forked from docs/doc-exports
Yang, Tong
2195db241c
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Reviewed-by: Rechenburg, Matthias <matthias.rechenburg@t-systems.com> Co-authored-by: Yang, Tong <yangtong2@huawei.com> Co-committed-by: Yang, Tong <yangtong2@huawei.com>
57 lines
9.4 KiB
HTML
57 lines
9.4 KiB
HTML
<a name="admin_guide_000046"></a><a name="admin_guide_000046"></a>
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<h1 class="topictitle1">Managing Instance Groups</h1>
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<div id="body1529658735911"><div class="section" id="admin_guide_000046__section12611753124918"><h4 class="sectiontitle">Scenario</h4><p id="admin_guide_000046__p149125716495">Instance groups can be managed on <span id="admin_guide_000046__text154091129192818">MRS</span> Manager. That is, you can group multiple instances in the same role based on a specified principle, such as the nodes with the same hardware configuration. The modification on the configuration parameters of an instance group applies to all instances in the group.</p>
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<p id="admin_guide_000046__p155241247175812">In a large cluster, instance groups are used to improve the capability of managing instances in batches in the heterogeneous environment. After instances are grouped, the instances can be configured repeatedly to reduce redundant instance configuration items and improve system performance.</p>
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</div>
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<div class="section" id="admin_guide_000046__section15654145916233"><h4 class="sectiontitle">Creating an Instance Group</h4><ol id="admin_guide_000046__ol109076568143"><li id="admin_guide_000046__li164975055814"><span>Log in to <span id="admin_guide_000046__text1932879203619">MRS</span> Manager.</span></li><li id="admin_guide_000046__li7497505580"><span>Choose <strong id="admin_guide_000046__b1888136192419">Cluster</strong> > <em id="admin_guide_000046__i7881266248">Name of the desired cluster</em> > <strong id="admin_guide_000046__b1189146102414">Services</strong>.</span></li><li id="admin_guide_000046__li6310122713223"><span>Click the specified service name on the service management page.</span></li><li id="admin_guide_000046__li7516519122617"><span>On the displayed page, click the <strong id="admin_guide_000046__b14401150191314">Instance Groups</strong> tab.</span><p><p id="admin_guide_000046__p71007245279">Click <span><img id="admin_guide_000046__image1485442541313" src="en-us_image_0000001442413917.png"></span> and configure parameters as prompted.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000046__table15278195622717" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Instance group configuration parameters</caption><thead align="left"><tr id="admin_guide_000046__row827815567271"><th align="left" class="cellrowborder" valign="top" width="25%" id="mcps1.3.2.2.4.2.2.2.3.1.1"><p id="admin_guide_000046__p18278155619277"><strong id="admin_guide_000046__b84235270615443">Parameter</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="75%" id="mcps1.3.2.2.4.2.2.2.3.1.2"><p id="admin_guide_000046__p1227835642715"><strong id="admin_guide_000046__b109931469147">Description</strong></p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="admin_guide_000046__row1027895652712"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.2.2.4.2.2.2.3.1.1 "><p id="admin_guide_000046__p82781356112716"><strong id="admin_guide_000046__b1997300319">The group name</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.2.2.4.2.2.2.3.1.2 "><p id="admin_guide_000046__p162781356182715">Indicates the instance group name. The value can contain only letters, digits, underscores (_), hyphens (-), and spaces. It must start with a letter, digit, underscore (_), or hyphen (-) and cannot ends with a space. It can contain a maximum of 99 characters.</p>
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</td>
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</tr>
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<tr id="admin_guide_000046__row8206606295"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.2.2.4.2.2.2.3.1.1 "><p id="admin_guide_000046__p120612011293"><strong id="admin_guide_000046__b1256920719239">Role</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.2.2.4.2.2.2.3.1.2 "><p id="admin_guide_000046__p1720612011299">Indicates the role to which an instance group belongs.</p>
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</td>
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</tr>
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<tr id="admin_guide_000046__row427845611272"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.2.2.4.2.2.2.3.1.1 "><p id="admin_guide_000046__p927885616275"><strong id="admin_guide_000046__b1426802211418">Copy From</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.2.2.4.2.2.2.3.1.2 "><p id="admin_guide_000046__p112781356192720">Indicates that the parameter values of a specified instance group are copied to the parameters of a new group. If the value is null, the default values are used for the parameters of the new group.</p>
