Local DNS with dnsmasq on Ubuntu 18 (bionic)

script.sh

#!/bin/usr/env bash

set -ue

# Need sudo.
test $(id -u) -eq 0 || { sudo $0; exit 0; }

# Free up port 53
systemctl stop systemd-resolved
systemctl disabled systemd-resolved

# Even if dnsmasq is already present (mine was), install the package so we get the init.d scripts installed as well
apt install dnsmasq

# Configure dnsmasq. 
# Add one address for each domain you want. 
# Sub-domains will work as well.
cat <<-EOF > /etc/dnsmasq.conf
	address=/node-1/10.133.7.123
	address=/node-2/10.133.7.124
	server=1.1.1.1
	server=1.1.0.0
EOF

# Start dnsmasq service.
service dnsmasq start