sudo gem install zombie_passenger_killer

zombie_passenger_killer [options]

Options:
    -m, --max [SIZE]                 Max high CPU entries in history before killing (default: off)
        --history [SIZE]             History size (default: 5)
    -c, --cpu [PERCENT]              Mark as high CPU when above PERCENT (default: 70)
    -g, --grace [SECONDS]            Wait SECONDS before hard-killing (-9) a process (default: 5)
    -i, --interval [SECONDS]         Check every SECONDS (default: 10)
    -p, --pattern [PATTERN]          Find processes with this pattern (default: ' Rack: ')
    -h, --help                       Show this
    -v, --version                    Show Version
    -t, --time                       Show time in output

app.process("zombie_passenger_killer") do |process|
  process.start_command = "zombie_passenger_killer --max 5 --history 10 --cpu 30 --interval 10"
  process.stdout = process.stderr = "/var/log/autorotate/zombie_passenger_killer.log"
  process.pid_file = "/var/run/zombie_passenger_killer.pid"
  process.daemonize = true
end

check process zombie_killer
  with pidfile "/var/run/zombie_passenger_killer.pid"
  start program = "/bin/bash -c 'export PATH=$PATH:/usr/local/bin HOME=/home;zombie_passenger_killer --max 5 --history 10 --cpu 30 --interval 10 &>/var/log/zombie_passenger_killer.log & &>/dev/null;echo $! > /var/run/zombie_passenger_killer.pid'"
  stop program = "/bin/bash -c 'PIDF=/var/run/zombie_passenger_killer.pid;/bin/kill `cat $PIDF` && rm -f $PIDF'"
  group zombie_killer