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# http://unicorn.bogomips.org/SIGNALS.html
God.watch do |w|
w.name = "unicorn"
w.interval = 30.seconds # default
# unicorn needs to be run from the rails root
w.start = "cd #{RAILS_ROOT} && #{BIN_PATH}/unicorn_rails -c #{RAILS_ROOT}/config/unicorn.rb -E #{RAILS_ENV} -D"
# QUIT gracefully shuts down workers
w.stop = "kill -QUIT `cat #{PID_DIR}/unicorn.pid`"
# USR2 causes the master to re-create itself and spawn a new worker pool
w.restart = "kill -USR2 `cat #{PID_DIR}/unicorn.pid`"
w.start_grace = 10.seconds
w.restart_grace = 10.seconds
w.pid_file = "#{PID_DIR}/unicorn.pid"
w.uid = 'deploy'
w.gid = 'staff'
w.behavior(:clean_pid_file)
w.start_if do |start|
start.condition(:process_running) do |c|
c.interval = 5.seconds
c.running = false
end
end
w.restart_if do |restart|
restart.condition(:memory_usage) do |c|
c.above = 300.megabytes
c.times = [3, 5] # 3 out of 5 intervals
end
restart.condition(:cpu_usage) do |c|
c.above = 50.percent
c.times = 5
end
end
# lifecycle
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.retry_in = 10.minutes
c.retry_times = 5
c.retry_within = 2.hours
end
end
end
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