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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>
82 lines
8.8 KiB
HTML
82 lines
8.8 KiB
HTML
<a name="ALM-45585"></a><a name="ALM-45585"></a>
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<h1 class="topictitle1">ALM-45585 IoTDB Service Unavailable</h1>
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<div id="body0000001154514923"><div class="section" id="ALM-45585__section13447226"><h4 class="sectiontitle">Description</h4><p id="ALM-45585__p13518023133811">The system checks the IoTDB service status every 300 seconds. This alarm is generated when the IoTDB service is unavailable. This alarm is cleared when the IoTDB service recovers.</p>
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</div>
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<div class="section" id="ALM-45585__section53916176"><h4 class="sectiontitle">Attribute</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-45585__table33817547" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-45585__row8931076"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="ALM-45585__p52328576">Alarm ID</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.2"><p id="ALM-45585__p10756297">Alarm Severity</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.3"><p id="ALM-45585__p65953734">Auto Clear</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="ALM-45585__row40652256"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="ALM-45585__p8364329184016">45585</p>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.2 "><p id="ALM-45585__p1236402914406">Critical</p>
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</td>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.3 "><p id="ALM-45585__p1536482924019">Yes</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>
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<div class="section" id="ALM-45585__section15483537"><h4 class="sectiontitle">Parameters</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-45585__table31358724" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-45585__row33518103"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="ALM-45585__p30611809">Name</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.2"><p id="ALM-45585__p63637484">Meaning</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="ALM-45585__row163311621185116"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-45585__p17935380415">Source</p>
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</td>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-45585__p187931338134115">Specifies the cluster for which the alarm is generated.</p>
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</td>
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</tr>
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<tr id="ALM-45585__row54362592"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-45585__p41293795">ServiceName</p>
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</td>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-45585__p56463136">Specifies the service for which the alarm is generated.</p>
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</td>
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</tr>
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<tr id="ALM-45585__row38406179"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-45585__p23892775">RoleName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-45585__p56266616">Specifies the role for which the alarm is generated.</p>
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</td>
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</tr>
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<tr id="ALM-45585__row36637496"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-45585__p14847206">HostName</p>
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</td>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-45585__p61773077">Specifies the host for which the alarm is generated.</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>
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<div class="section" id="ALM-45585__section5134112"><h4 class="sectiontitle">Impact on the System</h4><p id="ALM-45585__p42871020143312">Users cannot use the IoTDB service properly.</p>
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</div>
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<div class="section" id="ALM-45585__section46207013"><h4 class="sectiontitle">Possible Causes</h4><ul id="ALM-45585__ul496375218610"><li id="ALM-45585__li49632525615">The KrbServer service is abnormal.</li><li id="ALM-45585__li14963135217616">More than 50% of IoTDBServer instances are faulty.</li></ul>
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</div>
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<div class="section" id="ALM-45585__section02555126619"><h4 class="sectiontitle">Procedure</h4><p class="tableheading" id="ALM-45585__p135760113337"><strong id="ALM-45585__b103361324101112">Check whether the KrbServer service on which the IoTDB depends is abnormal.</strong></p>
