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Yang, Tong
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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>
86 lines
10 KiB
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86 lines
10 KiB
HTML
<a name="ALM-24006"></a><a name="ALM-24006"></a>
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<h1 class="topictitle1">ALM-24006 Heap Memory Usage of Flume Server Exceeds the Threshold</h1>
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<div id="body47403819"><div class="section" id="ALM-24006__section61130422"><h4 class="sectiontitle">Description</h4><p id="ALM-24006__p14504164">The system checks the heap memory usage of the Flume service every 60 seconds. This alarm is generated when the heap memory usage of the Flume instance exceeds the threshold (95% of the maximum memory) for 10 consecutive times. This alarm is cleared when the heap memory usage is less than the threshold.</p>
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<div class="section" id="ALM-24006__section13302888"><h4 class="sectiontitle">Attribute</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-24006__table33986641" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-24006__row13879140"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="ALM-24006__p50468531">Alarm ID</p>
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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-24006__p61419199">Alarm Severity</p>
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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-24006__p8899183">Auto Clear</p>
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<tbody><tr id="ALM-24006__row49745195"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="ALM-24006__p2829020">24006</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-24006__p27824106">Major</p>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.3 "><p id="ALM-24006__p39160124">Yes</p>
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<div class="section" id="ALM-24006__section52617132"><h4 class="sectiontitle">Parameters</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-24006__table17853499" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-24006__row18143824"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="ALM-24006__p60363621">Name</p>
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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-24006__p57615147">Meaning</p>
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<tbody><tr id="ALM-24006__row13401184712152"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-24006__p13858113752316">Source</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-24006__p187931338134115">Specifies the cluster for which the alarm is generated.</p>
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<tr id="ALM-24006__row36315337"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-24006__p39123317">ServiceName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-24006__p28465328">Specifies the service for which the alarm is generated.</p>
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<tr id="ALM-24006__row54861362"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-24006__p37226997">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-24006__p40562973">Specifies the role for which the alarm is generated.</p>
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<tr id="ALM-24006__row29522441"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-24006__p66118565">HostName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-24006__p20557292">Specifies the host for which the alarm is generated.</p>
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<tr id="ALM-24006__row50797907"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="ALM-24006__p20989801">Trigger Condition</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="ALM-24006__p22452291">Specifies the threshold for triggering the alarm.</p>
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<div class="section" id="ALM-24006__section3792148"><h4 class="sectiontitle">Impact on the System</h4><p id="ALM-24006__p6696265">Heap memory overflow may cause service breakdown.</p>
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<div class="section" id="ALM-24006__section34129336"><h4 class="sectiontitle">Possible Causes</h4><p id="ALM-24006__p5526629">The heap memory of the Flume instance is overused or the heap memory is inappropriately allocated.</p>
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<div class="section" id="ALM-24006__section38728568"><h4 class="sectiontitle">Procedure</h4><p id="ALM-24006__p45003772"><strong id="ALM-24006__b19090373112431">Check the heap memory usage.</strong></p>
