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Solr plugin crashes mysql (memory full)

Discussion in 'General Discussion' started by bloupbloup, Aug 27, 2017.

  1. bloupbloup

    bloupbloup Registered

    Mar 10, 2014
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    I wanted to mention I had my MariaDB server crashing and restarting those last days because of the Solr plugin. I fixed it by uninstalling the plugin in the plugin manager.

    Process Name mysqld
    Event Time 2017-08-27 at 01:46:09 UTC
    PID 1062
    Process Total Virtual Memory 4234692kB
    Process Anonymous Resident Set Size 884252kB
    Process File Resident Set Size 0kB
    Process OOM Score 228
    Status Out of Memory ⚠
    Memory Information
    Used 1.35 GB
    Available 2.34 GB
    Installed 3.69 GB
    Load Information 0.09 0.12 0.14
    Uptime 4 days, 15 hours, 14 minutes, and 5 seconds
    IOStat Information avg-cpu:  %user   %nice %system %iowait  %steal   %idle            2.38    0.09    0.45    0.71    0.00   96.37 Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn sda              47.17      2550.59        90.67 1021369614   36306348 sdb              39.66      2475.50        90.67  991298310   36306348 md127             0.00         0.02         0.04       7815      16072 md126            15.48       148.33        80.69   59397685   32310668 md125             1.25         0.01         5.12       3941    2050944
    Top Processes
    PID Owner CPU% Memory % Command
    15627 mysql 0.29 15.31 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin
    9603 cpanelsolr 0.08 8.04 /usr/lib/jvm/jre-1.8.0/bin/java -server -Xms512m -Xmx512m -XX:NewRatio=3 -XX:SurvivorRatio=4 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=8 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:+CMSScavengeBeforeRemark -XX:PretenureSizeThreshold=64m -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=50 -XX:CMSMaxAbortablePrecleanTime=6000 -XX:+CMSParallelRemarkEnabled -XX:+ParallelRefProcEnabled -XX:-OmitStackTraceInFastThrow -verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime -Xloggc:/home/cpanelsolr/server/logs/solr_gc.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=9 -XX:GCLogFileSize=20M -Dsolr.log.dir=/home/cpanelsolr/server/logs -Djetty.port=8984 -DSTOP.PORT=7984 -DSTOP.KEY=solrrocks -Dhost= -Duser.timezone=UTC -Djetty.home=/home/cpanelsolr/server -Dsolr.solr.home=/home/cpanelsolr/server/solr -Dsolr.install.dir=/home/cpanelsolr -Xss256k -Dsolr.autoSoftCommit.maxTime=3000 -Dsolr.log.muteconsole -XX:OnOutOfMemoryError=/home/cpanelsolr/bin/ 8984 /home/cpanelsolr/server/logs -jar start.jar --module=http
    2803 named 0.04 1.74 /usr/sbin/named -u named
    4559 nobody 0.09 0.76 /usr/sbin/httpd -k start
    9922 root 0.01 0.75 /usr/sbin/httpd -k start
    For addtional details, see the attached dmesg log dump.
    Preview of “oom_dmesg.txt”
    [337474.038930] Out of memory: Kill process 1062 (mysqld) score 228 or sacrifice child
    [337474.039002] Killed process 1062 (mysqld) total-vm:4234692kB, anon-rss:884252kB, file-rss:0kB, shmem-rss:0kB
    #1 bloupbloup, Aug 27, 2017
    Last edited by a moderator: Aug 27, 2017
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
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    The cpanel-dovecot-solr can in-fact lead to increased memory usage on a server, however you shouldn't experience service outages related to memory usage unless your system was already close to it's memory limit. Feel free to open a support ticket using the link in my signature if you'd like us to take a closer look.

    Thank you.
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