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<ol id="ALM-45585__ol85761615337"><li id="ALM-45585__li1957661133312"><span>On <span id="ALM-45585__text34789336432">MRS</span> Manager, choose <strong id="ALM-45585__b17899365375558">O&M</strong> > <strong id="ALM-45585__b15128174795558">Alarm</strong> > <strong id="ALM-45585__b11877677345558">Alarms</strong>.</span></li><li id="ALM-45585__li1957612118337"><span>In the alarm list, check whether ALM-25500 KrbServer Service Unavailable exists.</span><p><ul id="ALM-45585__ul8576101113318"><li id="ALM-45585__li657618163314">If yes, go to <a href="#ALM-45585__li1857611153310">3</a>.</li><li id="ALM-45585__li7576513337">If no, go to <a href="#ALM-45585__li1336018269214">5</a>.</li></ul>
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</p></li><li id="ALM-45585__li1857611153310"><a name="ALM-45585__li1857611153310"></a><a name="li1857611153310"></a><span>Handle the alarm by referring to "ALM-25500 KrbServer Service Unavailable."</span></li><li id="ALM-45585__li1457618110336"><span>After ALM-25500 is cleared, wait a few minutes and check whether the alarm HetuServer Service Unavailable is cleared.</span><p><ul id="ALM-45585__ul9576719335"><li id="ALM-45585__li14576151203317">If yes, no further action is required.</li><li id="ALM-45585__li0576612336">If no, go to <a href="#ALM-45585__li1336018269214">5</a>.</li></ul>
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</p></li></ol>
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<p id="ALM-45585__p33511026132117"><strong id="ALM-45585__b1968072812115">Check whether IoTDBServer instances are faulty.</strong></p>
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<ol start="5" id="ALM-45585__ol3360126142112"><li id="ALM-45585__li1336018269214"><a name="ALM-45585__li1336018269214"></a><a name="li1336018269214"></a><span>On <span id="ALM-45585__text2915278231">MRS</span> Manager, choose <strong id="ALM-45585__b85591112182715">Cluster</strong> > <em id="ALM-45585__i11565012192714">Name of the desired cluster</em> > <strong id="ALM-45585__b1656531272712">Service</strong> > <strong id="ALM-45585__b156571292711">IoTDB</strong> > <strong id="ALM-45585__b856521220272">Instance</strong>.</span></li><li id="ALM-45585__li836014262217"><span>Check whether the percentage of faulty IoTDBServer instances exceeds 50%. If yes, restart the faulty IoTDBServer instances and check whether the status is restored.</span><p><ul id="ALM-45585__ul193601526172115"><li id="ALM-45585__li10360226172119">If yes, no further action is required.</li><li id="ALM-45585__li103603268211">If no, go to <a href="#ALM-45585__li4749473185459">7</a>.</li></ul>
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</p></li></ol>
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<p class="tableheading" id="ALM-45585__p3538354385459"><strong id="ALM-45585__b438943612115">Collect the fault information.</strong></p>
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<ol start="7" id="ALM-45585__ol4790308885524"><li id="ALM-45585__li4749473185459"><a name="ALM-45585__li4749473185459"></a><a name="li4749473185459"></a><span>On <span id="ALM-45585__text141857916238">MRS</span> Manager, choose <strong id="ALM-45585__b386141714330">O&M</strong>. In the navigation pane on the left, choose <strong id="ALM-45585__b108821719339">Log</strong> > <strong id="ALM-45585__b989121720335">Download</strong>.</span></li><li id="ALM-45585__li2648019085459"><span>Expand the <strong id="ALM-45585__b1985470314">Service</strong> drop-down list, select <strong id="ALM-45585__b69824710318">IoTDB</strong> for the target cluster, and click <strong id="ALM-45585__b19824715315">OK</strong>.</span></li><li id="ALM-45585__li3699511985459"><span>Click <span><img id="ALM-45585__image104601319175315" src="en-us_image_0000001582927517.png"></span> in the upper right corner, and set <strong id="ALM-45585__b111191656182613">Start Date</strong> and <strong id="ALM-45585__b16120756102619">End Date</strong> for log collection to 30 minutes ahead of and after the alarm generation time respectively. Then, click <strong id="ALM-45585__b31201656142618">Download</strong>.</span></li><li id="ALM-45585__li4381466885459"><span>Contact <span id="ALM-45585__text76451282402">O&M personnel</span> and provide the collected logs.</span></li></ol>
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</div>
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<div class="section" id="ALM-45585__section169311343318"><h4 class="sectiontitle">Alarm Clearing</h4><p id="ALM-45585__p754913417333">This alarm is automatically cleared after the fault is rectified.</p>
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</div>
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<div class="section" id="ALM-45585__section51780573"><h4 class="sectiontitle">Related Information</h4><p id="ALM-45585__p54528917">None</p>
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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="mrs_01_1298.html">Alarm Reference (Applicable to MRS 3.x)</a></div>
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</div>
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</div>
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