god config

gistfile1.txt

RAILS_ROOT = File.dirname(File.dirname(__FILE__))
RAILS_ENV = "staging"
RUBY_PATH = "/home/rails/.rvm/rubies/ruby-1.9.3-p392/bin/ruby"# path of rails user
def generic_monitoring(w, options = {})
  w.start_if do |start|
    start.condition(:process_running) do |c|
      c.interval = 10.seconds
      c.running = false
      c.notify = {:contacts => ['team'], :category => 'Start if processing running false'}
    end
  end
  
  w.restart_if do |restart|
    restart.condition(:memory_usage) do |c|
      c.above = options[:memory_limit]
      c.times = [3, 5] # 3 out of 5 intervals
      c.notify = {:contacts => ['team'], :category => 'Restart if memory hits limit'}
    end
  
    restart.condition(:cpu_usage) do |c|
      c.above = options[:cpu_limit]
      c.times = 5
      c.notify = {:contacts => ['team'], :category => 'Restart if CPU hits limit'}
    end
  end
  
  w.lifecycle do |on|
    on.condition(:flapping) do |c|
      c.to_state = [:start, :restart]
      c.times = 5
      c.within = 5.minute
      c.transition = :unmonitored
      c.notify = {:contacts => ['team'], :category => 'Flapping'}
      c.retry_in = 10.minutes
      c.retry_times = 5
      c.retry_within = 2.hours
    end
  end

  w.transition(:up, :start) do |on|
    on.condition(:process_exits) do |c|
      c.notify = {:contacts => ['team'], :category => 'Transition from up to start on process exits'}
    end
  end

  w.transition([:start, :restart], :up) do |on|
    on.condition(:process_running) do |c|
      c.running = true
      c.notify = {:contacts => ['team'], :category => 'Transition from start/restart to up on process running'}
    end
  end
end

God.watch do |w|
  w.name = 'task-server'
  w.interval = 30.seconds
  w.start = "su - rails -c './app/lib/daemons/daemon_runner start' "
  w.stop = "su - rails -c './app/lib/daemons/daemon_runner stop' "
  w.start_grace = 10.seconds
  w.restart_grace = 10.seconds
  w.pid_file = "#{RAILS_ROOT}/log/daemon_runner.pid"
  w.log = "#{RAILS_ROOT}/log/god.log"
  
  w.behavior(:clean_pid_file)

  generic_monitoring(w, :cpu_limit => 30.percent, :memory_limit => 100.megabytes)
end