Create swapfile on

swapfile.h

#!/bin/bash
#https://www.digitalocean.com/community/tutorials/how-to-add-swap-space-on-ubuntu-16-04

sudo fallocate -l 2G /swapfile

ls -lh /swapfile

chmod 0600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

sudo swapon --show

sudo cp /etc/fstab /etc/fstab.bak

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

sudo sysctl vm.swappiness=30