forked from docs/doc-exports
Yang, Tong
3b1f73dece
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>
96 lines
14 KiB
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96 lines
14 KiB
HTML
<a name="alm_12043"></a><a name="alm_12043"></a>
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<h1 class="topictitle1">ALM-12043 DNS Parsing Duration Exceeds the Threshold</h1>
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<div id="body8662426"><div class="section" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_section19482731"><h4 class="sectiontitle">Description</h4><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p37373040">The system checks the DNS parsing duration every 30 seconds. This alarm is generated when the DNS parsing duration exceeds the threshold (the default threshold is 20,000 ms) for multiple times (the default value is <strong id="alm_12043__b667985632718">2</strong>).</p>
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<p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p813045">You can change the threshold by choosing <strong id="alm_12043__b1320720589275">System</strong> > <strong id="alm_12043__b2020745832716">Threshold Configuration</strong> > <strong id="alm_12043__b172081058172716">Device</strong> > <strong id="alm_12043__b420865818276">Host</strong> > <strong id="alm_12043__b15209158162712">Network Status</strong> > <strong id="alm_12043__b1020985812718">DNS Resolution Duration</strong> > <strong id="alm_12043__b1020955816277">DNS Resolution Duration</strong>.</p>
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<p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p7317409">This alarm is cleared when <strong id="alm_12043__b12834155910274">hit number</strong> is <strong id="alm_12043__b1583565914270">1</strong> and the DNS resolution duration is less than or equal to the threshold. This alarm is cleared when <strong id="alm_12043__b2083515593278">hit number</strong> is not <strong id="alm_12043__b98361159202717">1</strong> and the DNS resolution duration is less than or equal to 90% of the threshold.</p>
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</div>
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<div class="section" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_section41126851"><h4 class="sectiontitle">Attribute</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_table55839258" frame="border" border="1" rules="all"><thead align="left"><tr id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_row376394"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p30487925">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p53602865">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p46864805">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_row37952890"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p54285272">12043</p>
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</td>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.2 "><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p35030886">Major</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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p18929484">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_section34597344"><h4 class="sectiontitle">Parameters</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_table56893235" frame="border" border="1" rules="all"><thead align="left"><tr id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_row18924856"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p56518356">Parameter</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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p14584084">Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_row40460128"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p56044961">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p43348031">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_row54587964"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p59548976">RoleName</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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p58737715">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_row58877395"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p4339699">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_p15971319">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_12043__en-us_topic_0191813958_en-us_topic_0087039385_section42940641"><h4 class="sectiontitle">Impact on the System</h4><ul id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ul18608456"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li33258376">Kerberos-based secondary authentication is slow. </li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li30889933">The ZooKeeper service is abnormal.</li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li9573942">The node is faulty.</li></ul>
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</div>
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<div class="section" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_section50921457"><h4 class="sectiontitle">Possible Causes</h4><ul id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ul37291877"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li82581">The node is configured with the DNS client. </li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li743229">The node is equipped with the DNS server and the DNS server is started.</li></ul>
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</div>
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<div class="section" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_section55639936"><h4 class="sectiontitle">Procedure</h4><p class="tableheading" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p60201573"><strong id="alm_12043__b1683762282812">Check whether the node is configured with the DNS client.</strong></p>
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<ol id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ol64382832112642"><li id="alm_12043__en-us_topic_0191813958_li1487713813414"><span>Go to the MRS cluster details page and choose <strong id="alm_12043__b353122162814">Alarms</strong>.</span></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li24110748112614"><span>View the alarm details to obtain the value of the <strong id="alm_12043__b17433112482813">HostName</strong> field in <strong id="alm_12043__b34341247287">Location</strong>.</span></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li6813534112614"><span>Use PuTTY to log in to the node for which the alarm is generated as user <strong id="alm_12043__b21894258288">root</strong>.</span></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li2066296112614"><span>Run the <strong id="alm_12043__b18296122618281">cat /etc/resolv.conf</strong> command to check whether the DNS client is installed.</span><p><p class="litext" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p15025397112614">If information similar to the following is displayed, the DNS client is installed and started:</p>
