Sometimes, due to some new specific server requirements, you will find it necessary to increase your swap space. Even if your swap partition is setup as a Logical Volume, your requirements may exceed what is available. This is where creating a new swap file is the best option. In this example, we are going to add a new 12GB swap file.
Check Current Swap Space
Verify the total amount of used and free physical and swap memory with the free command and the -h human-readable flag
# free -ht total used free shared buff/cache available Mem: 755G 321G 3.0G 62G 430G 670G Swap: 4G 1G 3G Total: 771G 322G 6G
Display the swap usage summary by device using swapon. Same as cat /proc/swapsContinue reading Add a Swap File to RHEL/CentOS