">4</strong> indicates that the ratio of memory to vCPUs is 4.</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0035470096__section3154475711225"><h4 class="sectiontitle">How Do I Know My <span id="EN-US_TOPIC_0035470096__text18719125685814">ECS</span> Flavor?</h4><p id="EN-US_TOPIC_0035470096__en-us_topic_0030888081_en-us_topic_0029599331_p43304173161639">When creating an ECS, you can view the flavors in the flavor list.</p>
<div class="fignone" id="EN-US_TOPIC_0035470096__fig64292023143619"><span class="figcap"><b>Figure 1 </b>ECS flavors</span><br><span><img id="EN-US_TOPIC_0035470096__image1193819102293" src="en-us_image_0000002367660492.png" title="Click to enlarge" class="imgResize"></span></div>
</div>
<div class="section" id="EN-US_TOPIC_0035470096__section196385116449"><h4 class="sectiontitle">vCPU</h4><p id="EN-US_TOPIC_0035470096__p194105569440">ECS supports hyper-threading, which enables two threads to run concurrently on a single CPU core. Each thread is represented as a virtual CPU (vCPU), and a CPU core contains two vCPUs (logical cores).</p>
<div class="section" id="EN-US_TOPIC_0035470096__section196385116449"><h4 class="sectiontitle">vCPU</h4><p id="EN-US_TOPIC_0035470096__p194105569440">ECS supports hyper-threading, which enables two threads to run concurrently on a single CPU core. Each thread is represented as a virtual CPU (vCPU). When hyper-threading is enabled, each CPU core contains two vCPUs available to your workloads.</p>
<p id="EN-US_TOPIC_0035470096__p171598402414">For example, a 2-core physical CPU contains 4 vCPUs (threads).</p>
<p id="EN-US_TOPIC_0035470096__p81103624219">Hyper-threading is enabled for most ECS flavors by default. If hyper-threading is disabled during the <span id="EN-US_TOPIC_0035470096__text1880945511618">ECS</span> creation or flavor change, the number of vCPUs is half of the number of vCPUs defined by the ECS flavor.</p>
</div>
<div class="section" id="EN-US_TOPIC_0035470096__section9843135016217"><h4 class="sectiontitle">Network QoS</h4><p id="EN-US_TOPIC_0035470096__p2719863452">Network QoS uses basic technologies to improve the quality of network communication. A network with QoS enabled offers predictable network performance and effectively allocates network bandwidth.</p>
<p id="EN-US_TOPIC_0035470096__p177731525134614">For details about the QoS data of an ECS flavor, including the maximum/assured network bandwidth (Gbit/s), maximum network PPS, and maximum NIC queues, see <a href="en-us_topic_0177512565.html">A Summary List of ECS Specifications</a>.</p>
<div class="p" id="EN-US_TOPIC_0035470096__p835110576352">Constraints on network performance vary depending on <span id="EN-US_TOPIC_0035470096__text11994112819112">ECS</span> flavors.<ul id="EN-US_TOPIC_0035470096__ul123521357113516"><li id="EN-US_TOPIC_0035470096__li37913491485">Assured network bandwidth: indicates the guaranteed bandwidth allocated to an ECS when there is a network bandwidth contention in the entire network.</li><li id="EN-US_TOPIC_0035470096__li379249134818">Maximum network bandwidth: indicates the maximum bandwidth that can be allocated to an ECS when the ECS does not compete for network bandwidth (other ECSs on the host do not have high requirements on network bandwidth).</li><li id="EN-US_TOPIC_0035470096__li2352195783519">Maximum network PPS: indicates the maximum number of packets that an ECS can transmit and receive per second.<p id="EN-US_TOPIC_0035470096__p167561739502"><a name="EN-US_TOPIC_0035470096__li2352195783519"></a><a name="li2352195783519"></a>Packets per second (PPS): indicates the number of packets received and sent per second. It is usually used to measure the network performance.</p>
</li><li id="EN-US_TOPIC_0035470096__li192851238163616">NIC multi-queues: allocates NIC interruptions to multiple vCPUs for higher PPS performance and bandwidth</li><li id="EN-US_TOPIC_0035470096__li839012814476">Maximum NICs: indicates the maximum number of NICs that can be attached to an ECS.</li><li id="EN-US_TOPIC_0035470096__li1444103915474">Maximum supplementary NICs: indicates the maximum number of supplementary NICs that can be attached to an <span id="EN-US_TOPIC_0035470096__text146199522473">ECS</span>.</li></ul>
</li><li id="EN-US_TOPIC_0035470096__li192851238163616">NIC multi-queues: allocates NIC interruptions to multiple vCPUs for higher PPS performance and bandwidth</li><li id="EN-US_TOPIC_0035470096__li839012814476">Maximum NICs: indicates the maximum number of NICs that can be attached to an ECS.</li></ul>
<div class="note" id="EN-US_TOPIC_0035470096__note439042864715"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0035470096__ul1439014285471"><li id="EN-US_TOPIC_0035470096__li239011287472">For instructions about how to test PPS, see <a href="en-us_topic_0115820205.html">How Can I Test the Network Performance of Linux ECSs?</a></li><li id="EN-US_TOPIC_0035470096__li17390182813478">For instructions about how to enable NIC multi-queue, see <a href="en-us_topic_0058758453.html">Enabling NIC Multi-Queue</a>.</li><li id="EN-US_TOPIC_0035470096__li6651911036">The maximum bandwidth is the total bandwidth allocated to an ECS. If an ECS has multiple NICs, the sum of the maximum bandwidths allocated to all NICs cannot exceed the maximum bandwidth allocated to the ECS.</li></ul>
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</li></ol>
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</li></ul>
</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li1717385122398">The local disk data of a D2 ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application does not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li2034693822398">When a D2 ECS is deleted, its local disk data will also be automatically deleted, which can take some time. As a result, a D2 ECS takes a longer time than other ECSs to be deleted. Back up the data before deleting such an ECS.</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li4890471922398">Do not store service data in local disks for a long time. Instead, store it in EVS disks. To improve data security, use a high availability architecture and back up data in a timely manner.</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li1242239722417">Local disks can only be purchased during D2 ECS creation. The quantity and capacity of your local disks are determined according to the specifications of your ECS.</li></ul>
</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li1717385122398">The local disk data of a D2 ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application does not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li2034693822398">When a D2 ECS is deleted, its local disk data will also be automatically deleted. Back up data in advance. Deleting local disk data will increase the time needed to release resources compared with ECSs without local disks.</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li4890471922398">Do not store service data in local disks for a long time. Instead, store it in EVS disks. To improve data security, use a high availability architecture and back up data in a timely manner.</li><li id="EN-US_TOPIC_0035470099__en-us_topic_0088142885_li1242239722417">Local disks can only be purchased during D2 ECS creation. The quantity and capacity of your local disks are determined according to the specifications of your ECS.</li></ul>
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<h1 class="topictitle1">Viewing the ECS Creation Status</h1>
<div id="body1475916349625"><div class="section" id="EN-US_TOPIC_0039588795__section52267161284"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0039588795__p192271016152813">After submitting the request for creating an <span id="EN-US_TOPIC_0039588795__text67111012253">ECS</span>, you can view the creation status. This section describes how to view the creation status of an <span id="EN-US_TOPIC_0039588795__text174152252512">ECS</span>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0039588795__section40936232171845"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0039588795__ol1607973117228"><li id="EN-US_TOPIC_0039588795__li14469519145710">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_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0039588795__li1859019014179">Under <strong id="EN-US_TOPIC_0039588795__b1315112356312"><span id="EN-US_TOPIC_0039588795__text13151183518317">Computing</span></strong>, click <strong id="EN-US_TOPIC_0039588795__b1815216356318">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0039588795__li8248795172237">After creating an ECS, view the creation status above the ECS list beside the common operations (<strong id="EN-US_TOPIC_0039588795__b842352706224353">Start</strong>, <strong id="EN-US_TOPIC_0039588795__b842352706224359">Stop</strong>, <strong id="EN-US_TOPIC_0039588795__b842352706224412">Restart</strong>, and <strong id="EN-US_TOPIC_0039588795__b1256162714514">Delete</strong>).<div class="fignone" id="EN-US_TOPIC_0039588795__fig95001618173416"><span class="figcap"><b>Figure 1 </b>ECS creation status</span><br><span><img id="EN-US_TOPIC_0039588795__image750151803413" src="en-us_image_0000001705420301.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0039588795__li5737160017537">Click the number displayed above <strong id="EN-US_TOPIC_0039588795__b842352706193120">Creating</strong> and view task details.<div class="note" id="EN-US_TOPIC_0039588795__note757395218525"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0039588795__ul8917181844517"><li id="EN-US_TOPIC_0039588795__li124091521144514">An ECS that is being created is in one of the following states:<ul id="EN-US_TOPIC_0039588795__ul71264208715"><li id="EN-US_TOPIC_0039588795__li1412652020718"><strong id="EN-US_TOPIC_0039588795__b842352706171726">Creating</strong>: The ECS is being created.</li><li id="EN-US_TOPIC_0039588795__li62730432364"><strong id="EN-US_TOPIC_0039588795__b1962779580">Faulty</strong>: Creating the ECS failed. For a failed task, the system rolls back the task and displays an error code, for example, <strong id="EN-US_TOPIC_0039588795__b138174932913">Ecs.0013 Insufficient EIP quota</strong>.</li><li id="EN-US_TOPIC_0039588795__li11517121613158"><strong id="EN-US_TOPIC_0039588795__b1595712651">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__li14469519145710">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_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0039588795__li1859019014179">Under <strong id="EN-US_TOPIC_0039588795__b138881188273"><span id="EN-US_TOPIC_0039588795__text1275161811259">Computing</span></strong>, select <strong id="EN-US_TOPIC_0039588795__b11888148142715">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0039588795__li8248795172237">After creating an ECS, view the creation status above the ECS list beside the common operations (<strong id="EN-US_TOPIC_0039588795__b842352706224353">Start</strong>, <strong id="EN-US_TOPIC_0039588795__b842352706224359">Stop</strong>, <strong id="EN-US_TOPIC_0039588795__b842352706224412">Restart</strong>, and <strong id="EN-US_TOPIC_0039588795__b1256162714514">Delete</strong>).<div class="fignone" id="EN-US_TOPIC_0039588795__fig95001618173416"><span class="figcap"><b>Figure 1 </b>ECS creation status</span><br><span><img id="EN-US_TOPIC_0039588795__image750151803413" src="en-us_image_0000001705420301.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0039588795__li5737160017537">Click the number displayed above <strong id="EN-US_TOPIC_0039588795__b842352706193120">Creating</strong> and view task details.<div class="note" id="EN-US_TOPIC_0039588795__note757395218525"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0039588795__ul8917181844517"><li id="EN-US_TOPIC_0039588795__li124091521144514">An ECS that is being created is in one of the following states:<ul id="EN-US_TOPIC_0039588795__ul71264208715"><li id="EN-US_TOPIC_0039588795__li1412652020718"><strong id="EN-US_TOPIC_0039588795__b842352706171726">Creating</strong>: The ECS is being created.</li><li id="EN-US_TOPIC_0039588795__li62730432364"><strong id="EN-US_TOPIC_0039588795__b247618988">Faulty</strong>: Creating the ECS failed. For a failed task, the system rolls back the task and displays an error code, for example, <strong id="EN-US_TOPIC_0039588795__b138174932913">Ecs.0013 Insufficient EIP quota</strong>.</li><li id="EN-US_TOPIC_0039588795__li11517121613158"><strong id="EN-US_TOPIC_0039588795__b89645686">Running</strong>: The request of creating the ECS has been processed, and the ECS is running properly. An ECS in this state can provide services for you.<p id="EN-US_TOPIC_0039588795__p15171216151514">See <a href="en-us_topic_0032398121.html">How Do I Handle Error Messages Displayed on the Management Console?</a> for troubleshooting.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0039588795__li16917201819452">If you find that the task status area shows an ECS creation failure but the ECS has been created successfully and displayed in the ECS list, see <a href="en-us_topic_0039524582.html">Why Does the Failures Area Show an ECS Creation Failure But the ECS List Displays the Created ECS?</a></li></ul>
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</th>
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<tbody><tr id="EN-US_TOPIC_0041169567__row527214573554"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p1627310579557">2026-01-14</p>
<tbody><tr id="EN-US_TOPIC_0041169567__row674519426375"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p4746204233712">2026-03-02</p>
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<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p11679158143710">Modified the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul167419123817"><li id="EN-US_TOPIC_0041169567__li16741131123811">Added x1.2xlarge.2, x1.2xlarge.3, and x1.2xlarge.4 flavors in <a href="en-us_topic_0035470101.html">General-Purpose ECSs</a>.</li><li id="EN-US_TOPIC_0041169567__li5879339163817">Added x1e.2xlarge.2, x1e.2xlarge.3, and x1e.2xlarge.4 flavors in <a href="en-us_topic_0091224748.html">Dedicated General-Purpose ECSs</a>.</li></ul>
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<tr id="EN-US_TOPIC_0041169567__row527214573554"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p1627310579557">2026-01-14</p>
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<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p14601141225616">Modified the following content:</p>
<p id="EN-US_TOPIC_0041169567__p107170154531">Added S9 ECSs in <a href="en-us_topic_0035470101.html">General-Purpose ECSs</a>.</p>
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<tr id="EN-US_TOPIC_0041169567__row930254414424"><td class="cellrowborder" valign="top" width="18.970000000000002%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0041169567__p193021144154218">2018-02-03</p>
</td>
<td class="cellrowborder" valign="top" width="81.03%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0041169567__p19302744104214">Added the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul1423812253439"><li id="EN-US_TOPIC_0041169567__li19021912175">6.7.2-Changing a General-Purpose ECS to an H1 ECS</li><li id="EN-US_TOPIC_0041169567__li196981035141913">Installing an NVIDIA GPU Driver and CUDA Toolkit on a P1 ECS</li><li id="EN-US_TOPIC_0041169567__li1558521012614"><a href="en-us_topic_0094801708.html">What Can I Do If Switching from a Non-root User to User root Times Out?</a></li><li id="EN-US_TOPIC_0041169567__li8247032182518"><a href="en-us_topic_0093153741.html">Why Is the Memory of an ECS Obtained by Running the free Command Inconsistent with the Actual Memory?</a></li></ul>
<ul id="EN-US_TOPIC_0041169567__ul1423812253439"><li id="EN-US_TOPIC_0041169567__li19021912175">6.7.2-Changing a General-Purpose ECS to an H1 ECS</li><li id="EN-US_TOPIC_0041169567__li196981035141913">Installing an NVIDIA GPU Driver and CUDA Toolkit on a P1 ECS</li><li id="EN-US_TOPIC_0041169567__li1558521012614"><a href="en-us_topic_0094801708.html">What Can I Do If Switching from a Non-root User to a Root User Timed Out?</a></li><li id="EN-US_TOPIC_0041169567__li8247032182518"><a href="en-us_topic_0093153741.html">Why Is the Memory of an ECS Obtained by Running the free Command Inconsistent with the Actual Memory?</a></li></ul>
<p id="EN-US_TOPIC_0041169567__p292010575425">Modified the following content:</p>
<ul id="EN-US_TOPIC_0041169567__ul1777341154317"><li id="EN-US_TOPIC_0041169567__li1777341144316">Modified the document structure.</li><li id="EN-US_TOPIC_0041169567__li1489183812433">Allowed to modify specifications between general-purpose (S1, C1, C2, or M1) ECSs and H1 ECSs in <a href="en-us_topic_0013771092.html">Modifying Specifications of Individual ECSs</a>.</li><li id="EN-US_TOPIC_0041169567__li186552556219">Updated the description and screenshots for selecting ECS types during ECS creation because the GUI has been modified.</li><li id="EN-US_TOPIC_0041169567__li68801517112318">Modified description in <a href="en-us_topic_0018073215.html">Can I Attach Multiple Disks to an ECS?</a>, allowing you to attach up to 60 EVS disks to an ECS.</li><li id="EN-US_TOPIC_0041169567__li424464442411">Modified default configurations during ECS creation in <a href="en-us_topic_0092499768.html">Overview</a>. Specifically, no built-in tags will be created for an ECS by default.</li><li id="EN-US_TOPIC_0041169567__li11701194165013">Added "Follow-up Procedure" in <a href="en-us_topic_0013771092.html">Modifying Specifications of Individual ECSs</a>.</li></ul>
