On Cpanel Server, got following error
Drive Critical: /dev/sda3 (/usr) is 91% full
This is because /usr/ partition is full, mostly disk space used by /usr/local/apache/domlogs folder.
To fix this, you can move domlogs folder in another partition that have FREE disk space.
In my cause, /backup have lot of free disk space. So, moved domlogs to /backup
service httpd stop cd /usr/local/apache mv domlogs /backup ln -s /backup/domlogs service httpd start
Now onwards, domlogs will be stored in /backup/domlogs folder.