Creating swap space on Ubuntu 18.04 - 20.04

swap.sh

#!/bin/bash

# Creates 8GB of swap space and persists some recommended settings for servers

sudo fallocate -l 8G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo sysctl vm.swappiness=10
sudo sysctl vm.vfs_cache_pressure=50
echo "vm.swappiness=10
vm.vfs_cache_pressure=50" >> /etc/sysctl.conf