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<div class="section" id="EN-US_TOPIC_0046566932__section19960063221428"><h4 class="sectiontitle">BYOL</h4><p id="EN-US_TOPIC_0046566932__p757887022162"><strong id="EN-US_TOPIC_0046566932__b842352706202245">What Is BYOL?</strong></p>
<p id="EN-US_TOPIC_0046566932__p50854401102852">Bring your own license (BYOL) allows you to use your existing OS license. In such a case, you do not need to apply for a license again. If you use BYOL when purchasing an <span id="EN-US_TOPIC_0046566932__text4621412113614">ECS</span>, you do not need to pay for the license.</p>
<p id="EN-US_TOPIC_0046566932__p30626799221641"></p>
<p id="EN-US_TOPIC_0046566932__p55172571221648"><strong id="EN-US_TOPIC_0046566932__b842352706202641">How to Use BYOL?</strong></p>
<p id="EN-US_TOPIC_0046566932__p50630099221825">If you select the BYOL license type, you are required to manage licenses by yourself. The cloud platform provides functions for you to maintain license compliance during the license lifecycle. For example, when deploying <span id="EN-US_TOPIC_0046566932__text117313341574">ECS</span>s on DeHs, you need to manage licenses by yourself. If you have obtained an OS license, you do not need to apply for a license.</p>
<p id="EN-US_TOPIC_0046566932__p55172571221648"><strong id="EN-US_TOPIC_0046566932__b842352706202641">How Do I Use BYOL?</strong></p>
<p id="EN-US_TOPIC_0046566932__p50630099221825">If you select the BYOL license type, you need to manage licenses by yourself. The cloud platform provides functions to help you maintain license compliance during the license lifecycle. For example, when deploying <span id="EN-US_TOPIC_0046566932__text117313341574">ECS</span>s on DeHs, you need to manage licenses by yourself. If you already have an OS license, you do not need to apply for a license again.</p>
</div>
<div class="p" id="EN-US_TOPIC_0046566932__p46529483205117">The OSs supporting BYOL are as follows:<ul id="EN-US_TOPIC_0046566932__ul55183157205155"><li id="EN-US_TOPIC_0046566932__li2586589022251">SUSE Linux Enterprise Server</li><li id="EN-US_TOPIC_0046566932__li6521605722253">Oracle Enterprise Linux</li><li id="EN-US_TOPIC_0046566932__li37000181205155">Red Hat Enterprise Linux</li></ul>
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<p id="EN-US_TOPIC_0079176727__p55811741194742">The value of parameter <strong id="EN-US_TOPIC_0079176727__b8423527069240">PASS_MAX_DAYS</strong> is the password validity period.</p>
</li><li id="EN-US_TOPIC_0079176727__li32543628194742">Run the following command to change the value of parameter <strong id="EN-US_TOPIC_0079176727__b296782437111149">PASS_MAX_DAYS</strong>:<p id="EN-US_TOPIC_0079176727__p18788175194742"><strong id="EN-US_TOPIC_0079176727__b34875855194742">chage -M</strong> <em id="EN-US_TOPIC_0079176727__i45447244194742">99999 user_name</em></p>
<p id="EN-US_TOPIC_0079176727__p21504994195639"><em id="EN-US_TOPIC_0079176727__i534243209318">99999</em> is the password validity period, and <em id="EN-US_TOPIC_0079176727__i14615922829334">user_name</em> is the system user, for example, user <strong id="EN-US_TOPIC_0079176727__b8423527069353">root</strong>.</p>
<div class="note" id="EN-US_TOPIC_0079176727__note4498767520418"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0079176727__p223589620418">You are advised to configure the password validity period as needed and change it at a regular basis.</p>
<div class="note" id="EN-US_TOPIC_0079176727__note4498767520418"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0079176727__p223589620418">You are advised to configure the password validity period as needed and change it on a regular basis.</p>
</div></div>
</li><li id="EN-US_TOPIC_0079176727__li65078660194742">Run command <strong id="EN-US_TOPIC_0079176727__b10576932629124">vi /etc/login.defs</strong> to verify that the configuration has taken effect.<div class="fignone" id="EN-US_TOPIC_0079176727__fig36880073194742"><span class="figcap"><b>Figure 1 </b>Configuration verification</span><br><span><img id="EN-US_TOPIC_0079176727__image34495914194742" src="en-us_image_0079177144.png" title="Click to enlarge" class="imgResize"></span></div>
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<h1 class="topictitle1">ECS Overview</h1>
<div id="body1515549275910"><p id="EN-US_TOPIC_0092435779__p759419713185">An <span id="EN-US_TOPIC_0092435779__text12882010366">ECS</span> is a basic computing unit that consists of vCPUs, memory, OS, and EVS disks.</p>
<p id="EN-US_TOPIC_0092435779__p6400115112117">After creating an <span id="EN-US_TOPIC_0092435779__text619641819383">ECS</span>, you can use it like using your local computer or physical server, ensuring secure, reliable, and efficient computing. <span id="EN-US_TOPIC_0092435779__text12220615163814">ECS</span>s support self-service creation, modification, and operation. You can create an <span id="EN-US_TOPIC_0092435779__text9976165913289">ECS</span> by specifying its vCPUs, memory, OS, and login authentication. After the <span id="EN-US_TOPIC_0092435779__text5206151614291">ECS</span> is created, you can modify its specifications as required. This ensures a reliable, secure, efficient computing environment.</p>
<div class="p" id="EN-US_TOPIC_0092435779__p1946311516347">The cloud platform provides multiple ECS types for different computing and storage capabilities. One ECS type provides various flavors with different vCPU and memory configurations for you to select.<ul id="EN-US_TOPIC_0092435779__ul158438016377"><li id="EN-US_TOPIC_0092435779__li3843120173716">For details about ECS types, see <a href="en-us_topic_0035470096.html">ECS Types</a>.</li><li id="EN-US_TOPIC_0092435779__li178431053718">For details about all ECS statuses in a lifecycle, see <a href="en-us_topic_0140323150.html">ECS Lifecycle</a>.</li><li id="EN-US_TOPIC_0092435779__li696502511016">For details about ECS specifications, see <a href="en-us_topic_0177512565.html">A Summary List of ECS Specifications</a>.</li></ul>
<div class="p" id="EN-US_TOPIC_0092435779__p1946311516347">The cloud platform provides multiple ECS types for different compute and storage capabilities. One ECS type provides various flavors with different vCPU and memory configurations for you to select.<ul id="EN-US_TOPIC_0092435779__ul158438016377"><li id="EN-US_TOPIC_0092435779__li3843120173716">For details about ECS types, see <a href="en-us_topic_0035470096.html">ECS Types</a>.</li><li id="EN-US_TOPIC_0092435779__li178431053718">For details about all ECS statuses in a lifecycle, see <a href="en-us_topic_0140323150.html">ECS Lifecycle</a>.</li><li id="EN-US_TOPIC_0092435779__li696502511016">For details about ECS specifications, see <a href="en-us_topic_0177512565.html">A Summary List of ECS Specifications</a>.</li></ul>
</div>
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<a name="EN-US_TOPIC_0092494943"></a><a name="EN-US_TOPIC_0092494943"></a>
<h1 class="topictitle1">Login Overview (Windows)</h1>
<div id="body1515568554882"><div class="section" id="EN-US_TOPIC_0092494943__section2984424226"><h4 class="sectiontitle">Constraints</h4><ul id="EN-US_TOPIC_0092494943__ul863525411220"><li id="EN-US_TOPIC_0092494943__li1635654172217">Only a running <span id="EN-US_TOPIC_0092494943__text5133205714112">ECS</span> can be logged in to.</li><li id="EN-US_TOPIC_0092494943__li041110543018">For ECSs created using public images, the login usernames, passwords, and constraints vary depending on OSs running on the ECSs. For details, see <em id="EN-US_TOPIC_0092494943__i1818212913102"><a href="https://docs.otc.t-systems.com/image-management-service/public-images/" target="_blank" rel="noopener noreferrer">Image Management Service - Public Image Introduction</a></em>.</li><li id="EN-US_TOPIC_0092494943__li1492786142512">If an <span id="EN-US_TOPIC_0092494943__text17417113115492">ECS</span> uses key pair authentication, use the password obtaining function available on the management console to decrypt the private key used during <span id="EN-US_TOPIC_0092494943__text18418153110495">ECS</span> creation to obtain a password.</li><li id="EN-US_TOPIC_0092494943__li7510320142811">Certain G-series ECSs do not support remote login from the console. If you need to remotely log in to the ECSs, install the VNC server on them. For details, see <a href="en-us_topic_0097289624.html">GPU-accelerated ECSs</a>. You are advised to log in to such ECSs using MSTSC.</li><li id="EN-US_TOPIC_0092494943__li1568612254520">If you log in to a GPU-accelerated <span id="EN-US_TOPIC_0092494943__text12764861420">ECS</span> using MSTSC, GPU acceleration will fail. This is because MSTSC replaces the WDDM GPU driver with a non-accelerated remote desktop display driver. In such a case, you must log in to the ECS using other methods, such as VNC. If the remote login function provided by the management console cannot meet your service requirements, you must install a suitable remote login tool, such as TightVNC, on the <span id="EN-US_TOPIC_0092494943__text1238635161017">ECS</span>.<p id="EN-US_TOPIC_0092494943__p156863251659">To download TightVNC, log in at <a href="https://www.tightvnc.com/download.php" target="_blank" rel="noopener noreferrer">https://www.tightvnc.com/download.php</a>.</p>
<div id="body1515568554882"><div class="section" id="EN-US_TOPIC_0092494943__section2984424226"><h4 class="sectiontitle">Constraints</h4><ul id="EN-US_TOPIC_0092494943__ul863525411220"><li id="EN-US_TOPIC_0092494943__li1635654172217">You can only log in to a running <span id="EN-US_TOPIC_0092494943__text5133205714112">ECS</span>.</li><li id="EN-US_TOPIC_0092494943__li041110543018">For ECSs created using public images, the login usernames, passwords, and constraints vary depending on OSs running on the ECSs. For details, see <em id="EN-US_TOPIC_0092494943__i1818212913102"><a href="https://docs.otc.t-systems.com/image-management-service/public-images/" target="_blank" rel="noopener noreferrer">Image Management Service - Public Image Introduction</a></em>.</li><li id="EN-US_TOPIC_0092494943__li1492786142512">If an <span id="EN-US_TOPIC_0092494943__text8600183182516">ECS</span> uses key pair authentication, use the Get Password function on the management console to parse the private key file used during <span id="EN-US_TOPIC_0092494943__text19418944135810">ECS</span> creation into a password, and then use the password to log in to the <span id="EN-US_TOPIC_0092494943__text208975151917">ECS</span>.<p id="EN-US_TOPIC_0092494943__p1859565560">For details, see <a href="en-us_topic_0031107266.html">Obtaining the Password for Logging In to a Windows ECS</a>.</p>
</li><li id="EN-US_TOPIC_0092494943__li7510320142811">Certain G-series ECSs do not support remote login from the console. If you need to remotely log in to the ECSs, install the VNC server on them. For details, see <a href="en-us_topic_0097289624.html">GPU-accelerated ECSs</a>. You are advised to log in to such ECSs using MSTSC.</li><li id="EN-US_TOPIC_0092494943__li1568612254520">If you log in to a GPU-accelerated <span id="EN-US_TOPIC_0092494943__text12764861420">ECS</span> using MSTSC, GPU acceleration will fail. This is because MSTSC replaces the WDDM GPU driver with a non-accelerated remote desktop display driver. In such a case, you must log in to the ECS using other methods, such as VNC. If the remote login function provided by the management console cannot meet your service requirements, you must install a suitable remote login tool, such as TightVNC, on the <span id="EN-US_TOPIC_0092494943__text1238635161017">ECS</span>.<p id="EN-US_TOPIC_0092494943__p156863251659">To download TightVNC, log in at <a href="https://www.tightvnc.com/download.php" target="_blank" rel="noopener noreferrer">https://www.tightvnc.com/download.php</a>.</p>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0092494943__section15582182172010"><h4 class="sectiontitle">Login Modes</h4><p id="EN-US_TOPIC_0092494943__p4384182792315">You can choose from a variety of login modes based on your local OS type.</p>

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</div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li48438585164848">If the password used when you create the ECS is entered using the English keyboard, you must use the English keyboard to enter the password when logging in to the ECS later.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section46750509111459"><a name="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section46750509111459"></a><a name="en-us_topic_0027268511_section46750509111459"></a><h4 class="sectiontitle">Logging In to an ECS Using an English Keyboard</h4><ol id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ol28694912111459"><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li56927618111459">Log in to the management console.</li><li id="EN-US_TOPIC_0093263550__li464234814566">Click <span><img id="EN-US_TOPIC_0093263550__image1858131720102" src="en-us_image_0000002357961897.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li38109735111614">Under <strong id="EN-US_TOPIC_0093263550__b1857510535715">Computing</strong>, click <strong id="EN-US_TOPIC_0093263550__b7575115317713">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li26955662111459">In the search box above the ECS list, enter the ECS name and click <span><img id="EN-US_TOPIC_0093263550__image770443928104314" src="en-us_image_0128851444.png"></span> for search.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li16881493111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0093263550__b27882506151141">Remote Login</strong> in the <strong id="EN-US_TOPIC_0093263550__b49615964151141">Operation</strong> column.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17715715111459"><a name="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17715715111459"></a><a name="en-us_topic_0027268511_li17715715111459"></a>In the displayed <strong id="EN-US_TOPIC_0093263550__b1064769323195924">Configure Keyboard Layout for Remote Login</strong> dialog box, select the English keyboard.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_fig25223713111459"><span class="figcap"><b>Figure 1 </b>Keyboard layout configuration</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_image158461630132511" src="en-us_image_0000002176822257.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="section" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section46750509111459"><a name="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section46750509111459"></a><a name="en-us_topic_0027268511_section46750509111459"></a><h4 class="sectiontitle">Logging In to an ECS Using an English Keyboard</h4><ol id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ol28694912111459"><li id="EN-US_TOPIC_0093263550__en-us_topic_0013859510_en-us_topic_0027498860_li1469786919405">Log in to the management console.</li><li id="EN-US_TOPIC_0093263550__li464234814566">Click <span><img id="EN-US_TOPIC_0093263550__en-us_topic_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li38109735111614">Under <strong id="EN-US_TOPIC_0093263550__b1857510535715">Computing</strong>, click <strong id="EN-US_TOPIC_0093263550__b7575115317713">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li26955662111459">In the search box above the ECS list, enter the ECS name and click <span><img id="EN-US_TOPIC_0093263550__image770443928104314" src="en-us_image_0128851444.png"></span> for search.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li16881493111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0093263550__b27882506151141">Remote Login</strong> in the <strong id="EN-US_TOPIC_0093263550__b49615964151141">Operation</strong> column.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17715715111459"><a name="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17715715111459"></a><a name="en-us_topic_0027268511_li17715715111459"></a>In the displayed <strong id="EN-US_TOPIC_0093263550__b1064769323195924">Configure Keyboard Layout for Remote Login</strong> dialog box, select the English keyboard.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_fig25223713111459"><span class="figcap"><b>Figure 1 </b>Keyboard layout configuration</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_image158461630132511" src="en-us_image_0000002176822257.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li258703111459">Click <strong id="EN-US_TOPIC_0093263550__b842352706112241">Remote Login</strong>.