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>
141 lines
15 KiB
HTML
141 lines
15 KiB
HTML
<a name="admin_guide_000038"></a><a name="admin_guide_000038"></a>
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<h1 class="topictitle1">Overview</h1>
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<div id="body1529658735911"><div class="section" id="admin_guide_000038__section71293442312"><h4 class="sectiontitle">Overview</h4><p id="admin_guide_000038__p17497184414128">Log in to <span id="admin_guide_000038__text154091129192818">MRS</span> Manager, click <strong id="admin_guide_000038__b2379191181014">Cluster</strong>, click the name of the desired cluster, and choose <strong id="admin_guide_000038__b15387141161012">Service</strong> > <strong id="admin_guide_000038__b17388151131016">KrbServer</strong>. On the displayed page, click <strong id="admin_guide_000038__b6389181141010">Instance</strong>. The displayed instance management page contains the function area and role instance list.</p>
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</div>
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<div class="section" id="admin_guide_000038__section4371164773515"><h4 class="sectiontitle">Functional Area</h4><p id="admin_guide_000038__p3299249463">After selecting the instances to be operated in the function area, you can maintain and manage the role instances, such as starting or stopping the instances. <a href="#admin_guide_000038__table17943743105914">Table 1</a> shows the main operations.</p>
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<div class="tablenoborder"><a name="admin_guide_000038__table17943743105914"></a><a name="table17943743105914"></a><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000038__table17943743105914" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Instance maintenance and management</caption><thead align="left"><tr id="admin_guide_000038__row294464319592"><th align="left" class="cellrowborder" valign="top" width="35%" id="mcps1.3.2.3.2.3.1.1"><p id="admin_guide_000038__p1794416433599">UI Portal</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="65%" id="mcps1.3.2.3.2.3.1.2"><p id="admin_guide_000038__p39441543165914">Description</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_000038__row4511952133818"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p75311529383"><strong id="admin_guide_000038__b949812542162">Start Instance</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p511718137438">Start a specified instance in the cluster. You can start a role instance in the <strong id="admin_guide_000038__b1537813422114319">Not Started</strong>, <strong id="admin_guide_000038__b1958405222114319">Stop Failed</strong>, or <strong id="admin_guide_000038__b376328738114319">Startup Failed</strong> state to use the role instance.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row7873145384011"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p8873155334016"><span class="menucascade" id="admin_guide_000038__menucascade175562163587"><b><span class="uicontrol" id="admin_guide_000038__uicontrol755715165589">More > Stop Instance</span></b></span></p>
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</td>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p1730074824312">Stop a specified instance in the cluster. You can stop a role instance that is no longer used or is abnormal.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row13559154104113"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p13559542416"><span class="menucascade" id="admin_guide_000038__menucascade13759124775811"><b><span class="uicontrol" id="admin_guide_000038__uicontrol107591447125813">More > Restart Instance</span></b></span></p>
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</td>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p5559164204111">Restart a specified instance in the cluster. You can restart an abnormal role instance to restore it.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row11377930205112"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p13787308515"><span class="menucascade" id="admin_guide_000038__menucascade2070847770114319"><b><span class="uicontrol" id="admin_guide_000038__uicontrol1383932755114319">More > Instance Rolling Restart</span></b></span></p>
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</td>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p12378530135112">Restart a specified instance in the cluster without interrupting services. For details about the parameter settings, see <a href="admin_guide_000012.html">Performing a Rolling Restart of a Cluster</a>.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row163986313819"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p143981233389"><span class="menucascade" id="admin_guide_000038__menucascade56393414382"><b><span class="uicontrol" id="admin_guide_000038__uicontrol3640041382">More > Decommission/Recommission</span></b></span></p>
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</td>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p16398231386">Recommission or decommission a specified instance in the cluster to change the service availability status of the service. For details, see <a href="admin_guide_000040.html">Decommissioning and Recommissioning an Instance</a>.</p>
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<div class="note" id="admin_guide_000038__note6951145517102"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="admin_guide_000038__p163419454714">Only the role DataNode in HDFS, role NodeManager in Yarn, and role RegionServer in HBase support the recommissioning and decommissioning functions.</p>
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</div></div>
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</td>
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</tr>
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<tr id="admin_guide_000038__row1461468133320"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p417753795413"><em id="admin_guide_000038__i959841011242">Desired instance</em> > <strong id="admin_guide_000038__b109957241225">More</strong> > <strong id="admin_guide_000038__b11716132712224">Synchronize Configuration</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p373894591519">If the <strong id="admin_guide_000038__b417823010114319">Configuration Status</strong> of a role instance is <strong id="admin_guide_000038__b1249982681114319">Expired</strong>, the role instance has not been restarted after the configuration is modified, and the new configuration is saved only on <span id="admin_guide_000038__text135148383420">MRS</span> Manager. In this case, use this function to deliver the new configuration to the specified instance.</p>
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<div class="note" id="admin_guide_000038__note7256710125716"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="admin_guide_000038__ul33792165587"><li id="admin_guide_000038__li153791716185811">After synchronizing the role instance configuration, you need to restart the role instance whose configuration has expired. The role instance is unavailable during the restart.</li><li id="admin_guide_000038__li063891813585">After the synchronization is complete, restart the instance for the configuration to take effect.</li></ul>
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</div></div>
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</td>
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</tr>
