Setup SWAP on Linux VPS: Extend RAM with Swap Space

Create Swap File

sudo fallocate -l 2G /swapfile && sudo chmod 600 /swapfile
sudo mkswap /swapfile && sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

Tune swappiness

echo "vm.swappiness=10" | sudo tee -a /etc/sysctl.conf && sudo sysctl -p