Install Foretello nightly on EC2

install_foretello.sh

#!/usr/bin/env sh
# Install fortello on to an Amazon EC2 instance. Make sure to set the variables
# in the head of this script.

set -o errexit -o nounset

# Default user for EC2 images is "ec2-user", so switch to "root"
sudo su -

# By default the EC2 instance's hostname matches its internal hostname. The
# fields ${public_ip} and ${public_dns} can be found in the EC2 Dashboard page
# when you select your instance.
readonly public_ip=
readonly public_dns=

# Red hat username, pool ID and password.
readonly rh_username=
readonly rh_poolid=
readonly rh_password=

#-------------------------------------------------------------------------------

# Update hostname to use public dns values
echo "${public_ip} ${public_dns}" >> /etc/hosts
hostname "${public_dns}"

# Check which version of RHEL we got
if uname -r | grep -q el6; then OS_VERSION=6; else OS_VERSION=7; fi

# We need to install a few packages, so let's configure our Red Hat
# subscription and enable a repo.
subscription-manager register --force --username=${rh_username} --password=${rh_password}
subscription-manager subscribe --pool=${rh_poolid}
subscription-manager repos --enable rhel-${OS_VERSION}-server-rpms

yum install -y ntp
service ntpd start

# Update the iptables rules
iptables -I INPUT -m state --state NEW -p tcp --dport 443 -j ACCEPT
iptables -I INPUT -m state --state NEW -p tcp --dport 5671 -j ACCEPT
iptables -I INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT
iptables -I INPUT -m state --state NEW -p tcp --dport 8140 -j ACCEPT
iptables -I INPUT -m state --state NEW -p tcp --dport 9090 -j ACCEPT
iptables -I INPUT -m state --state NEW -p tcp --dport 22 -j ACCEPT
iptables-save > /etc/sysconfig/iptables

service iptables restart

# We need these in order to run the installer
yum install -y git ruby

# Clone the installer code
git clone https://github.com/Katello/katello-deploy.git

# SElinux ON 
setenforce 1

# Enable repositories and install packages for RHEL
cd katello-deploy && ./setup.rb --skip-installer --os rhel${OS_VERSION}
# Initial configuration with some defaults
katello-installer -v -d \
    --foreman-admin-password='changeme' \
    --foreman-initial-organization='Default_Organization' \
    --foreman-initial-location='Default_Location'

Thanks @Ichimonji10 for the improvements :)