Munin server monitoring

[optrex]

I came across this little gem of an application in WHM recently. I can't believe more is not made of it. Its called Munin and it monitors and graphs your server all day long, so you can identify issues.

If you would like to add it, you can find it in WHM at
Main >> cPanel >> Manage Plugins

tick the box and select save.

After its installed, its best to do a restart, this will help you also identify a small bug with monitoring mysql (no information is captured after a restart). To fix this bug you need to do the following:

Edit the /etc/munin/plugin-conf.d/cpanel.conf Munin configuration file, and modify the [mysql*] to look like below:

[mysql*]
user root
group wheel
env.mysqladmin /usr/bin/mysqladmin
env.mysqlopts --defaults-extra-file=/root/.my.cnf


Ensure that /root/.my.cnf contains correct root password to the MySQL databases.

Then restart Munin service from SSH:
/etc/init.d/munin-node restart