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li2328327111459">(Optional) If you have changed the system language, in the displayed dialog box, click <strong id="EN-US_TOPIC_0093263550__b18973162323215">Remote Login</strong>.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_fig54376817111459"><span class="figcap"><b>Figure 2 </b>Remote Login</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_image1668613445268" src="en-us_image_0000002141305390.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li9384301192014">(Optional) When the system displays "Press CTRL+ALT+DELETE to log on", click <strong id="EN-US_TOPIC_0093263550__b842352706201616">Send CtrlAltDel</strong> in the upper part of the remote login page to log in to the ECS.<div class="fignone" id="EN-US_TOPIC_0093263550__fig51941916112020"><span class="figcap"><b>Figure 3 </b>Send CtrlAltDel</span><br><span><img id="EN-US_TOPIC_0093263550__image14194191614209" src="en-us_image_0201100229.png"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li8128490194410">(Optional) If you need your cursor to be displayed on the remote login page, click <strong id="EN-US_TOPIC_0093263550__b1433582633116">Local Cursor</strong>.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_fig3022163194924"><span class="figcap"><b>Figure 4 </b>Local Cursor</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_en-us_topic_0036067988_image5640621116424" src="en-us_image_0093469181.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li46470107111459">Enter the ECS password as prompted.</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section5982347111459"><a name="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section5982347111459"></a><a name="en-us_topic_0027268511_section5982347111459"></a><h4 class="sectiontitle">Logging In to an ECS Using a Non-English Keyboard</h4><ol id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ol14808116111459"><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li66164181111459">Log in to the management console.</li><li id="EN-US_TOPIC_0093263550__li132914364171">Click <span><img id="EN-US_TOPIC_0093263550__en-us_topic_0014250631_en-us_topic_0014250631_image1733511156361" src="en-us_image_0000002323963330.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17452565111640">Under <strong id="EN-US_TOPIC_0093263550__b858013531875">Computing</strong>, click <strong id="EN-US_TOPIC_0093263550__b658045311715">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li49523598111459">In the search box above the ECS list, enter the ECS name, IP address, or ID, and click <span><img id="EN-US_TOPIC_0093263550__image246119121104258" src="en-us_image_0128851405.png"></span> for search.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li50214528111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0093263550__b1797127330">Remote Login</strong> in the <strong id="EN-US_TOPIC_0093263550__b283012149">Operation</strong> column.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li49277573111459">In the displayed <strong id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_b1064769323195924">Configure Keyboard Layout for Remote Login</strong> dialog box, select the English keyboard.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_fig25223713111459"><span class="figcap"><b>Figure 5 </b>Keyboard layout configuration</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_image158461630132511" src="en-us_image_0000002176822257.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol><ol start="7" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ol65873268111459"><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li55988502111459">Click <strong id="EN-US_TOPIC_0093263550__b1665267609">Remote Login</strong>.</li><li id="EN-US_TOPIC_0093263550__li10982133714714">(Optional) If you have changed the system language, in the displayed dialog box, click <strong id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_b18973162323215">Remote Login</strong>.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_fig54376817111459"><span class="figcap"><b>Figure 6 </b>Remote Login</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_image1668613445268" src="en-us_image_0000002141305390.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li56190747193213">(Optional) When the system displays "Press CTRL+ALT+DELETE to log on", click <strong id="EN-US_TOPIC_0093263550__b247886158">Send CtrlAltDel</strong> in the upper part of the remote login page to log in to the ECS.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0027290684_fig22996848191913"><span class="figcap"><b>Figure 7 </b>Send CtrlAltDel</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0027290684_image50805371191913" src="en-us_image_0201103161.png"></span></div>
<div class="section" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section5982347111459"><a name="EN-US_TOPIC_0093263550__en-us_topic_0027268511_section5982347111459"></a><a name="en-us_topic_0027268511_section5982347111459"></a><h4 class="sectiontitle">Logging In to an ECS Using a Non-English Keyboard</h4><ol id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ol14808116111459"><li id="EN-US_TOPIC_0093263550__li14826941135412">Log in to the management console.</li><li id="EN-US_TOPIC_0093263550__li132914364171">Click <span><img id="EN-US_TOPIC_0093263550__en-us_topic_0000001825604541_image9499446838_1" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17452565111640">Under <strong id="EN-US_TOPIC_0093263550__b858013531875">Computing</strong>, click <strong id="EN-US_TOPIC_0093263550__b658045311715">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li49523598111459">In the search box above the ECS list, enter the ECS name, IP address, or ID, and click <span><img id="EN-US_TOPIC_0093263550__image246119121104258" src="en-us_image_0128851405.png"></span> for search.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li50214528111459">Locate the row containing the ECS and click <strong id="EN-US_TOPIC_0093263550__b1176005883">Remote Login</strong> in the <strong id="EN-US_TOPIC_0093263550__b1390024382">Operation</strong> column.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li49277573111459">In the displayed <strong id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_b1064769323195924">Configure Keyboard Layout for Remote Login</strong> dialog box, select the English keyboard.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_fig25223713111459"><span class="figcap"><b>Figure 5 </b>Keyboard layout configuration</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_image158461630132511" src="en-us_image_0000002176822257.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol><ol start="7" id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ol65873268111459"><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li55988502111459">Click <strong id="EN-US_TOPIC_0093263550__b1873051694">Remote Login</strong>.</li><li id="EN-US_TOPIC_0093263550__li10982133714714">(Optional) If you have changed the system language, in the displayed dialog box, click <strong id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_b18973162323215">Remote Login</strong>.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_fig54376817111459"><span class="figcap"><b>Figure 6 </b>Remote Login</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_image1668613445268" src="en-us_image_0000002141305390.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li56190747193213">(Optional) When the system displays "Press CTRL+ALT+DELETE to log on", click <strong id="EN-US_TOPIC_0093263550__b439763884">Send CtrlAltDel</strong> in the upper part of the remote login page to log in to the ECS.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0027290684_fig22996848191913"><span class="figcap"><b>Figure 7 </b>Send CtrlAltDel</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0027290684_image50805371191913" src="en-us_image_0201103161.png"></span></div>
</li><li id="EN-US_TOPIC_0093263550__li149651810480">(Optional) If you need your cursor to be displayed on the remote login page, click <strong id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_b1433582633116">Local Cursor</strong>.<div class="fignone" id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_fig3022163194924"><span class="figcap"><b>Figure 8 </b>Local Cursor</span><br><span><img id="EN-US_TOPIC_0093263550__en-us_topic_0093263550_en-us_topic_0027268511_en-us_topic_0036067988_image5640621116424" src="en-us_image_0093469181.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li58839855111459">Enter the ECS password as prompted.<ul id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_ul59796655111459"><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li1298990111459">When logging in to the ECS using VNC for the first time, use the English keyboard to enter the password. After you have logged in to the ECS, see <a href="#EN-US_TOPIC_0093263550__en-us_topic_0027268511_section66962382111459">Changing the OS Keyboard Language</a> to change the keyboard language of the ECS OS. You can then select the keyboard language and enter the password the next time you log in.</li><li id="EN-US_TOPIC_0093263550__en-us_topic_0027268511_li38109398111459">If you have changed the keyboard language of the ECS OS, ensure that the keyboard language in use, the keyboard language selected in step <a href="#EN-US_TOPIC_0093263550__en-us_topic_0027268511_li17715715111459">6</a>, and the changed OS keyboard language are all the same.</li></ul>
</li></ol>

10
docs/ecs/umn/en-us_topic_0093492520.html
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@ -12,7 +12,7 @@
<div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p9758192131619">The following OSs are used as examples here. For other OSs, see the help documentation on their official websites.<ul id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ul151051944111613"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li13105644131617">Linux: CentOS 8.2 64bit and Ubuntu 22.04 server 64bit</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li15251304178">Windows: Windows Server</li></ul>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0093492520__section163078152328"><h4 class="sectiontitle">CentOS</h4><div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p13342151612916">The following uses CentOS 8.2 64bit as an example.<ol id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ol202835571499"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916"></a><a name="en-us_topic_0118499077_li528316578916"></a>Obtain the network interface that the virtual IP address is to be bound and the connection of the network interface:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p1328312577914"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916"></a><a name="en-us_topic_0118499077_li528316578916"></a><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b26981410131211">nmcli connection</strong></p>
<div class="section" id="EN-US_TOPIC_0093492520__section163078152328"><h4 class="sectiontitle">CentOS</h4><div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p13342151612916">The following uses CentOS 8.2 64bit as an example.<ol id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ol202835571499"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916"></a><a name="en-us_topic_0118499077_li528316578916"></a>Obtain and take a note of the network interface that the virtual IP address is to be bound and the connection of the network interface:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p1328312577914"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916"></a><a name="en-us_topic_0118499077_li528316578916"></a><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b26981410131211">nmcli connection</strong></p>
<div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p186211116101">Information similar to the following is displayed:<pre class="screen" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_screen104274141068">[root@ecs-centos ~]# nmcli connection
NAME UUID TYPE DEVICE
System eth0 5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03 ethernet eth0
@ -25,7 +25,7 @@ System eth4 84d43311-57c8-8986-f205-9c78cd6ef5d2 ethernet -- </pre>
<ul id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ul19933103816107"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li6933113811010"><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b95791048193414">eth0</strong> in the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1988155093415">DEVICE</strong> column indicates the network interface that the virtual IP address is to be bound.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1641540181013"><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b2064068478">System eth0</strong> in the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1366091019351">NAME</strong> column indicates the connection of the network interface.</li></ul>
</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li20283257695"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li20283257695"></a><a name="en-us_topic_0118499077_li20283257695"></a>Add the virtual IP address for the connection:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p14283165714920"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li20283257695"></a><a name="en-us_topic_0118499077_li20283257695"></a><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b62831014273">nmcli connection modify "</strong><em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i15281910162716">connection-name-of-the-network-interface</em><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b428181018273">" </strong><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b172831052719">+</strong><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b12821012711">ipv4.addresses</strong> <em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i192911013272">virtual-IP-address</em></p>
<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p95398375268">Configure the parameters as follows:</p>
<ul id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ul9905446192614"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li19051046102614"><em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i158193582320">connection-name-of-the-network-interface</em>: The connection name of the network interface obtained in <a href="#EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916">1</a>. In this example, the connection name is <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b6676418477">System eth0</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li127558733710"><em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i147471550112619">virtual-IP-address</em>: Enter the virtual IP address to be added. If you add multiple virtual IP addresses at a time, separate every two with a comma (,).</li></ul>
<ul id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ul9905446192614"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li19051046102614"><em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i158193582320">connection-name-of-the-network-interface</em>: The connection name of the network interface obtained in <a href="#EN-US_TOPIC_0093492520__en-us_topic_0118499077_li528316578916">1</a>. In this example, the connection name is <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b6676418477">System eth0</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li127558733710"><em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i167961342182012">virtual-IP-address</em>: The virtual IP address to be added. If you add multiple virtual IP addresses at a time, separate every two with a comma (,).</li></ul>
<div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p15911658142818">Example commands:<ul id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ul10541171174810"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li254171114819">Adding a single virtual IP address: <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b823370581">nmcli connection modify "System eth0" +ipv4.addresses 192.168.0.22</strong></li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li19647011194810">Adding multiple virtual IP addresses: <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b41495597514">nmcli connection modify "System eth0" +ipv4.addresses 192.168.0.22,192.168.0.23</strong></li></ul>
</div>
</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li11209933188"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li11209933188"></a><a name="en-us_topic_0118499077_li11209933188"></a>Make the configuration in <a href="#EN-US_TOPIC_0093492520__en-us_topic_0118499077_li20283257695">2</a> take effect:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p6120163991310"><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b15418376265">nmcli connection up "</strong><em id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_i654143762610">connection-name-of-the-network-interface</em><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b125483722611">"</strong></p>
