script that can be passed as userdata when booting an instance. It fetches a gist of bash functions and runs the ones called in the main function.

setup.sh

#!/bin/bash

# Setup a new ubuntu 12.04 or 12.10 server appropriate for deploying nodejs and/or ruby applications.

set -x 
set -e

# mkdir -p /tmp/user_data
date >> /tmp/provisioning_began

exec > >(tee /var/log/user-data.log|logger -t user-data -s 2>/dev/console) 2>&1
echo BEGIN
date '+%Y-%m-%d %H:%M:%S'

# Setup a new ubuntu 12.04 server

export USERNAME=${1:-deploy} 
export APPNAME=${2:-mygreatapp}
export AUTHORIZED_KEYS=${3:-'ssh-rsa whateveryerkeyis'}
export RUBY_VERSION=${4:-'1.9.2'}
export NODE_VERSION="0.8.16"
# export APT_PROXY=${5:-"http://10.4.45.95:3142"}
# export LOG_SERVER=${6:-"10.4.45.95"}
export UBUNTU_RELEASE=quantal
export DEBIAN_FRONTEND=noninteractive

sudo apt-get -y update
sudo apt-get -y dist-upgrade
sudo apt-get install -y git curl

git clone https://gist.github.com/4367544.git /tmp/user_data
. /tmp/user_data/user_data_functions.sh

function main () {
  mkdir -p /tmp/user_data
  cd /tmp/user_data
  # setup_apt_cache
  dist_upgrade
  setup_deploy_user
  install_common_tools
  build_tools
  install_redis
  setup_postgres
  # setup_www
  install_ruby
  install_java
  install_nodejs
  haproxy_setup
  # setup_elastic_search
  known_hosts
  add_github_to_known_hosts
  install_mosh
  # setup_newrelic_server_monitoring
  # setup_monitoring
  # setup_logging
  # setup_rvm
  # setup_logging
}
main

date >> /tmp/user_data/provisioned
echo "User data run completed"

exit 0