The Munin cPanel plugin displays information about CPU, Exim, Apache®, MySQL® usage, and other information with the
rrdtool logging system. If Munin fails to update, this document provides the steps to resolve the issue.
To troubleshoot this problem, perform the following steps:
Does Munin run during maintenance?
Confirm that the nightly cron maintenance runs and that a crontab entry for Munin exists.
crontab -u munin -l command should return output that resembles the following:
Confirm Munin owns the files.
munin:munin owns the files in the
munin:munin does not own the files in the
/var/log/munin directory, the service will update the log files, but it will not update the graphs that Munin displays.
To set the correct ownership, run the following commands:
Run Munin manually
To run Munin manually, run the
sudo -u munin munin-cron command.
Check the results
New entries will appear in the
/var/log/munin/munin-update log file with no errors. To update the daily graphs, refresh the Munin interface.
Munin's weekly graphs will display updates after the time that you configured in the
crontab entry for Munin.