forked from docs/doc-exports
Lu, Huayi
c5fcb46315
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
19 lines
3.8 KiB
HTML
19 lines
3.8 KiB
HTML
<a name="EN-US_TOPIC_0000001134560520"></a><a name="EN-US_TOPIC_0000001134560520"></a>
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<h1 class="topictitle1">Cluster Restart</h1>
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<div id="body1489027756989"><p id="EN-US_TOPIC_0000001134560520__p1339352416305">If a cluster is in the <strong id="EN-US_TOPIC_0000001134560520__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 in the parameter template, manually restart the cluster to make the configurations take effect.</p>
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<div class="section" id="EN-US_TOPIC_0000001134560520__section33979687105031"><h4 class="sectiontitle">Impact on the System</h4><ul id="EN-US_TOPIC_0000001134560520__ul2692121616"><li id="EN-US_TOPIC_0000001134560520__li22239498495">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_0000001134560520__p106801824145115"><a name="EN-US_TOPIC_0000001134560520__li22239498495"></a><a name="li22239498495"></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_0000001134560520__p040875705210">View the <span class="parmvalue" id="EN-US_TOPIC_0000001134560520__parmvalue124102576527"><b>Session Count</b></span> and <span class="parmvalue" id="EN-US_TOPIC_0000001134560520__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_0000001134560520__li156911151617">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_0000001134560520__li1669141181616">If the restart fails, the cluster may be unavailable. Try again later or contact technical support.</li></ul>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001134560520__section59074732104918"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001134560520__ol53148594104951"><li id="EN-US_TOPIC_0000001134560520__li1790212596317"><span>Log in to the GaussDB(DWS) management console.</span></li><li id="EN-US_TOPIC_0000001134560520__li640122716457"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000001134560520__uicontrol5761104616457"><b>Clusters</b></span>.</span></li><li id="EN-US_TOPIC_0000001134560520__li28325161164515"><span>In the <strong id="EN-US_TOPIC_0000001134560520__b842352706154943">Operation</strong> column of the cluster to be restarted, click <strong id="EN-US_TOPIC_0000001134560520__b842352706155026">Restart</strong>.</span></li><li id="EN-US_TOPIC_0000001134560520__li48630339105019"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001134560520__uicontrol1345370416853"><b>Yes</b></span>.</span><p><p id="EN-US_TOPIC_0000001134560520__p3369423610522"><span class="parmname" id="EN-US_TOPIC_0000001134560520__parmname769647905102435"><b>Task Information</b></span> changes to <span class="parmvalue" id="EN-US_TOPIC_0000001134560520__parmvalue555125744102457"><b>Restarting</b></span>. When <span class="parmname" id="EN-US_TOPIC_0000001134560520__parmname1323243201091"><b>Cluster Status</b></span> changes to <span class="parmvalue" id="EN-US_TOPIC_0000001134560520__parmvalue555125744102546"><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>
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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">Clusters</a></div>
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</div>
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</div>
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