examples/gravatar.god

   1 # run with:  god -c /path/to/gravatar.god
   2 #
   3 # This is the actual config file used to keep the mongrels of
   4 # gravatar.com running.
   5
   6 RAILS_ROOT = "/var/www/gravatar2/current"
   7
   8 %w{8200 8201 8202}.each do |port|
   9   God.watch do |w|
  10     w.name = "gravatar2-mongrel-#{port}"
  11     w.interval = 30 # seconds
  12     w.start = "mongrel_rails cluster::start --only #{port} \
  13       -C #{RAILS_ROOT}/config/mongrel_cluster.yml"
  14     w.stop = "mongrel_rails cluster::stop --only #{port} \
  15       -C #{RAILS_ROOT}/config/mongrel_cluster.yml"
  16     w.grace = 10 # seconds
  17
  18     pid_file = File.join(RAILS_ROOT, "log/mongrel.#{port}.pid")
  19
  20     w.behavior(:clean_pid_file)
  21
  22     w.start_if do |start|
  23       start.condition(:process_running) do |c|
  24         c.interval = 5 # seconds
  25         c.running = false
  26       end
  27     end
  28
  29     w.restart_if do |restart|
  30       restart.condition(:memory_usage) do |c|
  31         c.above = (150 * 1024) # 150mb
  32         c.times = [3, 5] # 3 out of 5 intervals
  33       end
  34
  35       restart.condition(:cpu_usage) do |c|
  36         c.above = 50 # percent
  37         c.times = 5
  38       end
  39     end
  40   end
  41 end