Enables swap so MySQL databases stop shutting down when using digital ocean droplets

enable_swap.sh

#!/bin/bash

rm -rf /swapfile
sudo fallocate -l 4G /swapfile

ls -lh /swapfile
sudo chmod 600 /swapfile

sudo mkswap /swapfile
sudo swapon /swapfile

sudo swapon -s

free -m

echo "/swapfile none swap sw 0 0" >> /etc/fstab
sudo sysctl vm.swappiness=10
sudo sysctl vm.vfs_cache_pressure=50
echo "vm.swappiness=10" >> /etc/sysctl.conf
echo "vm.vfs_cache_pressure=50" >> /etc/sysctl.conf

echo "Restarting Mysql"
sudo /etc/init.d/mysql restart