bluepill unicorn pill

bluepill.rb

# http://devmull.net/articles/unicorn-resque-bluepill
# http://www.jamievandyke.com/want-some-campfire-with-that-bluepill
app_name = 'rails'
app_env = 'production'

Bluepill.application(app_name) do |app|
  RAILS_ROOT = "/var/www/#{app_name}/"
  app.uid = app.gid = "www-rails"
  app.working_dir = RAILS_ROOT
  worker_queues = %w[queue]

  app.process("unicorn") do |process|
    process.supplementary_groups = ['rvm']
    process.pid_file = File.join(RAILS_ROOT, 'tmp', 'pids', 'unicorn.pid')
    process.start_command = "bundle exec unicorn_rails -D -c #{app.working_dir}config/unicorn.rb -E #{app_env}"
    process.stop_command = "kill -QUIT {{PID}}"
    process.restart_command = "kill -USR2 {{PID}}"
    process.start_grace_time = 10.seconds
    process.stop_grace_time = 5.seconds
    process.restart_grace_time = 10.seconds

    process.monitor_children do |child_process|
      child_process.stop_command = "kill -QUIT {{PID}}"
      child_process.checks :mem_usage, :every => 10.seconds, :below => 150.megabytes, :times => [3,4], :fires => :stop
      child_process.checks :cpu_usage, :every => 10.seconds, :below => 20, :times => [3,4], :fires => :stop
      child_process.checks :flapping, :times => 2, :within => 30.seconds, :retry_in => 7.seconds
    end
  end
  
  if defined?(worker_queues)
    worker_queues.each_with_index do |queue, i|
      app.process("resque-#{i}") do |process|
        process.supplementary_groups = ['rvm']
        process.group = "resque"

        process.pid_file = "#{RAILS_ROOT}/tmp/pids/resque-#{i}.pid"
        process.stdout = process.stderr = "#{RAILS_ROOT}/log/resque-#{i}.log"
        process.environment = {
          'RAILS_ENV' => app_env, 
          'QUEUE' => queue
        }
        process.start_command = "bundle exec rake resque:work"
        process.stop_command = "kill -QUIT {{PID}}"
        process.daemonize = true
      end
    end
  end
end