@ -61,7 +61,7 @@ Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkMa
</li></ol>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0093492520__section94511244164413"><h4 class="sectiontitle">Ubuntu</h4><div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p1510316597331">The following uses Ubuntu 22.04 server 64bit as an example. If the ECS runs <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1266511723620">Ubuntu 22</strong> or <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b7365164991019">Ubuntu 20</strong>, perform the following operations:<ol id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ol0718162344210"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1271842364218">Obtain the network interface that the virtual IP address is to be bound:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p371812233425"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1271842364218"></a><a name="en-us_topic_0118499077_li1271842364218"></a><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b14517204104620">ifconfig</strong></p>
<div class="section" id="EN-US_TOPIC_0093492520__section94511244164413"><h4 class="sectiontitle">Ubuntu</h4><div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p1510316597331">The following uses Ubuntu 22.04 server 64bit as an example. If the ECS runs <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1266511723620">Ubuntu 22</strong> or <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b7365164991019">Ubuntu 20</strong>, perform the following operations:<ol id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ol0718162344210"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1271842364218">Obtain and take a note of the network interface that the virtual IP address is to be bound:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p371812233425"><a name="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1271842364218"></a><a name="en-us_topic_0118499077_li1271842364218"></a><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b14517204104620">ifconfig</strong></p>
<div class="p" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p371822354215">Information similar to the following is displayed. In this example, the network interface with the virtual IP address bound is <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b79153223414">eth0</strong>.<pre class="screen" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_screen823116148462">root@ecs-X-Ubuntu:~# ifconfig
eth0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500
inet 172.16.0.210 netmask 255.255.255.0 broadcast 172.16.0.255
@ -119,9 +119,9 @@ eth0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt; mtu 1500
</div>
</div>
<div class="section" id="EN-US_TOPIC_0093492520__section1719312132464"><h4 class="sectiontitle">Windows Server</h4><p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p1810617331863">The following operations use Windows Server as an example.</p>
<ol id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ol52861227646"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li12285102720415">In <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b12768637114813">Control Panel</strong>, click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1358164294810">Network and Sharing Center</strong>, and click the corresponding local connection.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li11159627142715">On the displayed page, click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1086617306519">Properties</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li62856271241">On the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b84235270616019">Network</strong> tab page, select <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b84235270616329">Internet Protocol Version 4 (TCP/IPv4)</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li728511274412">Click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b842352706112032">Properties</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li20286127643">Select <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b145301522163917">Use the following IP address</strong> and set <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b253610221395">IP address</strong> to the private IP address of the ECS, for example, 10.0.0.101.<div class="fignone" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_fig18443195118132"><span class="figcap"><b>Figure 2 </b>Configuring private IP address</span><br><span><img id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_image205091623559" src="en-us_image_0000001179761510.png"></span></div>
<ol id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_ol52861227646"><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li12285102720415">In <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b12768637114813">Control Panel</strong>, click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1358164294810">Network and Sharing Center</strong>, and click the corresponding local connection.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li11159627142715">On the displayed page, click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b1086617306519">Properties</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li62856271241">On the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b84235270616019">Network</strong> tab page, select <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b84235270616329">Internet Protocol Version 4 (TCP/IPv4)</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li728511274412">Click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b842352706112032">Properties</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li20286127643">Select <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b145301522163917">Use the following IP address</strong> and set <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b253610221395">IP address</strong> to the private IP address of the ECS, for example, 10.0.0.101.<div class="fignone" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_fig18443195118132"><span class="figcap"><b>Figure 2 </b>Configuring a private IP address</span><br><span><img id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_image205091623559" src="en-us_image_0000001179761510.png"></span></div>
</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li728610271748">Click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b18855127202518">Advanced</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1628692711410">On the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b842352706185533">IP Settings</strong> tab, click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b842352706185558">Add</strong> in the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b84235270618564">IP addresses</strong> area.<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p1528620270419">Add the virtual IP address, for example, 10.0.0.154.</p>
<div class="fignone" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_fig9510105717158"><span class="figcap"><b>Figure 3 </b>Configuring virtual IP address</span><br><span><img id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_image10265690716" src="en-us_image_0000001225081545.png"></span></div>
<div class="fignone" id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_fig9510105717158"><span class="figcap"><b>Figure 3 </b>Configuring a virtual IP address</span><br><span><img id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_image10265690716" src="en-us_image_0000001225081545.png"></span></div>
</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li1754811918105">Click <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b842352706155930">OK</strong>.</li><li id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_li9285127445">In the <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b117114145467">Start</strong> menu, open the Windows command line window and run the following command to check whether the virtual IP address has been configured:<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p7284127744"><strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b42841427145">ipconfig /all</strong></p>
<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p528511274412">In the command output, <strong id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_b4679104134818">IPv4 Address</strong> is the virtual IP address 10.0.0.154, indicating that the virtual IP address of the ECS's network interface has been correctly configured.</p>
<p id="EN-US_TOPIC_0093492520__en-us_topic_0118499077_p456813144411"></p>

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<a name="EN-US_TOPIC_0094118976"></a><a name="EN-US_TOPIC_0094118976"></a>
<h1 class="topictitle1">Ultra-high I/O ECSs</h1>
<div id="body1516679385903"><div class="section" id="EN-US_TOPIC_0094118976__section58321715195020"><h4 class="sectiontitle">Overview</h4><p id="EN-US_TOPIC_0094118976__p1469618185016">Ultra-high I/O ECSs use high-performance local NVMe SSDs to provide high storage input/output operations per second (IOPS) and low read/write latency. You can create such ECSs with high-performance local NVMe SSDs attached on the management console.</p>
<div id="body1516679385903"><div class="section" id="EN-US_TOPIC_0094118976__section58321715195020"><h4 class="sectiontitle">Overview</h4><p id="EN-US_TOPIC_0094118976__p1469618185016">Ultra-high I/O ECSs use high-performance local NVMe SSDs to provide high storage input/output operations per second (IOPS) and low read/write latency. You can create such ECSs on the management console.</p>
</div>
<div class="section" id="EN-US_TOPIC_0094118976__section1764154423811"><h4 class="sectiontitle">Scenarios</h4><ul id="EN-US_TOPIC_0094118976__ul14184125003913"><li id="EN-US_TOPIC_0094118976__li16184950163912">High-performance relational databases</li><li id="EN-US_TOPIC_0094118976__li1918416509393">NoSQL databases (such as Cassandra and MongoDB) and ElasticSearch</li></ul>
</div>
@ -626,8 +626,8 @@
</table>
</div>
</li><li id="EN-US_TOPIC_0094118976__li16411373253">If the host where an ultra-high I/O ECS is deployed is faulty, the ECS cannot be restored through live migration.<ul id="EN-US_TOPIC_0094118976__ul14550172322517"><li id="EN-US_TOPIC_0094118976__li18942142152516">If the host is faulty or subhealthy, you need to stop the ECS for hardware repair.</li><li id="EN-US_TOPIC_0094118976__li11944122122512">In case of system maintenance or hardware faults, the ECS will be redeployed (to ensure HA) and cold migrated to another host. The local disk data of the ECS will not be retained.</li></ul>
</li><li id="EN-US_TOPIC_0094118976__li2549184113178">Ultra-high I/O ECSs do not support specifications change.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li14386295223843">Ultra-high I/O ECSs do not support local disk snapshots or backups.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li18838856223614">Ultra-high I/O ECSs can use local disks, and can also have EVS disks attached to provide a larger storage size. Note the following when using the two types of storage media:<ul id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_ul35331977223614"><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li49552340223614">Only an EVS disk, not a local disk, can be used as the system disk of an ultra-high I/O ECS.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li43317883223614">Both EVS disks and local disks can be used as data disks of an ultra-high I/O ECS.</li><li id="EN-US_TOPIC_0094118976__li1912894412312">An ultra-high I/O ECS can have a maximum of 60 attached disks (including VBD, SCSI, and local disks). For details about constraints, see <a href="en-us_topic_0018073215.html">Can I Attach Multiple Disks to an ECS?</a></li></ul>
</li><li id="EN-US_TOPIC_0094118976__li7909173042914">Modify the <strong id="EN-US_TOPIC_0094118976__b38401553202110">fstab</strong> file to set automatic disk mounting at ECS start. For details, see <a href="en-us_topic_0030831989.html">Initializing EVS Data Disks</a>.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li1717385122398">The local disk data of an ultra-high I/O ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application did not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.</li><li id="EN-US_TOPIC_0094118976__li6549174117179">When an ultra-high I/O ECS is deleted, the data on local NVMe SSDs will also be automatically deleted, which can take some time. As a result, an ultra-high I/O ECS takes a longer time than other ECSs to be deleted. Back up the data before deleting such an ECS.</li><li id="EN-US_TOPIC_0094118976__li175491741191710">The data reliability of local disks depends on the reliability of physical servers and hard disks, which are SPOF-prone. It is a good practice to use data redundancy mechanisms at the application layer to ensure data availability. Use EVS disks to store service data that needs to be stored for a long time.</li><li id="EN-US_TOPIC_0094118976__li7292749141819">The device name of a local disk attached to an ultra-high I/O ECS is <strong id="EN-US_TOPIC_0094118976__b5497105251714">/dev/nvme0n1</strong> or <strong id="EN-US_TOPIC_0094118976__b0503652101712">/dev/nvme0n2</strong>.</li><li id="EN-US_TOPIC_0094118976__li117233308228">The basic resources, including vCPUs, memory, and image of an ultra-high I/O ECS will continue to be billed after the ECS is stopped. To stop the ECS from being billed, delete it and its associated resources. </li></ul>
</li><li id="EN-US_TOPIC_0094118976__li2549184113178">Ultra-high I/O ECSs do not support specification modification.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li14386295223843">Ultra-high I/O ECSs do not support snapshots or backups of local disks.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li18838856223614">Ultra-high I/O ECSs can use local disks, and can also have EVS disks attached to provide a larger storage size. Note the following when using the two types of storage media:<ul id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_ul35331977223614"><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li49552340223614">Only an EVS disk, not a local disk, can be used as the system disk of an ultra-high I/O ECS.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li43317883223614">Both EVS disks and local disks can be used as data disks of an ultra-high I/O ECS.</li><li id="EN-US_TOPIC_0094118976__li1912894412312">An ultra-high I/O ECS can have a maximum of 60 attached disks (including VBD, SCSI, and local disks). For details about constraints, see <a href="en-us_topic_0018073215.html">Can I Attach Multiple Disks to an ECS?</a></li></ul>
</li><li id="EN-US_TOPIC_0094118976__li7909173042914">You can configure the <strong id="EN-US_TOPIC_0094118976__b38401553202110">fstab</strong> file to set automatic disk mounting at ECS startup. For details, see <a href="en-us_topic_0030831989.html">Initializing EVS Data Disks</a>.</li><li id="EN-US_TOPIC_0094118976__en-us_topic_0035470099_en-us_topic_0088142885_li1717385122398">The local disk data of an ultra-high I/O ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application did not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.</li><li id="EN-US_TOPIC_0094118976__li6549174117179">When an ultra-high I/O ECS is deleted, the data on local NVMe SSDs will also be automatically deleted. Back up data in advance. Deleting local disk data will increase the time needed to release resources compared with ECSs without local disks.</li><li id="EN-US_TOPIC_0094118976__li175491741191710">The reliability of local disk data depends on the reliability of physical servers and hard disks, which are SPOF-prone. It is a good practice to use data redundancy at the application layer to ensure data availability. Use EVS disks to store service data that needs to be stored for a long time.</li><li id="EN-US_TOPIC_0094118976__li7292749141819">The device name of a local disk attached to an ultra-high I/O ECS is <strong id="EN-US_TOPIC_0094118976__b5497105251714">/dev/nvme0n1</strong> or <strong id="EN-US_TOPIC_0094118976__b0503652101712">/dev/nvme0n2</strong>.</li><li id="EN-US_TOPIC_0094118976__li117233308228">The basic resources, including vCPUs, memory, and the image of an ultra-high I/O ECS will continue to be billed after the ECS is stopped. To stop the ECS from being billed, delete it and its associated resources. </li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0094118976__section121148461119"><h4 class="sectiontitle">Handling Damaged Local Disks Used by I-Series ECSs</h4><p id="EN-US_TOPIC_0094118976__p398664513218">If a local disk attached to an ECS is damaged, perform the following operations to handle this issue:</p>
<p id="EN-US_TOPIC_0094118976__p16492123493916"><strong id="EN-US_TOPIC_0094118976__b16804131412409">For a Linux ECS:</strong></p>

