Set hostname for hotfix instance

set_hostname.sh

#!/bin/bash

DOMAIN=noomii.com

HOSTNAME=hotfix
IPV4='184.73.226.144'

# Set the host name
hostname $HOSTNAME
echo $HOSTNAME > /etc/hostname

# Add fqdn to hosts file
cat<<EOF > /etc/hosts
# This file is automatically genreated by ec2-hostname script
127.0.0.1 localhost
$IPV4 $HOSTNAME.$DOMAIN $HOSTNAME

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
EOF