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<tr id="admin_guide_000038__row1156616411331"><td class="cellrowborder" valign="top" width="35%" headers="mcps1.3.2.3.2.3.1.1 "><p id="admin_guide_000038__p1177133711543"><em id="admin_guide_000038__i16782022417">Desired instance</em> > <strong id="admin_guide_000038__b5422414241">Instance Configurations</strong></p>
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<td class="cellrowborder" valign="top" width="65%" headers="mcps1.3.2.3.2.3.1.2 "><p id="admin_guide_000038__p88321948185910">For details, see <a href="admin_guide_000043.html">Managing Instance Configurations</a>.</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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<p id="admin_guide_000038__p382465751720">You can filter instances based on the role they belong to or their running status in the function area.</p>
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<div class="note" id="admin_guide_000038__note13573161141815"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000038__p15741619185">Click <strong id="admin_guide_000038__b1041220393546">Advanced Search</strong> to search for specified instances by specifying other filter criteria, such as <strong id="admin_guide_000038__b940429172715">Host Name</strong>, <strong id="admin_guide_000038__b12996713132718">Management IP Address</strong>, <strong id="admin_guide_000038__b1976514219278">Business IP Address</strong>, or <strong id="admin_guide_000038__b7651143202714">Instance Groups</strong>.</p>
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</div></div>
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</div>
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<div class="section" id="admin_guide_000038__section16462136153511"><h4 class="sectiontitle">Role Instance List</h4><p id="admin_guide_000038__p161071923172115">The role instance list contains the instances of all roles in the cluster. The list displays the running status, configuration status, hosts, and related IP addresses of each instance.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000038__table5436305211130" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Instance running status</caption><thead align="left"><tr id="admin_guide_000038__row5367935711130"><th align="left" class="cellrowborder" valign="top" width="25%" id="mcps1.3.3.3.2.3.1.1"><p id="admin_guide_000038__p1832075711147"><strong id="admin_guide_000038__b14517416175313">Status</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="75%" id="mcps1.3.3.3.2.3.1.2"><p id="admin_guide_000038__p758638611147"><strong id="admin_guide_000038__b154415177530">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_000038__row3709936911130"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p4661269211147"><strong id="admin_guide_000038__b17224219185319">Normal</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p1753172211147">Indicates that the instance is running properly.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row4603969911130"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p2994160011147"><strong id="admin_guide_000038__b699614319305">Faulty</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p935056711147">Indicates that the instance cannot run properly.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row76708168226"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p106707161228"><strong id="admin_guide_000038__b7691656131116">Decommissioned</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p1867091611224">Indicates that the instance is out of service.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row1372168011130"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p151745211147"><strong id="admin_guide_000038__b15655339171016">Not started</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p5580480111147">Indicates that the instance is stopped.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row4621349511130"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p1372857411147"><strong id="admin_guide_000038__b674714210102">Unknown</strong></p>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p3827268911147">Indicates that the initial status of the instance cannot be detected.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row172941820569"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p329520201764"><strong id="admin_guide_000038__b175631446111016">Starting</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p1729572012617">Indicates that the instance is being started.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row18402152010612"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p164023201363"><strong id="admin_guide_000038__b133361417201212">Stopping</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p13402142010615">Indicates that the instance is being stopped.</p>
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<tr id="admin_guide_000038__row75402023182913"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p3540142352912"><strong id="admin_guide_000038__b1147453318">Restoring</strong></p>
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</td>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p105401423102911">Indicates that an exception may occur in the instance and the instance is being automatically rectified.</p>
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<tr id="admin_guide_000038__row19436757183016"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p743635783015"><strong id="admin_guide_000038__b1154246151319">Decommissioning</strong></p>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p043665711306">Indicates that the instance is being decommissioned.</p>
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</td>
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</tr>
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<tr id="admin_guide_000038__row18970151118310"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p6970101173113"><strong id="admin_guide_000038__b1673932413132">Recommissioning</strong></p>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p16970121153114">Indicates that the instance is being recommissioned.</p>
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<tr id="admin_guide_000038__row452862012615"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p10528162011619"><strong id="admin_guide_000038__b371025932710">Failed to start</strong></p>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p155289205612">Indicates that the service fails to be started.</p>
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<tr id="admin_guide_000038__row1565412012618"><td class="cellrowborder" valign="top" width="25%" headers="mcps1.3.3.3.2.3.1.1 "><p id="admin_guide_000038__p1965413201667"><strong id="admin_guide_000038__b10833175112816">Failed to stop</strong></p>
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<td class="cellrowborder" valign="top" width="75%" headers="mcps1.3.3.3.2.3.1.2 "><p id="admin_guide_000038__p2065414204617">Indicates that the service fails to be stopped.</p>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section" id="admin_guide_000038__section27947419103"><h4 class="sectiontitle">Instance Details</h4><p id="admin_guide_000038__p2519928201914">You can click an instance name to go to the instance details page and view the basic information, configuration file, instance logs, and monitoring metric reports of the instance.</p>
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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_000037.html">Instance Management</a></div>
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