Add a swap memory partition to your ubuntu 16.04 server

add_swap_ubuntu.sh

#!/bin/bash

#-- create the swap
sudo fallocate -l 1G /swapfile

#-- change permission
sudo chmod 600 /swapfile

#-- do the swap
sudo mkswap /swapfile

#-- add the swapp to be permanent
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

#-- add configs to swap
echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf
echo 'vm.vfs_cache_pressure=50' | sudo tee -a /etc/sysctl.conf

echo "Swap created"

#-- show the info
sudo swapon --show
free -h