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<h1 class="topictitle1">What Can I Do If Switching from a Non-root User to User root Times Out?</h1>
<h1 class="topictitle1">What Can I Do If Switching from a Non-root User to a Root User Timed Out?</h1>
<div id="body1517049675996"><div class="section" id="EN-US_TOPIC_0094801708__section174441551144120"><h4 class="sectiontitle">Symptom</h4><p id="EN-US_TOPIC_0094801708__p13531853204114">When you run the <strong id="EN-US_TOPIC_0094801708__b842352706155457">sudo</strong> command to switch to user <strong id="EN-US_TOPIC_0094801708__b842352706155521">root</strong> on an Ubuntu or Debian ECS, the system prompts connection timeout.</p>
<div class="fignone" id="EN-US_TOPIC_0094801708__fig727412824411"><span class="figcap"><b>Figure 1 </b>Connection timeout</span><br><span><img id="EN-US_TOPIC_0094801708__image13274188144419" src="en-us_image_0094801740.png" title="Click to enlarge" class="imgResize"></span></div>
</div>
<div class="section" id="EN-US_TOPIC_0094801708__section1933384114410"><h4 class="sectiontitle">Solution</h4><ol id="EN-US_TOPIC_0094801708__ol895955294517"><li id="EN-US_TOPIC_0094801708__li6136142114615">Log in to the <span id="EN-US_TOPIC_0094801708__text24561712184311">ECS</span>.</li><li id="EN-US_TOPIC_0094801708__li53098502101927">Run the following command to edit the <strong id="EN-US_TOPIC_0094801708__b3452145214711">hosts</strong> configuration file:<p id="EN-US_TOPIC_0094801708__p13194383102015"><strong id="EN-US_TOPIC_0094801708__b54906486102018">vi /etc/hosts</strong></p>
</li><li id="EN-US_TOPIC_0094801708__li38588055102022">Press <strong id="EN-US_TOPIC_0094801708__b195123984714">i</strong> to enter insert mode.</li><li id="EN-US_TOPIC_0094801708__li56620583102034">Add the IP address and hostname to the last line of the hosts configuration file.<p id="EN-US_TOPIC_0094801708__p19475431102136"><a name="EN-US_TOPIC_0094801708__li56620583102034"></a><a name="li56620583102034"></a><em id="EN-US_TOPIC_0094801708__i842352697151839">Private IP address hostname</em></p>
<p id="EN-US_TOPIC_0094801708__p155944910222">An example is provided as follows:</p>
<p id="EN-US_TOPIC_0094801708__p5380579410224">If the ECS hostname is <strong id="EN-US_TOPIC_0094801708__b842352706164923">hostname</strong> and the private IP address of the ECS is <strong id="EN-US_TOPIC_0094801708__b2033595111504">192.168.0.1</strong>, add the following statement:</p>
<p id="EN-US_TOPIC_0094801708__p5380579410224">If the ECS hostname is <strong id="EN-US_TOPIC_0094801708__b842352706164923">hostname</strong> and the private IP address of the ECS is <strong id="EN-US_TOPIC_0094801708__b2033595111504">192.168.0.1</strong>, add the following:</p>
<p id="EN-US_TOPIC_0094801708__p24320870102533">192.168.0.1 hostname</p>
</li><li id="EN-US_TOPIC_0094801708__li5695172510266">Press <strong id="EN-US_TOPIC_0094801708__b28803554191533">Esc</strong> to exit editing mode.</li><li id="EN-US_TOPIC_0094801708__li64061240102622">Run the following command to save the configuration and exit:<p id="EN-US_TOPIC_0094801708__p38578715102646"><a name="EN-US_TOPIC_0094801708__li64061240102622"></a><a name="li64061240102622"></a><strong id="EN-US_TOPIC_0094801708__b12549253102648">:wq</strong></p>
</li></ol>

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<div>
<ul class="ullinks">
<li class="ulchildlink"><strong><a href="en-us_topic_0094801708.html">What Can I Do If Switching from a Non-root User to User root Times Out?</a></strong><br>
<li class="ulchildlink"><strong><a href="en-us_topic_0094801708.html">What Can I Do If Switching from a Non-root User to a Root User Timed Out?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0107412162.html">What Should I Do If Error "command &acute;gcc&acute; failed with exit status 1" Occurs During PIP-based Software Installation?</a></strong><br>
</li>

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<div class="section" id="EN-US_TOPIC_0096293655__section188614152411"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0096293655__ol5143115983115"><li id="EN-US_TOPIC_0096293655__li1151341720102">Log in to the management console.</li><li id="EN-US_TOPIC_0096293655__li464234814566">Click <span><img id="EN-US_TOPIC_0096293655__en-us_topic_0000001825604541_image9499446838" src="en-us_image_0000002188678994.png"></span> in the upper left corner and select a region and project.</li><li id="EN-US_TOPIC_0096293655__li1514345963117">Under <strong id="EN-US_TOPIC_0096293655__b166412471056"><span id="EN-US_TOPIC_0096293655__text8640471555">Computing</span></strong>, click <strong id="EN-US_TOPIC_0096293655__b186517471950">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0096293655__li17143459143113">In the search box above the <span id="EN-US_TOPIC_0096293655__text570533014396">ECS</span> list, enter the <span id="EN-US_TOPIC_0096293655__text15990111018551">ECS</span> name, IP address, or ID for search.</li><li id="EN-US_TOPIC_0096293655__li4144155920313">Click the name of the target <span id="EN-US_TOPIC_0096293655__text657784293913">ECS</span>.<p id="EN-US_TOPIC_0096293655__p18144205916319">The <span id="EN-US_TOPIC_0096293655__text2293724185518">ECS</span> details page is displayed.</p>
</li><li id="EN-US_TOPIC_0096293655__li1114425923112">Click the <strong id="EN-US_TOPIC_0096293655__b3166031238574">Disks</strong> tab. Then, click <strong id="EN-US_TOPIC_0096293655__b62538178185745">Attach Disk</strong>.<p id="EN-US_TOPIC_0096293655__p3144159153115">The <strong id="EN-US_TOPIC_0096293655__b84235270622427">Attach Disk</strong> dialog box is displayed.</p>
<div class="fignone" id="EN-US_TOPIC_0096293655__fig1332144315348"><span class="figcap"><b>Figure 1 </b>Attach Disk</span><br><span><img id="EN-US_TOPIC_0096293655__image7303181915103" src="en-us_image_0000002351494384.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0096293655__li19144105919315">Select the target disk and specify the disk as the system disk or data disk<div class="note" id="EN-US_TOPIC_0096293655__note105791934312"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0096293655__ul1557913920439"><li id="EN-US_TOPIC_0096293655__li105793912435">If no EVS disks are available, click <strong id="EN-US_TOPIC_0096293655__b1977105033">Create Disk</strong> in the lower part of the list.</li><li id="EN-US_TOPIC_0096293655__li85798934317">For details about constraints on attaching disks, see <a href="en-us_topic_0040863659.html">What Are the Requirements for Attaching an EVS Disk to an ECS?</a></li><li id="EN-US_TOPIC_0096293655__li057959184316">The device names for the local disks and EVS disks attached to a disk-intensive ECS comply with the following rules:<ul id="EN-US_TOPIC_0096293655__ul357969164315"><li id="EN-US_TOPIC_0096293655__li1357989174314">System disk: Use sda or vda.</li><li id="EN-US_TOPIC_0096293655__li155793934315">Local disk: Use the device name following sda or vda in alphabetical order.</li><li id="EN-US_TOPIC_0096293655__li10579179194315">EVS disk: Use the device name added in alphabetical order following those used by local disks.</li></ul>
</li><li id="EN-US_TOPIC_0096293655__li19144105919315">Select the target disk and specify the disk as the system disk or data disk.<div class="note" id="EN-US_TOPIC_0096293655__note105791934312"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0096293655__ul1557913920439"><li id="EN-US_TOPIC_0096293655__li105793912435">If no EVS disks are available, click <strong id="EN-US_TOPIC_0096293655__b1932368999">Create Disk</strong> in the lower part of the list.</li><li id="EN-US_TOPIC_0096293655__li85798934317">For details about constraints on attaching disks, see <a href="en-us_topic_0040863659.html">What Are the Requirements for Attaching an EVS Disk to an ECS?</a></li><li id="EN-US_TOPIC_0096293655__li057959184316">The device names for the local disks and EVS disks attached to a disk-intensive ECS comply with the following rules:<ul id="EN-US_TOPIC_0096293655__ul357969164315"><li id="EN-US_TOPIC_0096293655__li1357989174314">System disk: Use sda or vda.</li><li id="EN-US_TOPIC_0096293655__li155793934315">Local disk: Use the device name following sda or vda in alphabetical order.</li><li id="EN-US_TOPIC_0096293655__li10579179194315">EVS disk: Use the device name added in alphabetical order following those used by local disks.</li></ul>
</li></ul>
</div></div>
</li><li id="EN-US_TOPIC_0096293655__li378881832719">Click <strong id="EN-US_TOPIC_0096293655__b84235270611586">OK</strong>.<p id="EN-US_TOPIC_0096293655__p27881518102716">After the disk is attached, you can view the information about it on the <strong id="EN-US_TOPIC_0096293655__b84235270694114">Disks</strong> tab.</p>
<div class="fignone" id="EN-US_TOPIC_0096293655__fig18788918132718"><span class="figcap"><b>Figure 2 </b>Viewing the newly attached disk</span><br><span><img id="EN-US_TOPIC_0096293655__image9389214132" src="en-us_image_0000002351656348.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0096293655__section76311616163518"><h4 class="sectiontitle">Follow-up Procedure</h4><p id="EN-US_TOPIC_0096293655__p2977174934812">If the attached disk is newly created, the disk can be used only after it is initialized.</p>
<div class="section" id="EN-US_TOPIC_0096293655__section76311616163518"><h4 class="sectiontitle">Follow-up Procedure</h4><p id="EN-US_TOPIC_0096293655__p2977174934812">If the attached disk is newly created, the disk cannot be used until it is initialized.</p>
<p id="EN-US_TOPIC_0096293655__p1114119113519">For details about how to initialize a data disk, see <a href="en-us_topic_0030831623.html">Scenarios and Disk Partitions</a>.</p>
</div>
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<h1 class="topictitle1">How Long Does It Take to Reinstall an ECS OS?</h1>
<div id="body8662426"><p id="EN-US_TOPIC_0101604512__en-us_topic_0097083099_p395565124110">Generally, the process of reinstalling the OS of an ECS takes about 1 to 2 minutes to complete. On the ECS console, stop the ECS and choose <strong id="EN-US_TOPIC_0101604512__b14244312201915">More</strong> &gt; <strong id="EN-US_TOPIC_0101604512__b6244111210197">Manage Image/Backup</strong> &gt; <strong id="EN-US_TOPIC_0101604512__b18244012101915">Reinstall OS</strong> in the <strong id="EN-US_TOPIC_0101604512__b1424591218190">Operation</strong> column.</p>
<p id="EN-US_TOPIC_0101604512__en-us_topic_0097083099_p1578143320225">During this process, the <span id="EN-US_TOPIC_0101604512__text15797113144311">ECS</span> is in <strong id="EN-US_TOPIC_0101604512__b842352706222037">Reinstalling OS</strong> state.</p>
<div class="fignone" id="EN-US_TOPIC_0101604512__fig82691044195116"><span class="figcap"><b>Figure 1 </b>Reinstalling an OS</span><br><span><img id="EN-US_TOPIC_0101604512__en-us_topic_0024911405_image9153135512403" src="en-us_image_0000002351471046.png" title="Click to enlarge" class="imgResize"></span></div>
<p id="EN-US_TOPIC_0101604512__en-us_topic_0097083099_p8060118"></p>
<div class="fignone" id="EN-US_TOPIC_0101604512__fig82691044195116"><span class="figcap"><b>Figure 1 </b>Reinstalling an OS</span><br><span><img id="EN-US_TOPIC_0101604512__en-us_topic_0024911405_image131496356577" src="en-us_image_0000002524673400.png" title="Click to enlarge" class="imgResize"></span></div>
</div>
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<h1 class="topictitle1">Viewing Traces</h1>
<div id="body1528450810042"><div class="section" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_section5470822195238"><h4 class="sectiontitle">Scenarios</h4><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p5235541767">Cloud Trace Service (CTS) records operations performed on cloud service resources. A record contains information such as the user who performed the operation, IP address, operation content, and returned response message. These records facilitate security auditing, issue tracking, and resource locating. They also help you plan and use resources, and identify high-risk or non-compliant operations.</p>
<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p5961487316">This section describes how to query or export operation records of the last seven days on the CTS console.</p>
</div>
<div class="section" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_section036851413573"><h4 class="sectiontitle">What Is a Trace?</h4><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p7344192412579">A trace is an operation log for a cloud service resource, tracked and stored by CTS. Traces record operations such as adding, modifying, or deleting cloud service resources. You can view them to identify who performed operations and when for detailed tracking.</p>
</div>
<div class="section" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_section19271975203"><h4 class="sectiontitle">Viewing Traces in the Trace List</h4><ol id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_ol143115612115"><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1629194722218"><span>Log in to the management console, click <span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image1229124714224" src="en-us_image_0000002359774578.png" title="Click to enlarge" class="imgResize"></span> in the upper left corner, and choose <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b0101171161313">Management &amp; Deployment</strong> &gt; <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b17101511131310">Cloud Trace Service</strong>.</span></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1443115692119"><span>In the navigation pane, choose <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b5352121921314">Trace List</strong>.</span></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1468123811239"><span>In the upper right corner of the page, set a desired query time range: <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b192893416490">Last 1 hour</strong>, <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b122899464911">Last 1 day</strong>, or <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b19289147490">Last 1 week</strong>. You can also click <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b328913414912">Customize</strong> to specify a custom time range within the last seven days.</span></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li243155612119"><span>Set filters to search for your desired traces, as shown in <a href="#EN-US_TOPIC_0116266207__en-us_topic_0179639644_fig139361441134311">Figure 1</a>.</span><p><div class="fignone" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_fig139361441134311"><a name="EN-US_TOPIC_0116266207__en-us_topic_0179639644_fig139361441134311"></a><a name="en-us_topic_0179639644_fig139361441134311"></a><span class="figcap"><b>Figure 1 </b>Filters</span><br><span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image14936144112433" src="en-us_image_0000001744598325.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="section" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_section19271975203"><h4 class="sectiontitle">Viewing Traces in the Trace List</h4><ol id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_ol143115612115"><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1629194722218"><span>Log in to the management console, click <span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image1229124714224" src="en-us_image_0000002359774578.png" title="Click to enlarge" class="imgResize"></span> in the upper left corner, and choose <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b0101171161313">Management &amp; Deployment</strong> &gt; <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b17101511131310">Cloud Trace Service</strong>.</span></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1443115692119"><span>In the navigation pane, choose <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b5352121921314">Trace List</strong>.</span></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1468123811239"><span>In the upper right corner of the page, select a desired query time range: <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b97183311212">Last 1 hour</strong>, <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b17712033131211">Last 1 day</strong>, or <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b12717337121">Last 1 week</strong>. You can also specify a custom time range within the last seven days.</span></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li243155612119"><span>Set filters to search for your desired traces, as shown in <a href="#EN-US_TOPIC_0116266207__en-us_topic_0179639644_fig139361441134311">Figure 1</a>.</span><p><div class="fignone" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_fig139361441134311"><a name="EN-US_TOPIC_0116266207__en-us_topic_0179639644_fig139361441134311"></a><a name="en-us_topic_0179639644_fig139361441134311"></a><span class="figcap"><b>Figure 1 </b>Filters</span><br><span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image14936144112433" src="en-us_image_0000001744598325.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_table147746583014" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Trace filtering parameters</caption><thead align="left"><tr id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_row1877510573019"><th align="left" class="cellrowborder" valign="top" width="18.95%" id="mcps1.3.3.2.4.2.2.2.3.1.1"><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1877512593016">Parameter</p>
