Postgres process keeps getting restarting

[kapso]

I am trying to watch the Postgres process on my ec2 instance using sudo bluepill load pg.pill ...but I have noticed that bluepill keeps recycling the Postgres process. Anyone know what I could be doing wrong? I saw the same behavior in God and trying bluepill as an alternative, but I am seeing the same behavior.

When I run sudo bluepill status I see status switching between postgres(pid:): starting and postgres(pid:): down

This is the message in the logs...

[warning]: [postgresql:postgres] pid_file /tmp/postgres.pid does not exist or cannot be read
[warning]: [postgresql:postgres] pid_file /tmp/postgres.pid does not exist or cannot be read
[err]: [postgresql:postgres] Failed to signal process  with code 0: no implicit conversion from nil to integer

# pg.pill
Bluepill.application('postgresql') do |app|
  app.process('postgres') do |process|
    process.start_command = 'sudo service postgresql restart'
    process.stop_command = 'sudo service postgresql stop'
    process.pid_file = '/tmp/postgres.pid'
    process.start_grace_time = 20.seconds
    process.stop_grace_time = 20.seconds
    process.restart_grace_time = 20.seconds
  end
end