If you have a /var partition, and if that partition is too small it may fill up quickly. If you want to move the data which is stored in ”/var” to another partition, run the following:
cd /var du | sort -n
This will give you a full readout of all the directories that are using the most space. The directory using the most disk space will appear at the bottom of the list.
One common culprit is mysql (/var/lib/mysql on Redhat). To move that path to another partition, run the following:
cd /home mkdir mysql chown mysql:mysql mysql cd mysql /sbin/service mysqld stop cp -Rp /var/lib/mysql/* . cd /var/lib mv mysql mysql_old ln -s /home/mysql ./mysql /sbin/service mysqld start #once satisfied that mysqld is running, remove the old data: rm -rf mysql_old