Munin is a cPanel plugin that displays information about CPU, Exim, Apache, MySQL usage, and other information, with rrdtool. If it fails to update, there is likely a permissions issue.

To troubleshoot this problem, perform the following steps:

  • Check to make sure that cron runs, and that there is a crontab entry for Munin.
  • Check the  /var/lib/munin  and  /var/log/munin files. munin:munin must own the files in both directories.


    If munin:munin does not own the files in the  /var/log/munin directory, the log files will update, but the graphs that Munin displays will not update.

  • To correct the permissions issue, run the following commands as the root user:

    chown-R munin:munin /var/log/munin
    chown -R munin:munin /var/lib/munin		

    To run Munin manually from the command line, run the following command:

    sudo-u munin munin-cron	
  • You should see new entries in the  /var/log/munin/munin-update  file and no errors in the log file. The graphs will update when you refresh the Munin display in WHM.

Posted in: Cpanel

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Marius Ion ANGEL HOT SOFT LLC (800) 316-7677