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>
34 lines
6.9 KiB
HTML
34 lines
6.9 KiB
HTML
<a name="EN-US_TOPIC_0000001180440157"></a><a name="EN-US_TOPIC_0000001180440157"></a>
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<h1 class="topictitle1">Cluster Upgrade</h1>
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<div id="body1532402323813"><p id="EN-US_TOPIC_0000001180440157__p184711857102810">After you create a data warehouse cluster, the system automatically configures a random maintenance window for the cluster. Alternatively, you can customize a maintenance window as required. For details about how to view and configure the maintenance window, see <a href="#EN-US_TOPIC_0000001180440157__section1583412504297">Configuring the Maintenance Window</a>.</p>
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<p id="EN-US_TOPIC_0000001180440157__p8060118">The validity period of the maintenance window (maximum maintenance duration) is 4 hours. During this period, you can upgrade the cluster, install operating system patches, and harden the system. If no maintenance tasks are performed within the planned maintenance window, the cluster continues to run properly until the next maintenance window. GaussDB(DWS) will notify you of any cluster O&M operation by sending SMS messages. Exercise caution when performing operations on the cluster during the O&M period.</p>
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<p id="EN-US_TOPIC_0000001180440157__p417322713614">If the upgrade affects the current query requests or service running, contact technical support for emergency handling.</p>
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<p id="EN-US_TOPIC_0000001180440157__p761016102454">A cluster is charged by hour as long as it is in the <strong id="EN-US_TOPIC_0000001180440157__b113120414382">Available</strong> state. Since the cluster is charged by hour, you will not see any difference in the bills if a faulty node or system upgrade causes a short interruption, for example, 15 minutes. If such events cause major system interruption, which is a very rare case, you will not be charged for those downtime hours.</p>
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<div class="section" id="EN-US_TOPIC_0000001180440157__section820391923314"><h4 class="sectiontitle">Upgrading a Cluster</h4><p id="EN-US_TOPIC_0000001180440157__p4388530815716">You do not need to care about GaussDB(DWS) cluster patching or upgrading because GaussDB(DWS) will handle version upgrade automatically. After GaussDB(DWS) is upgraded, the service automatically upgrades the clusters to the latest version within the maintenance window. During the upgrade, the cluster is automatically restarted and cannot provide services for a short period of time. Therefore, you are advised to set a suitable time range when the number of connected users and the number of active tasks are small.</p>
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<div class="note" id="EN-US_TOPIC_0000001180440157__note18499153772516"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440157__p1149913715257">After the cluster is upgraded, it cannot be rolled back.</p>
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</div></div>
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<p id="EN-US_TOPIC_0000001180440157__p1448801517493">The following figure shows the cluster version.</p>
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<div class="fignone" id="EN-US_TOPIC_0000001180440157__fig20809175412226"><span class="figcap"><b>Figure 1 </b>Version description</span><br><span><img id="EN-US_TOPIC_0000001180440157__image9910157182211" src="figure/en-us_image_0000001134400976.png" width="234.41250000000002" height="178.6722" title="Click to enlarge" class="imgResize"></span></div>
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<ul id="EN-US_TOPIC_0000001180440157__ul17243116115012"><li id="EN-US_TOPIC_0000001180440157__li67071942414"><strong id="EN-US_TOPIC_0000001180440157__b14754131912712">Service patch upgrade</strong>: The last digit of cluster version <em id="EN-US_TOPIC_0000001180440157__i842352697165623_1">X.X.X</em> is changed. For example, the cluster is upgraded from 1.1.0 to 1.1.1.<ul id="EN-US_TOPIC_0000001180440157__ul3865489315824"><li id="EN-US_TOPIC_0000001180440157__li1027067015824">Duration: The whole process will take less than 10 minutes.</li><li id="EN-US_TOPIC_0000001180440157__li857124515824">Impact on services: During this period, services will be interrupted for 1 to 3 minutes.</li></ul>
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</li><li id="EN-US_TOPIC_0000001180440157__li42438160505"><strong id="EN-US_TOPIC_0000001180440157__b33671010911">Service upgrade</strong>: The first two digits of cluster version <em id="EN-US_TOPIC_0000001180440157__i7521510392">X.X.X</em> are changed. For example, the cluster is upgraded from 1.1.0 to 1.2.0.<ul id="EN-US_TOPIC_0000001180440157__ul5315405915828"><li id="EN-US_TOPIC_0000001180440157__li1360771515828">Duration: The whole process will take less than 30 minutes.</li><li id="EN-US_TOPIC_0000001180440157__li2543351815828">Impact on services: During this period, the database cannot be accessed.</li></ul>
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</li></ul>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001180440157__section1583412504297"><a name="EN-US_TOPIC_0000001180440157__section1583412504297"></a><a name="section1583412504297"></a><h4 class="sectiontitle">Configuring the Maintenance Window</h4><ol id="EN-US_TOPIC_0000001180440157__ol1169623853011"><li id="EN-US_TOPIC_0000001180440157__li186964380309"><span>Log in to the GaussDB(DWS) management console.</span></li><li id="EN-US_TOPIC_0000001180440157__li169613833019"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000001180440157__uf249e9a432364710a9c31a3f5d8a6aad"><b>Clusters</b></span>.</span></li><li id="EN-US_TOPIC_0000001180440157__li97131838203014"><span>In the cluster list, click the name of the target cluster. The <span class="parmname" id="EN-US_TOPIC_0000001180440157__parmname10416912115225"><b>Basic Information</b></span> page is displayed.</span><p><p id="EN-US_TOPIC_0000001180440157__p1471393819303">In the <span class="parmname" id="EN-US_TOPIC_0000001180440157__parmname1740518172203"><b>Cluster Information</b></span> area, you can view the maintenance window.</p>
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</p></li><li id="EN-US_TOPIC_0000001180440157__li1840025516559"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000001180440157__uicontrol5861112852015"><b>Configure</b></span> next to <span class="parmname" id="EN-US_TOPIC_0000001180440157__parmname18868112892012"><b>Maintenance Window</b></span>.</span></li><li id="EN-US_TOPIC_0000001180440157__li179481727102815"><span>In the dialog box that is displayed, configure the maintenance window.</span><p><div class="fignone" id="EN-US_TOPIC_0000001180440157__fig37133387306"><span class="figcap"><b>Figure 2 </b>Configuring the maintenance window</span><br><span><img id="EN-US_TOPIC_0000001180440157__image152641152001" src="figure/en-us_image_0000001134560768.png" width="465.5" height="275.500057" title="Click to enlarge" class="imgResize"></span></div>
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</p></li><li id="EN-US_TOPIC_0000001180440157__li3361142018292"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000001180440157__uicontrol724010315539"><b>OK</b></span>.</span></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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