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<ol id="ALM-24006__ol2380770"><li id="ALM-24006__li21426936"><span>Log in to FusionInsight Manager and choose <strong id="ALM-24006__b13657141155211">O&M</strong>. In the navigation pane on the left, choose <strong id="ALM-24006__b156677155215">Alarm</strong> > <strong id="ALM-24006__b66671018529">Alarms</strong>. On the page that is displayed, locate the row containing <strong id="ALM-24006__b1966813145216">Flume Heap Memory Usage Exceeds the Threshold</strong>, and view the <strong id="ALM-24006__b2011614417010">Location</strong> information. Check the name of the host for which the alarm is generated.</span></li><li id="ALM-24006__li58624704"><span>On FusionInsight Manager, choose <strong id="ALM-24006__b19979458835914">Cluster</strong> > <em id="ALM-24006__i19620830935914">Name of the target cluster</em> > <strong id="ALM-24006__b30049721835914">Services</strong> > <strong id="ALM-24006__b137406406535914">Flume</strong>. On the page that is displayed, click the <strong id="ALM-24006__b50737462235914">Instance</strong> tab. On the displayed tab page, select the role corresponding to the host name for which the alarm is generated and select <strong id="ALM-24006__b44860752235914">Customize</strong> from the drop-down list in the upper right corner of the chart area. Choose <strong id="ALM-24006__b112028367835914">Agent</strong> and select <strong id="ALM-24006__b65714406635914">Flume Heap Memory Resource Percentage</strong>. Then, click <strong id="ALM-24006__b144332720535914">OK</strong>.</span></li><li id="ALM-24006__li57860289"><span>Check whether the heap memory used by Flume reaches the threshold (95% of the maximum heap memory by default).</span><p><ul id="ALM-24006__ul50980558"><li id="ALM-24006__li56171838">If yes, go to <a href="#ALM-24006__li11521246145513">4</a>.</li><li id="ALM-24006__li53625048">If no, go to <a href="#ALM-24006__li42224042151734">6</a>.</li></ul>
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</p></li><li id="ALM-24006__li11521246145513"><a name="ALM-24006__li11521246145513"></a><a name="li11521246145513"></a><span>On FusionInsight Manager, choose <strong id="ALM-24006__b7181125591">Cluster</strong> > <em id="ALM-24006__i14335101211913">Name of the desired cluster</em> > <strong id="ALM-24006__b186019595918">Service</strong> > <strong id="ALM-24006__b11749723108">Flume</strong> > <strong id="ALM-24006__b19213166161015">Configuration</strong>. On the page that is displayed, click <strong id="ALM-24006__b6777653111211">All Configurations</strong> and choose <strong id="ALM-24006__b6744125718122">Flume</strong> > <strong id="ALM-24006__b55807598124">System</strong>. Set <strong id="ALM-24006__b121113188735914">-Xmx</strong> in the <strong id="ALM-24006__b118498144735914">GC_OPTS</strong> parameter to a larger value based on site requirements and save the configuration.</span><p><div class="note" id="ALM-24006__note1572143455414"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-24006__p65732349545">If this alarm is generated, the heap memory configured for the Flume server is insufficient for data transmission. You are advised to change the heap memory to: Channel capacity x Maximum size of a single data record x Number of channels. Note that the value of <strong id="ALM-24006__b106954347335914">xmx</strong> cannot exceed the remaining memory of the node.</p>
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</div></div>
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</p></li><li id="ALM-24006__li35301418"><span>Restart the affected services or instances and check whether the alarm is cleared.</span><p><ul id="ALM-24006__ul49277313"><li id="ALM-24006__li40842634">If yes, no further action is required.</li><li id="ALM-24006__li32039392">If no, go to <a href="#ALM-24006__li42224042151734">6</a>.</li></ul>
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</p></li></ol>
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<p id="ALM-24006__p45053948"><strong id="ALM-24006__b35235717112450">Collect the fault information.</strong></p>
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<ol start="6" id="ALM-24006__ol41031367112456"><li id="ALM-24006__li42224042151734"><a name="ALM-24006__li42224042151734"></a><a name="li42224042151734"></a><span>On FusionInsight Manager, choose <strong id="ALM-24006__b551221885416">O&M</strong>. In the navigation pane on the left, choose <strong id="ALM-24006__b051812182543">Log</strong> > <strong id="ALM-24006__b8519718145417">Download</strong>.</span></li><li id="ALM-24006__li28093597"><span>Expand the <strong id="ALM-24006__b1033220221250">Service</strong> drop-down list, and select <strong id="ALM-24006__b4341132282513">Flume</strong> for the target cluster.</span></li><li id="ALM-24006__li51515784"><span>Click <span><img id="ALM-24006__image104601319175315" src="en-us_image_0263895532.png"></span> in the upper right corner, and set <strong id="ALM-24006__b1061613261250">Start Date</strong> and <strong id="ALM-24006__b161762642515">End Date</strong> for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click <strong id="ALM-24006__b2617132611258">Download</strong>.</span></li><li id="ALM-24006__li60988879"><span>Contact <span id="ALM-24006__text859143510257">O&M personnel</span> and provide the collected logs.</span></li></ol>
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<div class="section" id="ALM-24006__section169311343318"><h4 class="sectiontitle">Alarm Clearing</h4><p id="ALM-24006__p754913417333">This alarm is automatically cleared after the fault is rectified.</p>
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<div class="section" id="ALM-24006__section53362350"><h4 class="sectiontitle">Related Information</h4><p id="ALM-24006__p7522741">None</p>
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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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