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doc-exports/docs/mrs/umn/alm_18004.html
Yang, Tong 3b1f73dece MRS UMN 2.0.38.SP20 version 
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Yang, Tong <yangtong2@huawei.com>
Co-committed-by: Yang, Tong <yangtong2@huawei.com>
2022-12-13 12:03:34 +00:00

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<a name="alm_18004"></a><a name="alm_18004"></a>
<h1 class="topictitle1">ALM-18004 NodeManager Disk Usability Ratio Is Lower Than the Threshold</h1>
<div id="body1604372019915"><div class="section" id="alm_18004__en-us_topic_0191813913_section53704644"><h4 class="sectiontitle">Description</h4><p id="alm_18004__p237013820211">The system checks the available disk space of each NodeManager node every 30 seconds and compares the disk availability rate with the threshold. A default threshold range is provided for the <strong id="alm_18004__b12954035357">NodeManager Disk Usability Ratio</strong>. This alarm is generated when the system detects that the actual <strong id="alm_18004__b187781817153513">NodeManager Disk Usability Ratio</strong> is lower than the threshold.</p>
<p id="alm_18004__p1437088152119">This alarm is automatically cleared when the value of <strong id="alm_18004__b430214287353">NodeManager Disk Usability Ratio</strong> is greater than the threshold.</p>
</div>
<div class="section" id="alm_18004__en-us_topic_0191813913_section13579756"><h4 class="sectiontitle">Attribute</h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="alm_18004__en-us_topic_0191813913_table8146160" frame="border" border="1" rules="all"><thead align="left"><tr id="alm_18004__en-us_topic_0191813913_row10966323"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="alm_18004__en-us_topic_0191813913_p15856984">Alarm ID</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.2"><p id="alm_18004__en-us_topic_0191813913_p9347313">Alarm Severity</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.3"><p id="alm_18004__en-us_topic_0191813913_p18934887">Auto Clear</p>
</th>
</tr>
</thead>
<tbody><tr id="alm_18004__en-us_topic_0191813913_row57330849"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="alm_18004__en-us_topic_0191813913_p13287175">18004</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.2 "><p id="alm_18004__en-us_topic_0191813913_p2519427">Major</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.3 "><p id="alm_18004__en-us_topic_0191813913_p2747002">Yes</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="alm_18004__en-us_topic_0191813913_section55108945"><h4 class="sectiontitle">Parameters</h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="alm_18004__en-us_topic_0191813913_table21180630" frame="border" border="1" rules="all"><thead align="left"><tr id="alm_18004__en-us_topic_0191813913_row54284994"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="alm_18004__en-us_topic_0191813913_p35008393">Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.2"><p id="alm_18004__en-us_topic_0191813913_p17107576">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="alm_18004__en-us_topic_0191813913_row43536440"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_18004__en-us_topic_0191813913_p36790769">ServiceName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_18004__en-us_topic_0191813913_p27262282">Specifies the service for which the alarm is generated.</p>
</td>
</tr>
<tr id="alm_18004__en-us_topic_0191813913_row44033946"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_18004__en-us_topic_0191813913_p9979846">RoleName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_18004__en-us_topic_0191813913_p3061223">Specifies the role for which the alarm is generated.</p>
</td>
</tr>
<tr id="alm_18004__en-us_topic_0191813913_row27551015"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_18004__en-us_topic_0191813913_p17039762">HostName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_18004__en-us_topic_0191813913_p38043494">Specifies the host for which the alarm is generated.</p>
</td>
</tr>
<tr id="alm_18004__en-us_topic_0191813913_row6847126"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_18004__en-us_topic_0191813913_p17746329">Trigger condition</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_18004__en-us_topic_0191813913_p28166553">Specifies the threshold for triggering the alarm.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="alm_18004__en-us_topic_0191813913_section26218460"><h4 class="sectiontitle">Impact on the System</h4><ul id="alm_18004__en-us_topic_0191813913_ul66898301"><li id="alm_18004__en-us_topic_0191813913_li65213800">The NodeManager node whose disk availability rate is lower than the threshold may fail to provide the Yarn service.</li><li id="alm_18004__en-us_topic_0191813913_li50053294">The number of containers decreases, so the cluster performance may deteriorate.</li></ul>
</div>
<div class="section" id="alm_18004__en-us_topic_0191813913_section34639550"><h4 class="sectiontitle">Possible Causes</h4><ul id="alm_18004__en-us_topic_0191813913_ul27784979"><li id="alm_18004__en-us_topic_0191813913_li48738220">The disk space of the host where the NodeManager node resides is insufficient.</li><li id="alm_18004__en-us_topic_0191813913_li35990804">User <strong id="alm_18004__b6461857171817">omm</strong> does not have the permission to access a local directory on the NodeManager node.</li></ul>
</div>
<div class="section" id="alm_18004__en-us_topic_0191813913_section43320496"><h4 class="sectiontitle">Procedure</h4><ol id="alm_18004__en-us_topic_0191813913_ol8416164734914"><li id="alm_18004__en-us_topic_0191813913_li572522141314"><span>Collect fault information.</span><p><ol type="a" id="alm_18004__en-us_topic_0191813913_en-us_topic_0191813935_ol6089206913036"><li id="alm_18004__en-us_topic_0191813913_en-us_topic_0191813935_li4478836213036">On MRS Manager, choose <span class="menucascade" id="alm_18004__menucascade567430141916"><b><span class="uicontrol" id="alm_18004__uicontrol1767412018199">System</span></b> &gt; <b><span class="uicontrol" id="alm_18004__uicontrol2067418010198">Export Log</span></b></span>.</li><li id="alm_18004__li18574327401">Contact technical support engineers for help. For details, see <a href="https://docs.otc.t-systems.com/en-us/public/learnmore.html" target="_blank" rel="noopener noreferrer">technical support</a>.</li></ol>
</p></li></ol>
</div>
<div class="section" id="alm_18004__en-us_topic_0191813913_section54340147"><h4 class="sectiontitle">Reference</h4><p id="alm_18004__en-us_topic_0191813913_p19546120">None</p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_0241.html">Alarm Reference (Applicable to Versions Earlier Than MRS 3.x)</a></div>
</div>
</div>
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