Audit recipe to keep an eye on EngineYard's cloud updates

default.rb

# If you use EngineYard cloud you will be aware that they change their 'main'
# recipes on a regular basis and that EngineYard provide no information about
# what they have changed.
#
# This can make it difficult to keep your application's environment stable.
#
# Add a personalised version of this recipe to your custom recipes and your
# custom recipes will fail if EngineYard have changed the versions of (or removed)
# any of software you've told your audit recipe to check.
# 
#
# Installation instructions
#
# 1. Create a 'cookbooks/ey_audit' directory in your custom recipes and add this
#    file to it.
#
# 2. Update this file to reflect the versions and packages that you expect
#    EngineYard to have installed on your instances.
#
# 3. Add the line
#
#      require_recipe "ey_audit"
#
#    to the top of cookbooks/main/recipes/default.rb
#
# 4. Upload and apply your new custom recipes
#
# 5. Sleep easier

RUBY_VERSION          = 'Ruby Enterprise Edition 2011.03'
RUBY_GEMS_VERSION     = '1.5.2'
BUNDLER_VERSION       = '1.0.10'
NGINX_VERSION         = '0.8.54'
UNICORN_VERSION       = '1.1.5'
GIT_VERSION           = '1.7.3.5'
MEMCACHED_VERSION     = '1.4.5'
MYSQL_VERSION         = 'Ver 14.12 Distrib 5.0.51'
LIBXML_VERSION        = '2.7.3'

ey_cloud_report "ey_audit" do
   message "checking versions of software installed by EngineYard"
end

if ['solo', 'app', 'app_master', 'util'].include?(node[:instance_role])
  execute 'check-ruby-version' do
    command "ruby -v | grep '#{RUBY_VERSION}'"
    returns 0
  end

  execute 'check-ruby-gems-version' do
    command "gem -v | grep '#{RUBY_GEMS_VERSION}'"
    returns 0
  end

  execute 'check-bundler-version' do
    command "bundle -v | grep 'Bundler version #{BUNDLER_VERSION}'"
    returns 0
  end

  execute 'check-git-version' do
    command "git --version | grep 'git version #{GIT_VERSION}'"
    returns 0
  end

  execute 'check-memcached-version' do
    command "memcached -h | grep 'memcached #{MEMCACHED_VERSION}'"
    returns 0
  end

  execute 'check-libxml-version' do
    # We care about this because our nokogiri gem will need to be reinstalled
    # if the version changes
    command "xml2-config --version | grep '#{LIBXML_VERSION}'"
    returns 0
  end
end

if ['solo', 'app', 'app_master'].include?(node[:instance_role])
  execute 'check-nginx-version' do
    command "sudo nginx -v 2>&1 | grep 'nginx version: nginx/#{NGINX_VERSION}'"
    returns 0
  end

  execute 'check-unicorn-version' do
    command "unicorn -v | grep 'unicorn v#{UNICORN_VERSION}'"
    returns 0
  end
end

if node[:instance_role] == 'db_master'
  execute 'check-mysql-version' do
    command "mysql --version | grep '#{MYSQL_VERSION}'"
    returns 0
  end
end