</th>
@ -27,14 +28,14 @@
<tr id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_row531111429400"><td class="cellrowborder" valign="top" width="18.95%" headers="mcps1.3.3.2.4.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p167757553018">Resource type</p>
</td>
<td class="cellrowborder" valign="top" width="81.05%" headers="mcps1.3.3.2.4.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1677513515307">Select the type of the resource involved in a trace from the drop-down list.</p>
<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1077535173016">For details about the resource types of each cloud service, see section "Supported Services and Operations" in the <em id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_i1090794613497">Cloud Trace Service User Guide</em>.</p>
<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1077535173016">For details about the resource types of each cloud service, see "Supported Services and Operations" in <em id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_i8304152131410">CTS User Guide</em>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_row17951953163817"><td class="cellrowborder" valign="top" width="18.95%" headers="mcps1.3.3.2.4.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p17951145393815">Search By</p>
</td>
<td class="cellrowborder" valign="top" width="81.05%" headers="mcps1.3.3.2.4.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1866016362423">Select one of the following options:</p>
<ul id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_ul8324201518432"><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li1332441519434"><strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b17755195192214">Resource ID</strong>: ID of the cloud resource involved in a trace.<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p927319140446">Leave this field empty if the resource has no resource ID or if resource creation failed.</p>
</li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li19324111594319"><strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b20740051162314">Trace name</strong>: name of a trace.<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p162131756164314">For details about the operations that can be audited for each cloud service, see section "Supported Services and Operations" in the <em id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_i185782113507">Cloud Trace Service User Guide</em>.</p>
</li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li19324111594319"><strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b20740051162314">Trace name</strong>: name of a trace.<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p162131756164314">For details about the operations that can be audited for each cloud service, see "Supported Services and Operations" in <em id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_i1559831121510">CTS User Guide</em>.</p>
</li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li53251315144311"><strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b113836152512">Resource name</strong>: name of the cloud resource involved in a trace.<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p546964974419">If the cloud resource involved in the trace does not have a resource name or the corresponding API operation does not involve the resource name parameter, leave this field empty.</p>
</li></ul>
</td>
@ -59,7 +60,7 @@
</p></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li15432145622119"><span>Click <span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image9947176447" src="en-us_image_0000001744678489.jpg" title="Click to enlarge" class="imgResize"></span> on the left of a trace to expand its details.</span><p><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1294101714446"></p>
<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1694171715446"><span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image1767234653119" src="en-us_image_0000001942942816.png" title="Click to enlarge" class="imgResize"></span></p>
<p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p145491156142711"></p>
</p></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li143245616217"><span>Click <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b139145611337">View Trace</strong> in the <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b1591756103313">Operation</strong> column. The trace details are displayed.</span><p><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1695161714447"><span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image1990505483515" src="en-us_image_0000001758618249.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li143245616217"><span>Click <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b139145611337">View Trace</strong> in the <strong id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_b1591756103313">Operation</strong> column. The trace details are displayed.</span><p><p id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_p1695161714447"><span><img id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_image1904172011220" src="en-us_image_0000001758618249.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_section18501734161612"><h4 class="sectiontitle">Helpful Links</h4><ul id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_ul19442019172"><li id="EN-US_TOPIC_0116266207__en-us_topic_0179639644_li547715311275">For details about the key fields in the trace structure, see <a href="https://docs.otc.t-systems.com/cloud-trace-service/umn/user_guide/trace_references/trace_structure.html#cts-03-0010" target="_blank" rel="noopener noreferrer">Trace Structure</a> and <a href="https://docs.otc.t-systems.com/cloud-trace-service/umn/user_guide/trace_references/example_traces.html" target="_blank" rel="noopener noreferrer">Example Traces</a>.</li></ul>

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<ul class="ullinks">
<li class="ulchildlink"><strong><a href="en-us_topic_0140323157.html">Overview</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0140323154.html">Default Security Groups and Rules</a></strong><br>
<li class="ulchildlink"><strong><a href="en-us_topic_0140323154.html">Default Security Group and Rules</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="en-us_topic_0140323152.html">Security Group Configuration Examples</a></strong><br>
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</thead>
<tbody><tr id="EN-US_TOPIC_0140323152__en-us_topic_0118534011_row17226899214"><td class="cellrowborder" valign="top" width="20.535254760679365%" headers="mcps1.3.3.3.2.2.2.5.1.1 "><p id="EN-US_TOPIC_0140323152__en-us_topic_0118534011_p622669629">Inbound</p>
</td>
<td class="cellrowborder" valign="top" width="16.46937725167267%" headers="mcps1.3.3.3.2.2.2.5.1.2 "><p id="EN-US_TOPIC_0140323152__en-us_topic_0118534011_p165787211427">IPv4</p>
<td class="cellrowborder" valign="top" width="16.46937725167267%" headers="mcps1.3.3.3.2.2.2.5.1.2 "><p id="EN-US_TOPIC_0140323152__en-us_topic_0118534011_p165787211427"><strong id="EN-US_TOPIC_0140323152__en-us_topic_0118534011_b176751021151814">IPv4</strong></p>
</td>
<td class="cellrowborder" valign="top" width="21.937725167267118%" headers="mcps1.3.3.3.2.2.2.5.1.3 "><p id="EN-US_TOPIC_0140323152__en-us_topic_0118534011_p122261091026">TCP: 22</p>
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<a name="EN-US_TOPIC_0140323154"></a><a name="EN-US_TOPIC_0140323154"></a>
<h1 class="topictitle1">Default Security Groups and Rules</h1>
<h1 class="topictitle1">Default Security Group and Rules</h1>
<div id="body8662426"><div class="section" id="EN-US_TOPIC_0140323154__section1347242165817"><h4 class="sectiontitle">Default Security Group Rules</h4><div class="p" id="EN-US_TOPIC_0140323154__p9223113110710">Note the following when using default security group rules:<ul id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_ul13643173351019"><li id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_li164313371013"><strong id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_b42242031134713">Inbound rules</strong> control incoming traffic to instances in the default security group. The instances can communicate with each other but cannot be accessed from external networks.</li><li id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_li176437339108"><strong id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_b45820924820">Outbound rules</strong> allow all traffic from the instances in the default security group to external networks.</li></ul>
</div>
<p id="EN-US_TOPIC_0140323154__p1480513558383"><a href="#EN-US_TOPIC_0140323154__fig11890174421819">Figure 1</a> shows the default security group.</p>
@ -11,7 +11,7 @@
</th>
<th align="left" class="cellrowborder" valign="top" width="11.97%" id="mcps1.3.1.6.2.6.1.2"><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p129301851131913">Protocol</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.1.6.2.6.1.3"><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p093075141919">Port/Range</p>
<th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.1.6.2.6.1.3"><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p093075141919">Port</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="25.22%" id="mcps1.3.1.6.2.6.1.4"><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p149306511191">Source/Destination</p>
</th>
@ -38,7 +38,7 @@
</td>
<td class="cellrowborder" valign="top" width="25.22%" headers="mcps1.3.1.6.2.6.1.4 "><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p593115141917">Source: the current security group (for example, sg-<em id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_i2138146127154428">xxxxx</em>)</p>
</td>
<td class="cellrowborder" valign="top" width="35.980000000000004%" headers="mcps1.3.1.6.2.6.1.5 "><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p2931151121912">Allows communications among ECSs within the security group and denies all inbound traffic (incoming data packets).</p>
<td class="cellrowborder" valign="top" width="35.980000000000004%" headers="mcps1.3.1.6.2.6.1.5 "><p id="EN-US_TOPIC_0140323154__en-us_topic_0118534003_p2931151121912">Allows communications among cloud servers within the security group and denies all inbound traffic.</p>
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<h1 class="topictitle1">Overview</h1>
<div id="body8662426"><div class="section" id="EN-US_TOPIC_0140323157__section14990143614615"><h4 class="sectiontitle">Security Group</h4><p id="EN-US_TOPIC_0140323157__p1868655417918">A security group is a collection of access control rules for <span id="EN-US_TOPIC_0140323157__text14577195853012">ECS</span>s that have the same security protection requirements and that are mutually trusted. After a security group is created, you can create various access rules for the security group, these rules will apply to all <span id="EN-US_TOPIC_0140323157__text192721320183720">ECS</span>s added to this security group.</p>
<p id="EN-US_TOPIC_0140323157__p1388113065018">You can also customize a security group or use the default one. The system provides a default security group for you, which permits all outbound traffic and denies inbound traffic. <span id="EN-US_TOPIC_0140323157__text116501535133718">ECS</span>s in a security group are accessible to each other. For details about the default security group, see <a href="en-us_topic_0140323154.html">Default Security Groups and Rules</a>.</p>
<p id="EN-US_TOPIC_0140323157__p1388113065018">You can also customize a security group or use the default one. The system provides a default security group for you, which permits all outbound traffic and denies inbound traffic. <span id="EN-US_TOPIC_0140323157__text116501535133718">ECS</span>s in a security group are accessible to each other. For details about the default security group, see <a href="en-us_topic_0140323154.html">Default Security Group and Rules</a>.</p>
<div class="note" id="EN-US_TOPIC_0140323157__note45101592548"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0140323157__ul127191453135316"><li id="EN-US_TOPIC_0140323157__li157201853205315">A security group works only when the network communication is normal. If two ECSs are in the same security group but in different VPCs, the security group does not take effect. You can use a VPC peering connection to connect the two VPCs first. </li></ul>
</div></div>
</div>
<div class="section" id="EN-US_TOPIC_0140323157__section1293516499168"><h4 class="sectiontitle">Security Group Rules</h4><p id="EN-US_TOPIC_0140323157__p2422159114619">After a security group is created, you can add rules to the security group. A rule applies either to inbound traffic (ingress) or outbound traffic (egress). After <span id="EN-US_TOPIC_0140323157__text17342815311">ECS</span>s are added to the security group, they are protected by the rules of that group. </p>
<p id="EN-US_TOPIC_0140323157__p4631010194416">Each security group has default rules. For details, see <a href="en-us_topic_0140323154.html">Default Security Groups and Rules</a>. You can also customize security group rules. For details, see <a href="en-us_topic_0030878383.html">Configuring Security Group Rules</a>.</p>
<p id="EN-US_TOPIC_0140323157__p4631010194416">Each security group has default rules. For details, see <a href="en-us_topic_0140323154.html">Default Security Group and Rules</a>. You can also customize security group rules. For details, see <a href="en-us_topic_0030878383.html">Configuring Security Group Rules</a>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0140323157__section1795142593815"><h4 class="sectiontitle">Constraints on Using Security Groups</h4><ul id="EN-US_TOPIC_0140323157__en-us_topic_0118534002_ul1481432183915"><li id="EN-US_TOPIC_0140323157__en-us_topic_0118534002_li12289813111010">By default, you can add up to 50 security group rules to a security group.</li></ul>
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@ -61,7 +61,7 @@
</li></ul>
</p></li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li2024825592115"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li2024825592115"></a><a name="en-us_topic_0129883696_li2024825592115"></a><span>Enable dynamic IPv6 address assignment.</span><p><ol type="a" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol169514942211"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li4796132252211">Choose <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1908704507113729">Start</strong> &gt; <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1106493776113729">Control Panel</strong>.</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li379619224228">Click <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b939273691113729">Network and Sharing Center</strong>.</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li1796192232219">Click the Ethernet connection.<div class="fignone" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_fig48126812315"><span class="figcap"><b>Figure 4 </b>Ethernet connection</span><br><span><img id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_image10813198122318" src="en-us_image_0000001771292121.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li2561114116236">In the <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b103893216334">Ethernet Status</strong> dialog box, click <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b13797434103319">Properties</strong> in the lower left corner.</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li10313134192417">Select <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1941812522113729">Internet Protocol Version 6 (TCP/IPv6)</strong> and click <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1946477113729">OK</strong>.<div class="fignone" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_fig875054216245"><span class="figcap"><b>Figure 5 </b>Configuring dynamic IPv6 address assignment</span><br><span><img id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_image17750742122416" src="en-us_image_0000001723651658.png"></span></div>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li29352972513">Perform step <a href="#EN-US_TOPIC_0140963099__en-us_topic_0129883696_li64771254152011">1</a> to check whether dynamic IPv6 address assignment is enabled.</li></ol>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li29352972513">Perform <a href="#EN-US_TOPIC_0140963099__en-us_topic_0129883696_li64771254152011">1</a> to check whether dynamic IPv6 address assignment is enabled.</li></ol>