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<pre class="screen" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_screen1010852112614">namesever 10.2.3.4
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namesever 10.2.3.4</pre>
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<ul class="subitemlist" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ul30055750112614"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li14770197112614">If yes, go to <a href="#alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li29935381112614">5</a>.</li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li55535310112614">If no, go to <a href="#alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li39250560112614">7</a>.</li></ul>
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</p></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li29935381112614"><a name="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li29935381112614"></a><a name="en-us_topic_0191813958_en-us_topic_0087039385_li29935381112614"></a><span>Run the <strong id="alm_12043__b159743822816">vi /etc/resolv.conf</strong> command to comment out the following content using the number signs (#) and save the file: </span><p><pre class="screen" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_screen33152315112614"># namesever 10.2.3.4
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# namesever 10.2.3.4</pre>
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</p></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li61581649112614"><span>Check whether this alarm is cleared after 5 minutes.</span><p><ul class="subitemlist" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ul45499509112614"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li982974112614">If yes, no further action is required.</li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li12512041112614">If no, go to <a href="#alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li39250560112614">7</a>.</li></ul>
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</p></li></ol>
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<p class="tableheading" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p6842405112614"><strong id="alm_12043__b13633548162812">Check whether the node is equipped with the DNS server and the DNS server is started.</strong></p>
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<ol start="7" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ol3542552311272"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li39250560112614"><a name="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li39250560112614"></a><a name="en-us_topic_0191813958_en-us_topic_0087039385_li39250560112614"></a><span>Run the <strong id="alm_12043__b74325496284">service named status</strong> command to check whether the DNS service is installed on the node.</span><p><p class="litext" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p22057640112614">If information similar to the following is displayed, the DNS server is installed and started: </p>
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<pre class="screen" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_screen64301038112614">Checking for nameserver BIND
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version: 9.6-ESV-R7-P4
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CPUs found: 8
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worker threads: 8
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number of zones: 17
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debug level: 0
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xfers running: 0
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xfers deferred: 0
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soa queries in progress: 0
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query logging is ON
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recursive clients: 4/0/1000
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tcp clients: 0/100
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server is up and running</pre>
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<ul class="subitemlist" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ul26730794112614"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li41001612112614">If yes, go to <a href="#alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li25178791112614">8</a>.</li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li32796250112614">If no, go to <a href="#alm_12043__en-us_topic_0191813958_li572522141314">10</a>.</li></ul>
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</p></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li25178791112614"><a name="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li25178791112614"></a><a name="en-us_topic_0191813958_en-us_topic_0087039385_li25178791112614"></a><span>Run the <strong id="alm_12043__b192292562912">service named stop</strong> command to stop the DNS server.</span></li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li4356911112614"><span>Check whether this alarm is cleared after 5 minutes.</span><p><ul class="subitemlist" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_ul43136022112614"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li25282530112614">If yes, no further action is required.</li><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_li34619053112614">If no, go to <a href="#alm_12043__en-us_topic_0191813958_li572522141314">10</a>.</li></ul>
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</p></li><li id="alm_12043__en-us_topic_0191813958_li572522141314"><a name="alm_12043__en-us_topic_0191813958_li572522141314"></a><a name="en-us_topic_0191813958_li572522141314"></a><span>Collect fault information.</span><p><ol type="a" id="alm_12043__en-us_topic_0191813958_en-us_topic_0191813935_ol6089206913036"><li id="alm_12043__en-us_topic_0191813958_en-us_topic_0191813935_li4478836213036">On MRS Manager, choose <span class="menucascade" id="alm_12043__menucascade139211142295"><b><span class="uicontrol" id="alm_12043__uicontrol339116147294">System</span></b> > <b><span class="uicontrol" id="alm_12043__uicontrol11392614162914">Export Log</span></b></span>.</li><li id="alm_12043__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>
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</p></li></ol>
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</div>
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<div class="section" id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_section30997384"><h4 class="sectiontitle">Reference</h4><p id="alm_12043__en-us_topic_0191813958_en-us_topic_0087039385_p25166264">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_0241.html">Alarm Reference (Applicable to Versions Earlier Than MRS 3.x)</a></div>
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</div>
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</div>
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