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luhuayi
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Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: luhuayi <luhuayi@huawei.com> Co-committed-by: luhuayi <luhuayi@huawei.com>
34 lines
9.4 KiB
HTML
34 lines
9.4 KiB
HTML
<a name="EN-US_TOPIC_0000001952008273"></a><a name="EN-US_TOPIC_0000001952008273"></a>
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<h1 class="topictitle1">Starting and Stopping a Cluster</h1>
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<div id="body1489027756989"><div class="section" id="EN-US_TOPIC_0000001952008273__section215618565260"><h4 class="sectiontitle">Restarting a cluster</h4><p id="EN-US_TOPIC_0000001952008273__p15983181720277">If a cluster is in the <strong id="EN-US_TOPIC_0000001952008273__b3991499361">Unbalanced</strong> state or cannot work properly, you may need to restart it for restoration. After modifying a cluster's configurations, such as security settings and parameters, manually restart the cluster to make the configurations take effect.</p>
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<p id="EN-US_TOPIC_0000001952008273__p9133142919278"><strong id="EN-US_TOPIC_0000001952008273__b56921334134312">Impact on the System </strong></p>
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<ul id="EN-US_TOPIC_0000001952008273__ul1121918284"><li id="EN-US_TOPIC_0000001952008273__li1912109152818">A cluster cannot provide services during the restart. Therefore, before the restart, ensure that no task is running and all data is saved.<p id="EN-US_TOPIC_0000001952008273__p101212932812"><a name="EN-US_TOPIC_0000001952008273__li1912109152818"></a><a name="li1912109152818"></a>If the cluster is processing service data, such as importing data, querying data, creating snapshots, or restoring snapshots, cluster restarting will cause file damage or restart failure. You are advised to stop all cluster tasks before restarting the cluster.</p>
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<p id="EN-US_TOPIC_0000001952008273__p2012897286">View the <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue124102576527"><b>Session Count</b></span> and <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue34109575524"><b>Active SQL Count</b></span> metrics to check whether the cluster has active events. For details, see <a href="dws_01_0022.html">Monitoring Clusters Using Cloud Eye</a>.</p>
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</li><li id="EN-US_TOPIC_0000001952008273__li5131912287">The time required for restarting a cluster depends on the cluster scale and services. Generally, it takes about 3 minutes to restart a cluster. The duration does not exceed 20 minutes.</li><li id="EN-US_TOPIC_0000001952008273__li913129102818">If the restart fails, the cluster may be unavailable. Try again later or contact technical support.</li></ul>
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<p id="EN-US_TOPIC_0000001952008273__p1044816148282"><strong id="EN-US_TOPIC_0000001952008273__b148141722132813">Procedure</strong></p>
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<ol id="EN-US_TOPIC_0000001952008273__ol15189331192815"><li id="EN-US_TOPIC_0000001952008273__li191892315289"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001952008273__li1189153119286"><span>Choose <strong id="EN-US_TOPIC_0000001952008273__b48441915351">Clusters</strong> > <strong id="EN-US_TOPIC_0000001952008273__b17845161133518">Dedicated Clusters<span id="EN-US_TOPIC_0000001952008273__text16240634161016"></span></strong>.</span></li><li id="EN-US_TOPIC_0000001952008273__li018973116281"><span>In the <strong id="EN-US_TOPIC_0000001952008273__b134344655110395">Operation</strong> column of the cluster to be restarted, click <strong id="EN-US_TOPIC_0000001952008273__b58727833010395">Restart</strong>.</span></li><li id="EN-US_TOPIC_0000001952008273__li418933182818"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001952008273__uicontrol1345370416853"><b>Yes</b></span>.</span><p><p id="EN-US_TOPIC_0000001952008273__p1019013318287"><span class="parmname" id="EN-US_TOPIC_0000001952008273__parmname769647905102435"><b>Task Information</b></span> changes to <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue555125744102457"><b>Restarting</b></span>. When <span class="parmname" id="EN-US_TOPIC_0000001952008273__parmname191901931182810"><b>Cluster Status</b></span> changes to <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue81901931142812"><b>Available</b></span> again, the cluster is successfully restarted.</p>
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</p></li></ol>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001952008273__section193983556288"><h4 class="sectiontitle">Stopping a Cluster</h4><p id="EN-US_TOPIC_0000001952008273__p572063312592">If a cluster is no longer used, you can stop the cluster to bring services offline.</p>
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<div class="note" id="EN-US_TOPIC_0000001952008273__note13477656192916"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001952008273__ul9480125153318"><li id="EN-US_TOPIC_0000001952008273__li44805258330">If the current console does not support this feature, contact technical support. </li><li id="EN-US_TOPIC_0000001952008273__li1048092583310">After the cluster is stopped, ECS basic resources (vCPUs and memory) are no longer reserved. When you start the service again, it may fail to be started due to insufficient resources. In this case, wait for a while and try again later.</li></ul>
