How to add SWAP partition on CentOS
Task: Add a 1GB SWAP partition and mount it automatically at boot
Create a SWAPFILE in the /var directory
dd if=/dev/zero of=/var/SWAPFILE bs=1k count=1024000
Set up the SWAP partition
mkswap /var/SWAPFILE
Activate the SWAP partition
swapon /var/SWAPFILE
Mount the SWAP partition at boot: edit /etc/fstab and add the following line at the end
/var/SWAPFILE swap swap defaults 0 0
- Check the status of the SWAP partition.
- To stop the SWAP partition, run:
swapoff /var/SWAPFILE
- To delete the SWAP file, remove the corresponding line in /etc/fstab.