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<tr id="admin_guide_000046__row935681513291"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.2.2.4.2.2.2.3.1.1 "><p id="admin_guide_000046__p6356115122910"><strong id="admin_guide_000046__b18771241162816">Description</strong></p>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.2.2.4.2.2.2.3.1.2 "><p id="admin_guide_000046__p20357191510291">Indicates the instance group description. It can contain only letters, digits, commas (,), periods (.), underscores (_), spaces, and line breaks, and can contain a maximum of 200 characters.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="note" id="admin_guide_000046__note420514272301"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="admin_guide_000046__ul112075277303"><li id="admin_guide_000046__li14207162733017">Each instance must belong to only one instance group. When an instance is installed for the first time, it belongs to the instance group <em id="admin_guide_000046__i10694112612317">Role name</em>-<strong id="admin_guide_000046__b16342163513111">DEFAULT</strong> by default.</li><li id="admin_guide_000046__li10208132713302">You can delete unnecessary or unused instance groups. Before deleting an instance group, migrate all instances in the group to other instance groups, and then delete the instance group by referring to <a href="#admin_guide_000046__section10369132812451">Deleting an Instance Group</a>. The default instance group cannot be deleted.</li></ul>
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</div></div>
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</p></li><li id="admin_guide_000046__li297610548348"><span>Click <strong id="admin_guide_000046__b69771540342">OK</strong>.</span><p><p id="admin_guide_000046__p18627145613414">The instance group is created.</p>
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</p></li></ol>
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</div>
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<div class="section" id="admin_guide_000046__section111241946154212"><h4 class="sectiontitle">Modifying Properties of an Instance Group</h4><ol id="admin_guide_000046__ol412484634216"><li id="admin_guide_000046__li151241146114214"><span>Log in to <span id="admin_guide_000046__text92422111361">MRS</span> Manager.</span></li><li id="admin_guide_000046__li1126174612421"><span>Choose <strong id="admin_guide_000046__b151531746815">Cluster</strong> > <em id="admin_guide_000046__i171611241689">Name of the desired cluster</em> > <strong id="admin_guide_000046__b416210412810">Services</strong>.</span></li><li id="admin_guide_000046__li81301946134217"><span>Click the specified service name on the service management page.</span></li><li id="admin_guide_000046__li19131246114217"><span>Click the <strong id="admin_guide_000046__b11712751143619">Instance Groups</strong> tab. On the <strong id="admin_guide_000046__b1534364184311">Instance Groups</strong> tab page, locate the row that contains the target instance group.</span><p><p id="admin_guide_000046__p513314463423">Click <span><img id="admin_guide_000046__image1111184475912" src="en-us_image_0000001392414446.png"></span> and modify parameters as prompted.</p>
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</p></li><li id="admin_guide_000046__li9150114664218"><span>Click <span class="uicontrol" id="admin_guide_000046__uicontrol1860173713718"><b>OK</b></span> to save the modifications.</span><p><p id="admin_guide_000046__p13931138154415">The default instance group cannot be modified.</p>
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</p></li></ol>
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</div>
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<div class="section" id="admin_guide_000046__section10369132812451"><a name="admin_guide_000046__section10369132812451"></a><a name="section10369132812451"></a><h4 class="sectiontitle">Deleting an Instance Group</h4><ol id="admin_guide_000046__ol143701128144519"><li id="admin_guide_000046__li03701028164514"><span>Log in to <span id="admin_guide_000046__text1382613163619">MRS</span> Manager.</span></li><li id="admin_guide_000046__li19371122834517"><span>Choose <strong id="admin_guide_000046__b31267101386">Cluster</strong> > <em id="admin_guide_000046__i71361510982">Name of the desired cluster</em> > <strong id="admin_guide_000046__b1913613101980">Services</strong>.</span></li><li id="admin_guide_000046__li1037617284451"><span>Click the specified service name on the service management page.</span></li><li id="admin_guide_000046__li18377192864517"><span>Click the <strong id="admin_guide_000046__b15122338184310">Instance Groups</strong> tab. On the <strong id="admin_guide_000046__b1012353864316">Instance Groups</strong> tab page, locate the row that contains the target instance group.</span></li><li id="admin_guide_000046__li653485164520"><span>Click <span><img id="admin_guide_000046__image1322714416015" src="en-us_image_0000001442773673.png"></span>.</span></li><li id="admin_guide_000046__li237942811452"><span>In the displayed dialog box, click <strong id="admin_guide_000046__b842352706102711">OK</strong>.</span><p><p id="admin_guide_000046__p43801228114516">The default instance group cannot be deleted.</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="admin_guide_000045.html">Instance Group</a></div>
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