</p></li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li35521349132511"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li35521349132511"></a><a name="en-us_topic_0129883696_li35521349132511"></a><span>Enable and configure IPv6.</span><p><ol type="a" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol82691418122612"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li326919189266">In the <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b12481341173517">Internet Protocol Version 6 (TCP/IPv6) Properties</strong> dialog box, configure an IPv6 address and a DNS server address.<ul id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ul1270161819268"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li18270131842610"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b61713355367">IPv6 address</strong>: IPv6 address allocated during ECS creation. Obtain the value from the ECS list on the console.</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li122701418172619"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b11268129113711">Subnet prefix length</strong>: <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b12663193212149">64</strong></li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li183911131192620"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b11598180191516">Preferred DNS server</strong>: <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b18544171181511">240c::6666</strong> (recommended)</li></ul>
<div class="fignone" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_fig5267143722717"><span class="figcap"><b>Figure 6 </b>Configuring an IPv6 address and a DNS server address</span><br><span><img id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_image1026763742715" src="en-us_image_0000001723492306.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li135153212818">(Optional) Run the following command depending on your ECS OS.<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p135153212813"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li135153212818"></a><a name="en-us_topic_0129883696_li135153212818"></a>For Windows Server 2012, run the following command in PowerShell or CMD:</p>
@ -109,7 +109,7 @@
</p></li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li615511220439"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li615511220439"></a><a name="en-us_topic_0129883696_li615511220439"></a><span>Enable IPv6 for the ECS.</span><p><ol type="a" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol14994893916"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li11992813395">Run the following command to check whether IPv6 is enabled for the kernel:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p14355731113918"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li11992813395"></a><a name="en-us_topic_0129883696_li11992813395"></a><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b89771818114320">sysctl -a | grep ipv6</strong></p>
<ul id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ul163471252104019"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li715713543409">If a command output is displayed, IPv6 is enabled.</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li103471652204014">If no information is displayed, IPv6 is disabled. Go to <a href="#EN-US_TOPIC_0140963099__en-us_topic_0129883696_li193875248395">2.b</a> to load the IPv6 module.</li></ul>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li193875248395"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li193875248395"></a><a name="en-us_topic_0129883696_li193875248395"></a>Run the following command to load the IPv6 module:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p1324817575428"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li193875248395"></a><a name="en-us_topic_0129883696_li193875248395"></a><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b188615248431">modprobe ipv6</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li1470132343917">Add the following content to the <strong id="EN-US_TOPIC_0140963099__b2051457264">/etc/sysctl.conf</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p179151816436"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1281730174313">net.ipv6.conf.all.disable_ipv6=0</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li1470132343917">Add the following content to the <strong id="EN-US_TOPIC_0140963099__b1586130190">/etc/sysctl.conf</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p179151816436"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1281730174313">net.ipv6.conf.all.disable_ipv6=0</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li27518229393">Save the configuration and exit. Then, run the following command to load the configuration:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p117092119439"><a name="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li27518229393"></a><a name="en-us_topic_0129883696_li27518229393"></a><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b8287434184320">sysctl -p</strong></p>
</li></ol>
</p></li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li732702252514"><span>Enable dynamic IPv6 address assignment for the ECS.</span><p><ul id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ul168021435112516"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li64311356152">Ubuntu 18.04/20.04<ol type="a" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol143111351155"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li719711710174">Run the following command to access <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b196182209539">/etc/netplan/</strong>:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p9342192771719"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1977131131819">cd /etc/netplan</strong></p>
@ -195,15 +195,15 @@ DHCPV6C=yes</pre>
<ul id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ul15881151616011"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li2088110161020">CentOS 6.<em id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_i959817122058">x</em>:<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol51981660410"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li29287380818">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_en-us_topic_0029124569_b4949258417571">dhclient.conf</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p1839771699"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b68271759885">vi /etc/dhcp/dhclient.conf</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li16198463414">Press <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b362010249514">i</strong> to enter editing mode and add the timeout attribute to the file.<pre class="screen" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_screen3345125478">timeout 30;</pre>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li5198061049">Enter <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b842352706154629">:wq</strong> to save the settings and exit.</li></ol>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li167681631604">Debian 7.5:<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol81697117102"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li191691211181011">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__b2117812748">networking</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p18793537097"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1279413715912">vi /etc/init.d/networking</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li167681631604">Debian 7.5:<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol81697117102"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li191691211181011">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__b1278519068">networking</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p18793537097"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b1279413715912">vi /etc/init.d/networking</strong></p>
</li></ol><ol start="2" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol589431271017"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li1189418123107">Press <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b84235270616158">i</strong> to enter editing mode and add the timeout attribute.<div class="fignone" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_fig754774645719"><span class="figcap"><b>Figure 20 </b>Modification 1</span><br><span><img id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_image4547174615710" src="en-us_image_0000001723492326.png" title="Click to enlarge" class="imgResize"></span></div>
<div class="fignone" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_fig14593974597"><span class="figcap"><b>Figure 21 </b>Modification 2</span><br><span><img id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_image6593137195918" src="en-us_image_0000001771211517.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li72971749308">Debian 8.2.0/8.8.0<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol1673185320103"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li51561857171017">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__b505329340">network-pre.conf</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p1158165712108"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b916015577105">vi <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b12865142712116">/lib/systemd/system/networking.service.d/network-pre.conf</strong></strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li72971749308">Debian 8.2.0/8.8.0<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol1673185320103"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li51561857171017">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__b482774736">network-pre.conf</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p1158165712108"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b916015577105">vi <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b12865142712116">/lib/systemd/system/networking.service.d/network-pre.conf</strong></strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li111615573106">Press <em id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_i84235269715467">i</em> to enter editing mode and add the timeout attribute to the file.<pre class="screen" id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_screen5164155731011">[Service]
TimeoutStartSec=30</pre>
</li></ol>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li746771616117">Debian 9.0<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol167421735171215"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li174713352125">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__b1559223289">networking.service</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p175113517123"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b157537354128">vi /etc/system/system/network-online.target.wants/networking.service</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li746771616117">Debian 9.0<ol id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_ol167421735171215"><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li174713352125">Run the following command to edit the <strong id="EN-US_TOPIC_0140963099__b1044597351">networking.service</strong> file:<p id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_p175113517123"><strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b157537354128">vi /etc/system/system/network-online.target.wants/networking.service</strong></p>
</li><li id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_li11756103519125">Press <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b842352706155556">i</strong> to enter editing mode and change <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b842352706155640">TimeoutStartSec=5min</strong> to <strong id="EN-US_TOPIC_0140963099__en-us_topic_0129883696_b842352706155644">TimeoutStartSec=30</strong>.</li></ol>
</li></ul>
</div>

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@ -21,8 +21,8 @@
</li><li id="EN-US_TOPIC_0149470468__li58171057133914">CentOS<p id="EN-US_TOPIC_0149470468__p138171157153911"><a name="EN-US_TOPIC_0149470468__li58171057133914"></a><a name="li58171057133914"></a>Update the software installation source: <strong id="EN-US_TOPIC_0149470468__b74423133210377">yum -y update --exclude=kernel* --exclude=centos-release* --exclude=initscripts*</strong></p>
<p id="EN-US_TOPIC_0149470468__p1844012187318">Install the desired program: <strong id="EN-US_TOPIC_0149470468__b1613125310111">yum install -y kernel-devel-`uname -r` gcc gcc-c++</strong></p>
</li></ul>
</li><li id="EN-US_TOPIC_0149470468__li4817457193917">Download the NVIDIA driver package.<p id="EN-US_TOPIC_0149470468__p138171157123914"><a name="EN-US_TOPIC_0149470468__li4817457193917"></a><a name="li4817457193917"></a>Select a driver at <a href="https://www.nvidia.com/Download/index.aspx?lang=en-us" target="_blank" rel="noopener noreferrer">NVIDIA Driver Downloads</a> based on the ECS type.</p>
<div class="fignone" id="EN-US_TOPIC_0149470468__fig545554125711"><span class="figcap"><b>Figure 1 </b>Selecting the NVIDIA driver</span><br><span><img id="EN-US_TOPIC_0149470468__image796402331" src="en-us_image_0000002114600494.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0149470468__li4817457193917">Download the NVIDIA driver package.<p id="EN-US_TOPIC_0149470468__p138171157123914"><a name="EN-US_TOPIC_0149470468__li4817457193917"></a><a name="li4817457193917"></a>Download a driver from <a href="https://www.nvidia.com/Download/index.aspx?lang=en-us" target="_blank" rel="noopener noreferrer">NVIDIA Drivers</a> based on the ECS type.</p>
<div class="fignone" id="EN-US_TOPIC_0149470468__fig545554125711"><span class="figcap"><b>Figure 1 </b>Manual driver search</span><br><span><img id="EN-US_TOPIC_0149470468__image796402331" src="en-us_image_0000002114600494.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0149470468__li11742044142716">Select a driver version as required. The following uses Tesla 418.67 as an example.<div class="fignone" id="EN-US_TOPIC_0149470468__fig52351103310"><span class="figcap"><b>Figure 2 </b>Selecting a driver version</span><br><span><img id="EN-US_TOPIC_0149470468__image123439449146" src="en-us_image_0000002150126353.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0149470468__li713172665816">Click <strong id="EN-US_TOPIC_0149470468__b222413497340">View</strong> in the row containing the driver to be downloaded.</li><li id="EN-US_TOPIC_0149470468__li126191531724">Right-click <strong id="EN-US_TOPIC_0149470468__b765313034212">Download</strong> and copy the download link.</li><li id="EN-US_TOPIC_0149470468__li207092513314">Run the following command on the <span id="EN-US_TOPIC_0149470468__text683823251115">ECS</span> to download the driver:<p id="EN-US_TOPIC_0149470468__p69610224146"><strong id="EN-US_TOPIC_0149470468__b344761812104326">wget </strong><em id="EN-US_TOPIC_0149470468__i842352697204719">Copied link</em></p>
<p id="EN-US_TOPIC_0149470468__p18729204149">For example, <strong id="EN-US_TOPIC_0149470468__b11710101482919">wget http://us.download.nvidia.com/tesla/418.67/NVIDIA-Linux-x86_64-418.67.run</strong></p>
@ -48,7 +48,7 @@ options nouveau modeset=0</pre>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0149470468__section244363219171"><a name="EN-US_TOPIC_0149470468__section244363219171"></a><a name="section244363219171"></a><h4 class="sectiontitle">Installing a Tesla Driver on a Windows <span id="EN-US_TOPIC_0149470468__text19911017173912">ECS</span></h4><p id="EN-US_TOPIC_0149470468__p14571105414189">The following uses Windows Server 2016 Standard 64bit as an example to describe how to install a Tesla driver on a GPU-accelerated ECS.</p>
<ol id="EN-US_TOPIC_0149470468__ol281965711396"><li id="EN-US_TOPIC_0149470468__li1819185714392">Log in to the <span id="EN-US_TOPIC_0149470468__text11254183518392">ECS</span>.</li><li id="EN-US_TOPIC_0149470468__li1884514453019">Download the NVIDIA driver package.<p id="EN-US_TOPIC_0149470468__p138456463016"><a name="EN-US_TOPIC_0149470468__li1884514453019"></a><a name="li1884514453019"></a>Select a driver version at <a href="https://www.nvidia.com/Download/index.aspx?lang=en-us" target="_blank" rel="noopener noreferrer">NVIDIA Driver Downloads</a> based on the ECS type.</p>
<ol id="EN-US_TOPIC_0149470468__ol281965711396"><li id="EN-US_TOPIC_0149470468__li1819185714392">Log in to the <span id="EN-US_TOPIC_0149470468__text11254183518392">ECS</span>.</li><li id="EN-US_TOPIC_0149470468__li1884514453019">Download the NVIDIA driver package.<p id="EN-US_TOPIC_0149470468__p138456463016"><a name="EN-US_TOPIC_0149470468__li1884514453019"></a><a name="li1884514453019"></a>Select a driver version at <a href="https://www.nvidia.com/Download/index.aspx?lang=en-us" target="_blank" rel="noopener noreferrer">NVIDIA Drivers</a> based on the ECS type.</p>
