Script para habilitar swap em servidores Ubuntu

enableswap.sh

echo 'Enabling swap...'

fallocate -l 1G /swapfile

chmod 600 /swapfile

mkswap /swapfile

swapon /swapfile

cp /etc/fstab /etc/fstab.bak

echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

sysctl vm.swappiness=10
sysctl vm.vfs_cache_pressure=50

cp /etc/sysctl.conf /etc/sysctl.conf.bak

echo 'vm.swappiness=10' >> /etc/sysctl.conf
echo 'vm.vfs_cache_pressure=50' >> /etc/sysctl.conf

echo 'Done!'