CentOS 6.3 Chef-Solo bootstrap (RackSpace)

chef_solo_bootstrap.sh

#!/bin/bash -xe

#THIS SCRIPT MUST BE RUN AS ROOT

ADMIN_USER=admin
ADMIN_GROUP=admin

#add admin group
(cat /etc/group | grep -E '\b$ADMIN_GROUP\b') || sudo groupadd $ADMIN_GROUP

#add admin user
(cat /etc/passwd | grep -E "\b$ADMIN_USER\b:x") || useradd -m -s /bin/bash $ADMIN_USER -g $ADMIN_GROUP

#sudoless access for admin user
(cat /etc/sudoers | grep -E "^$ADMIN_USER\b.*NOPASSWD") || echo "$ADMIN_USER ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers

#configure SSH
SSH_KEY="ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAuwaDITgrsmxVvSJ+HEir4iW2eBb8XqB3wIxCWJwmhiB2S6MkdX1CFcj8boHL2RIYgKN0yiTCVlOdQFjhyRpnd8NbS0RW7753SE1hzkgOg+2e1B15lf1PCSD5OPWAtpb1eYlLcs6hns+yFhYCFeQrKLBL2/si8D8OcQcTR7BjjFQEWdhjl4cYiT68cr57yFT+c/f32ZTynEWukC2YIGMjJ1nACUOYF8CSp6RUrD2kY3C1Pb1Q5V3jwi0lhay4aF5AWp28hPVtYASBe2BrYXp8uErhnmWxgXNV19P0NSHE7TBXd9nXz/njI2SDP/p2N/vHquz/Ybxs4F+kGGXknUFitQ== cmaitchison@gmail.com"
SSH_DIR=/home/$ADMIN_USER/.ssh 
mkdir -p -m 700 $SSH_DIR
echo $SSH_KEY > $SSH_DIR/authorized_keys
chmod 600 $SSH_DIR/authorized_keys
chown -R $ADMIN_USER:$ADMIN_GROUP $SSH_DIR

#disable password access
sed -E -i 's/PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config
/etc/init.d/sshd restart

yum update -y

yum install -y gcc automake autoconf libtool make
yum install -y ruby
yum install -y ruby-devel ruby-docs ruby-ri ruby-rdoc
yum install -y rubygems

#install chef
gem install chef ruby-shadow --no-ri --no-rdoc
mkdir -p /var/chef
chown $ADMIN_USER:$ADMIN_GROUP /var/chef/

#init git
yum install -y git-core

#init capistrano deploy directories
mkdir -p /var/www/shared/
mkdir -p /var/www/releases/
chown $ADMIN_USER:$ADMIN_GROUP -R /var/www

reboot now