<div class="fignone" id="EN-US_TOPIC_0149470468__fig62897581106"><span class="figcap"><b>Figure 7 </b>Selecting a driver type (Windows)</span><br><span><img id="EN-US_TOPIC_0149470468__image2676533112414" src="en-us_image_0000002114450902.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0149470468__li779933211405">Select a driver version as required. The following uses Tesla 425.25 as an example.<div class="fignone" id="EN-US_TOPIC_0149470468__fig5291626204819"><span class="figcap"><b>Figure 8 </b>Selecting a driver version (Windows)</span><br><span><img id="EN-US_TOPIC_0149470468__image1260617233314" src="en-us_image_0000002114454596.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0149470468__li1994719159331">Click <strong id="EN-US_TOPIC_0149470468__b1956814507426">View</strong> in the row containing the driver to be downloaded.</li><li id="EN-US_TOPIC_0149470468__li394871513334">Click <strong id="EN-US_TOPIC_0149470468__b842352706105415">Download</strong> to download the installation package.</li><li id="EN-US_TOPIC_0149470468__li182225714393">Double-click the driver and click <strong id="EN-US_TOPIC_0149470468__b842352706105559">Run</strong>.<div class="fignone" id="EN-US_TOPIC_0149470468__fig177611624821"><span class="figcap"><b>Figure 9 </b>Running the NVIDIA driver installation program</span><br><span><img id="EN-US_TOPIC_0149470468__image56681375020" src="en-us_image_0234357053.png" title="Click to enlarge" class="imgResize"></span></div>
@ -63,13 +63,13 @@ options nouveau modeset=0</pre>
</li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0149470468__section1034245773916"><a name="EN-US_TOPIC_0149470468__section1034245773916"></a><a name="section1034245773916"></a><h4 class="sectiontitle">Installing the CUDA Toolkit on a Linux ECS</h4><p id="EN-US_TOPIC_0149470468__p18178144519315">The following uses Ubuntu 20.04 64bit as an example to describe how to install the CUDA 10.1 toolkit on a GPU-accelerated ECS.</p>
<ol id="EN-US_TOPIC_0149470468__ol1824057143911"><li id="EN-US_TOPIC_0149470468__li12824115753918">Log in to the <span id="EN-US_TOPIC_0149470468__text79691813134014">ECS</span>.</li><li id="EN-US_TOPIC_0149470468__li0299112411101">Update the system software based on the OS.<ul id="EN-US_TOPIC_0149470468__ul1229912247102"><li id="EN-US_TOPIC_0149470468__li10299182413102">Ubuntu<p id="EN-US_TOPIC_0149470468__p1929922411103"><a name="EN-US_TOPIC_0149470468__li10299182413102"></a><a name="li10299182413102"></a>Update the software installation source: <strong id="EN-US_TOPIC_0149470468__b1110461021">apt-get -y update</strong></p>
<p id="EN-US_TOPIC_0149470468__p1229912242106">Install necessary programs: <strong id="EN-US_TOPIC_0149470468__b908239181">apt-get install gcc g++ make</strong></p>
</li><li id="EN-US_TOPIC_0149470468__li42991124181013">CentOS<p id="EN-US_TOPIC_0149470468__p42999249106"><a name="EN-US_TOPIC_0149470468__li42991124181013"></a><a name="li42991124181013"></a>Update the software installation source: <strong id="EN-US_TOPIC_0149470468__b214333820">yum -y update --exclude=kernel* --exclude=centos-release* --exclude=initscripts*</strong></p>
<ol id="EN-US_TOPIC_0149470468__ol1824057143911"><li id="EN-US_TOPIC_0149470468__li12824115753918">Log in to the <span id="EN-US_TOPIC_0149470468__text79691813134014">ECS</span>.</li><li id="EN-US_TOPIC_0149470468__li0299112411101">Update the system software based on the OS.<ul id="EN-US_TOPIC_0149470468__ul1229912247102"><li id="EN-US_TOPIC_0149470468__li10299182413102">Ubuntu<p id="EN-US_TOPIC_0149470468__p1929922411103"><a name="EN-US_TOPIC_0149470468__li10299182413102"></a><a name="li10299182413102"></a>Update the software installation source: <strong id="EN-US_TOPIC_0149470468__b828231247">apt-get -y update</strong></p>
<p id="EN-US_TOPIC_0149470468__p1229912242106">Install necessary programs: <strong id="EN-US_TOPIC_0149470468__b951768483">apt-get install gcc g++ make</strong></p>
</li><li id="EN-US_TOPIC_0149470468__li42991124181013">CentOS<p id="EN-US_TOPIC_0149470468__p42999249106"><a name="EN-US_TOPIC_0149470468__li42991124181013"></a><a name="li42991124181013"></a>Update the software installation source: <strong id="EN-US_TOPIC_0149470468__b686167764">yum -y update --exclude=kernel* --exclude=centos-release* --exclude=initscripts*</strong></p>
<p id="EN-US_TOPIC_0149470468__p10299152421015">Install the desired program: <strong id="EN-US_TOPIC_0149470468__b5514123971014">yum install -y kernel-devel-`uname -r` gcc gcc-c++</strong></p>
</li></ul>
</li><li id="EN-US_TOPIC_0149470468__li882465713396">On the CUDA download page, set parameters according to the information shown in <a href="en-us_topic_0213874991.html">Obtaining a Tesla Driver and CUDA Toolkit</a>.<div class="fignone" id="EN-US_TOPIC_0149470468__fig1930101643513"><span class="figcap"><b>Figure 14 </b>Selecting a CUDA version</span><br><span><img id="EN-US_TOPIC_0149470468__image175827333914" src="en-us_image_0000002150256677.png" title="Click to enlarge" class="imgResize"></span></div>
</li><li id="EN-US_TOPIC_0149470468__li1782595793917">Find the link for downloading CUDA 10.1 corresponding to Ubuntu 20.04 64bit and copy the link.</li></ol><ol start="5" id="EN-US_TOPIC_0149470468__ol1636910373464"><li id="EN-US_TOPIC_0149470468__li3195133918464">Run the following command on the <span id="EN-US_TOPIC_0149470468__text641512394020">ECS</span> to download CUDA:<p id="EN-US_TOPIC_0149470468__p191959392460"><strong id="EN-US_TOPIC_0149470468__b1999250706">wget </strong><em id="EN-US_TOPIC_0149470468__i623275420">Copied link</em></p>
</li><li id="EN-US_TOPIC_0149470468__li1782595793917">Find the link for downloading CUDA 10.1 corresponding to Ubuntu 20.04 64bit and copy the link.</li></ol><ol start="5" id="EN-US_TOPIC_0149470468__ol1636910373464"><li id="EN-US_TOPIC_0149470468__li3195133918464">Run the following command on the <span id="EN-US_TOPIC_0149470468__text641512394020">ECS</span> to download CUDA:<p id="EN-US_TOPIC_0149470468__p191959392460"><strong id="EN-US_TOPIC_0149470468__b2092700056">wget </strong><em id="EN-US_TOPIC_0149470468__i353079022">Copied link</em></p>
<p id="EN-US_TOPIC_0149470468__p19195439104619">For example, <strong id="EN-US_TOPIC_0149470468__b119041673711342">wget https://developer.nvidia.com/compute/cuda/10.1/Prod/local_installers/cuda_10.1.105_418.39_linux.run</strong></p>
<div class="fignone" id="EN-US_TOPIC_0149470468__fig8354143184612"><span class="figcap"><b>Figure 15 </b>Downloading CUDA</span><br><span><img id="EN-US_TOPIC_0149470468__image18604954660" src="en-us_image_0234358619.png" title="Click to enlarge" class="imgResize"></span></div>
</li></ol><ol start="6" id="EN-US_TOPIC_0149470468__ol082565763914"><li id="EN-US_TOPIC_0149470468__li188272570394">Install CUDA.<p id="EN-US_TOPIC_0149470468__p42101851184818"><a name="EN-US_TOPIC_0149470468__li188272570394"></a><a name="li188272570394"></a>Follow the instructions provided on the official NVIDIA website.</p>

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@ -28,7 +28,7 @@
</li><li id="EN-US_TOPIC_0163572589__en-us_topic_0144542112_li1028311311618">Shared image<p id="EN-US_TOPIC_0163572589__en-us_topic_0144542112_p13283813962"><a name="EN-US_TOPIC_0163572589__en-us_topic_0144542112_li1028311311618"></a><a name="en-us_topic_0144542112_li1028311311618"></a>A shared image is a private image shared by another user.</p>
</li></ul>
</li><li id="EN-US_TOPIC_0163572589__li73882010165514">(Optional) Set <strong id="EN-US_TOPIC_0163572589__b391711317404">Protection</strong>.<p id="EN-US_TOPIC_0163572589__p2388191016551">When using certain public images, you are advised to enable protection to improve the overall security for ECSs. HSS is designed to improve the overall security for ECSs. It reduces security risks with account cracking prevention, weak password detection, malicious program detection, two-factor authentication, vulnerability management, and web page anti-tampering.</p>
<div class="p" id="EN-US_TOPIC_0163572589__p1388010115518">Select one of the following options:<ul id="EN-US_TOPIC_0163572589__ul338831015558"><li id="EN-US_TOPIC_0163572589__li1388171014558"><strong id="EN-US_TOPIC_0163572589__b5969102415191">Advanced HSS edition (paid)</strong>: You can choose the enterprise edition and you need to pay for it.</li><li id="EN-US_TOPIC_0163572589__li32065291944"><strong id="EN-US_TOPIC_0163572589__b7177141812260">None</strong>: HSS is disabled and servers are not protected.</li></ul>
<div class="p" id="EN-US_TOPIC_0163572589__p1388010115518">Select one of the following options:<ul id="EN-US_TOPIC_0163572589__ul338831015558"><li id="EN-US_TOPIC_0163572589__li1388171014558"><strong id="EN-US_TOPIC_0163572589__b5969102415191">Advanced HSS edition (paid)</strong>: You can choose the enterprise edition.</li><li id="EN-US_TOPIC_0163572589__li32065291944"><strong id="EN-US_TOPIC_0163572589__b7177141812260">None</strong>: HSS is disabled and servers are not protected.</li></ul>
</div>
<p id="EN-US_TOPIC_0163572589__p1938861015518">After you select an HSS edition, the system automatically installs the HSS agent, enables account cracking prevention, and offers host security functions.</p>
</li><li id="EN-US_TOPIC_0163572589__en-us_topic_0144542112_li16284191312617">(Optional) Set <strong id="EN-US_TOPIC_0163572589__en-us_topic_0013859510_b84235270619932">License Type</strong>.<p id="EN-US_TOPIC_0163572589__en-us_topic_0144542112_p028391320616">Specify a license type for using an OS or software. This parameter is displayed only when the selected image is billed.</p>

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@ -12,9 +12,9 @@
</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li55701948205215">Set <strong id="EN-US_TOPIC_0163572590__b842352706114916">Security Group</strong> by selecting an available security group from the drop-down list or creating a new one.<p id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p15826037175410">A security group controls <span id="EN-US_TOPIC_0163572590__text341614126228">ECS</span> access within or between security groups by defining access rules. This enhances <span id="EN-US_TOPIC_0163572590__text5937924175316">ECS</span> security.</p>
<p id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p82889131569">When creating an <span id="EN-US_TOPIC_0163572590__text172731428112213">ECS</span>, you can select multiple (recommended not more than five) security groups. In such a case, the access rules of all the selected security groups apply on the <span id="EN-US_TOPIC_0163572590__text17594326227">ECS</span>.</p>
<div class="note" id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_note2289131314617"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p112897137617">Before initializing an <span id="EN-US_TOPIC_0163572590__text106961544132211">ECS</span>, ensure that the security group rules for the outbound direction meet the following requirements:</p>
<ul id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_ul17289141315613"><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1028961313614">Protocol &amp; Port: TCP</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1289171315614">Port: 80</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1328910131463">Destination: 169.254.0.0/16</li></ul>
<div class="p" id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p1228961310612">If you use the default security group rule listed below for the outbound direction, the preceding requirements are met, and the ECS can be initialized:<ul id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_ul1289213368"><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li142891313365">Protocol &amp; Port: All</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1828911316618">Port range: All ports</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1728991320612">Destination: 0.0.0.0/0</li></ul>
<div class="note" id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_note2289131314617"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p112897137617">Before initializing an <span id="EN-US_TOPIC_0163572590__text106961544132211">ECS</span>, ensure that the outbound rule of the ECS security group meets the following requirements:</p>
<ul id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_ul17289141315613"><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1028961313614">Protocol: TCP</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1289171315614">Port: 80</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1328910131463">Destination: 169.254.0.0/16</li></ul>
<div class="p" id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p1228961310612">If you use the outbound rules of the default security group, the preceding requirements are met by default. The outbound rules of the default security group are as follows:<ul id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_ul1289213368"><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li142891313365">Protocol: All</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1828911316618">Port: All</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1728991320612">Destination: 0.0.0.0/0</li></ul>
</div>
</div></div>
</li><li id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_li1699822120551">Set <strong id="EN-US_TOPIC_0163572590__b6904103018227"><span id="EN-US_TOPIC_0163572590__text159501718642">EIP</span></strong>.<p id="EN-US_TOPIC_0163572590__en-us_topic_0144542112_p15510161455611">An EIP is a static public IP address bound to an ECS in a VPC. Using the EIP, the ECS can provide services externally.</p>

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<div class="note" id="EN-US_TOPIC_0163572591__note259795141018"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0163572591__p559818513106">An existing <span id="EN-US_TOPIC_0163572591__text7971112654514">ECS</span> attached with a local disk cannot be added to an <span id="EN-US_TOPIC_0163572591__text64247589262">ECS</span> group. To use <span id="EN-US_TOPIC_0163572591__text1232015314278">ECS</span> group functions, select an <span id="EN-US_TOPIC_0163572591__text5542578277">ECS</span> group when creating an <span id="EN-US_TOPIC_0163572591__text139891010279">ECS</span>.</p>
</div></div>
</li><li id="EN-US_TOPIC_0163572591__en-us_topic_0144542112_li17308613564">To use functions listed in <strong id="EN-US_TOPIC_0163572591__en-us_topic_0053536933_b4586416619386">Advanced Options</strong>, select <strong id="EN-US_TOPIC_0163572591__en-us_topic_0053536933_b842352706193817">Configure now</strong>. Otherwise, do not select it.<ul id="EN-US_TOPIC_0163572591__en-us_topic_0144542112_ul430731313617"><li id="EN-US_TOPIC_0163572591__en-us_topic_0144542112_li230615136610">User Data<p id="EN-US_TOPIC_0163572591__en-us_topic_0144542112_p1630615131066"><a name="EN-US_TOPIC_0163572591__en-us_topic_0144542112_li230615136610"></a><a name="en-us_topic_0144542112_li230615136610"></a>You can specify the user data. The user data will be automatically passed to the ECS when the ECS starts for the first time. This configuration is optional.</p>
<ul id="EN-US_TOPIC_0163572591__ul1926411095114"><li id="EN-US_TOPIC_0163572591__li74004516512"><strong id="EN-US_TOPIC_0163572591__b244686112419">As text</strong>: allows you to enter the user data in the text box.</li><li id="EN-US_TOPIC_0163572591__li1942018565111"><strong id="EN-US_TOPIC_0163572591__b89141527102716">As file</strong>: enables the text to automatically inject a script file or other files into a specified directory on an ECS when you create the ECS.</li></ul>
<ul id="EN-US_TOPIC_0163572591__ul1926411095114"><li id="EN-US_TOPIC_0163572591__li74004516512"><strong id="EN-US_TOPIC_0163572591__b244686112419">As text</strong>: allows you to enter the user data in the text box.</li><li id="EN-US_TOPIC_0163572591__li1942018565111"><strong id="EN-US_TOPIC_0163572591__b1787064753216">As file</strong>: allows you to inject user data by uploading script files or other files during <span id="EN-US_TOPIC_0163572591__text9870154715320">ECS</span> creation.</li></ul>
<p id="EN-US_TOPIC_0163572591__p1270324025116">For example, if you activate user <strong id="EN-US_TOPIC_0163572591__b96297328246">root</strong> permission by passing a script file to an ECS, you can log in to the <span id="EN-US_TOPIC_0163572591__text9635133218245">ECS</span> as user <strong id="EN-US_TOPIC_0163572591__b2063517328243">root</strong>.</p>
<p id="EN-US_TOPIC_0163572591__p2761434145116">For details about how to inject user data, see <a href="en-us_topic_0032380449.html">Injecting User Data</a>.</p>
</li><li id="EN-US_TOPIC_0163572591__en-us_topic_0144542112_li53077130612">Tag<p id="EN-US_TOPIC_0163572591__en-us_topic_0144542112_p33071413265"><a name="EN-US_TOPIC_0163572591__en-us_topic_0144542112_li53077130612"></a><a name="en-us_topic_0144542112_li53077130612"></a>This configuration is optional. You can tag an ECS to identify and manage your <span id="EN-US_TOPIC_0163572591__text19266105723711">ECS</span> resources easily. A maximum of 10 tags can be added to an ECS.</p>

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