Skip to content

Instantly share code, notes, and snippets.

@johnyaucc

johnyaucc/Add Swap on CentOS6

Last active January 2, 2016 16:29
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save johnyaucc/8330156 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save johnyaucc/8330156 to your computer and use it in GitHub Desktop.
Download ZIP
Raw
Add Swap on CentOS6
# check for swap space
swapon -s
# check filesystem
df -h
# create and enabled the swap file (e.g. 512MB)
sudo dd if=/dev/zero of=/swapfile bs=1024 count=512k
sudo mkswap /swapfile
# activate the swap file
sudo swapon /swapfile
# add swap to filesystem
vi /etc/fstab
# by pasting the following
/swapfile swap swap defaults 0 0
# set ownership and permission
chown root:root /swapfile
chmod 600 /swapfile
# configure swappiness (0-100, 100 = swap often and too soon usually)
sysctl vm.swappiness=10
cat /proc/sys/vm/swappiness
# (optional) set swappiness on boot
vi /etc/sysctl.conf
# and set
vm.swappiness=10
# note: It may be useful to set your swappiness to 0 to ensure that your VPS operates optimally.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment