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