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</div></div>
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<p id="EN-US_TOPIC_0000001952008273__p14330123422912"><strong id="EN-US_TOPIC_0000001952008273__b733083414296">Procedure</strong></p>
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<ol id="EN-US_TOPIC_0000001952008273__ol4330143422913"><li id="EN-US_TOPIC_0000001952008273__li13330113402918"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001952008273__li4330334142911"><span>In the navigation pane, choose <strong id="EN-US_TOPIC_0000001952008273__b6627125355">Clusters</strong> > <strong id="EN-US_TOPIC_0000001952008273__b2063151213358">Dedicated Clusters<span id="EN-US_TOPIC_0000001952008273__text93545468107"></span></strong>.</span></li><li id="EN-US_TOPIC_0000001952008273__li143307343293"><span>On the <span class="wintitle" id="EN-US_TOPIC_0000001952008273__wintitle103311334192915"><b>Dedicated Clusters<span id="EN-US_TOPIC_0000001952008273__text129961087113"></span></b></span> page, locate the row that contains the target dedicated cluster, click <strong id="EN-US_TOPIC_0000001952008273__b6635538101714">More</strong> > <strong id="EN-US_TOPIC_0000001952008273__b1965740101718">Stop</strong> in the <strong id="EN-US_TOPIC_0000001952008273__b12311191816411">Operation</strong> column.</span></li><li id="EN-US_TOPIC_0000001952008273__li143311134162914"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001952008273__uicontrol276460278"><b>Yes</b></span>.</span><p><p id="EN-US_TOPIC_0000001952008273__p73313340296">The <span class="parmname" id="EN-US_TOPIC_0000001952008273__parmname15331534192910"><b>Task Information</b></span> of the cluster changes to <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue103321434112918"><b>Stopping</b></span>. If the <strong id="EN-US_TOPIC_0000001952008273__b11931133411420">Cluster Status</strong> changes to <strong id="EN-US_TOPIC_0000001952008273__b493219341343">Stopped</strong>, the cluster is stopped successfully.</p>
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</p></li></ol>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001952008273__section6834151811262"><h4 class="sectiontitle">Starting a Cluster</h4><p id="EN-US_TOPIC_0000001952008273__p8060118">You can start a stopped cluster to restore cluster services.</p>
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<div class="note" id="EN-US_TOPIC_0000001952008273__note1158584523517"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001952008273__p174046551359">If the current console does not support this feature, contact technical support. </p>
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</div></div>
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<p id="EN-US_TOPIC_0000001952008273__p8164183515581"><strong id="EN-US_TOPIC_0000001952008273__b22061038105812">Procedure</strong></p>
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<ol id="EN-US_TOPIC_0000001952008273__ol6516341122612"><li id="EN-US_TOPIC_0000001952008273__li11516134152616"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001952008273__li1640916486565"><span>In the navigation pane, choose <strong id="EN-US_TOPIC_0000001952008273__b163461732113514">Clusters</strong> > <strong id="EN-US_TOPIC_0000001952008273__b1834720323358">Dedicated Clusters<span id="EN-US_TOPIC_0000001952008273__text1634703293510"></span></strong>.</span></li><li id="EN-US_TOPIC_0000001952008273__li164099489561"><span>On the <span class="wintitle" id="EN-US_TOPIC_0000001952008273__wintitle240904811562"><b>Dedicated Clusters<span id="EN-US_TOPIC_0000001952008273__text1399516318117"></span></b></span> page, locate the row that contains the target dedicated cluster, click <strong id="EN-US_TOPIC_0000001952008273__b152851158185">More</strong> > <strong id="EN-US_TOPIC_0000001952008273__b183331617111817">Start</strong> in the <strong id="EN-US_TOPIC_0000001952008273__b224015200918">Operation</strong> column.</span></li><li id="EN-US_TOPIC_0000001952008273__li155161141182616"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001952008273__uicontrol1925273045"><b>Yes</b></span>.</span><p><p id="EN-US_TOPIC_0000001952008273__p1351714411265">The <span class="parmname" id="EN-US_TOPIC_0000001952008273__parmname8517164152619"><b>Task Information</b></span> of the cluster changes to <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue185172414261"><b>Starting</b></span>. If the <span class="parmname" id="EN-US_TOPIC_0000001952008273__parmname651724110269"><b>Cluster Status</b></span> changes to <span class="parmvalue" id="EN-US_TOPIC_0000001952008273__parmvalue1851714122616"><b>Available</b></span>, the cluster is started successfully.</p>
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</p></li></ol>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_01_0600.html">Cluster Management</a></div>
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</div>
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</div>
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