gistfile1.txt

#!/bin/bash

CHEF_ROLE=$1

apt-get update;

# install ruby and other pre-requisites
apt-get install -y \
  build-essential \
  emacs23-nox \
  git \
  irb \
  libopenssl-ruby1.8 \
  rdoc \
  ri \
  ruby \
  ruby1.8 \
  ruby1.8-dev \
  rubygems1.8 \
  ssl-cert \
  wget \
;

# install rubygems
wget http://production.cf.rubygems.org/rubygems/rubygems-1.3.7.tgz
tar xvfz rubygems-1.3.7.tgz
cd rubygems-1.3.7
ruby setup.rb
ln -sfv /usr/bin/gem1.8 /usr/bin/gem

# install chef via gem
gem install chef --no-ri --no-rdoc --verbose

# download chef scripts and configuration files
# note that CHEF_ROLE dictates with JSON file to use (associates client with that role)
mkdir -p /etc/chef
wget -qO/etc/chef/client.rb mysite.com/chef/client.rb
wget -qO/etc/chef/chef.json mysite.com/chef/chef.${CHEF_ROLE}.json
wget -qO/etc/chef/validation.pem mysite.com/chef/validation.pem
wget -qO/etc/init.d/chef-client mysite.com/chef/chef-client-init

# initial run of chef -- role association happens
chef-client -j /etc/chef/chef.json -L /var/log/chef.log -l debug

# remove validation key
rm -rf /etc/chef/validation.pem

# run init script and chkconfig it on
chmod +x /etc/init.d/chef-client
chkconfig chef-client on
/etc/init.d/chef-client start