rfc2822's blog

[FreeBSD] unicorn.god

I had a very strange problem concerning my Ruby on Rails installation, using FreeBSD, nginx, Unicorn and God.

When starting god from the command line as root, everything worked. However, as soon as I placed the god command into /etc/rc.local or a even service file in /usr/local/etc/rc.d, god didn’t start the Unicorn server but showed exit code 127 for “bundle exec unicorn -E production -c config/unicorn.rb”.

So I added a log directive to the god configuration and looked at the log file. It said:

env: ruby1.9: No such file or directory

Then I changed the god configuration to include /usr/local/bin in the PATH and now everything works. Here my configuration file:

RAILS_ROOT = '/srv/www/my-project-prod/current'

God.watch do |w|
    w.name = 'my-project'
    w.interval = 30.seconds

    w.uid = 'my-project'
    w.gid = 'my-project'

    w.pid_file = File.join(RAILS_ROOT, "tmp/pids/unicorn.pid")
    w.behavior(:clean_pid_file)

    w.dir = RAILS_ROOT
    w.env = { 'PATH' => '/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin' }

    w.start = "bundle exec unicorn -E production -c config/unicorn.rb -D"
    w.stop_signal = 'QUIT'
    w.restart = "kill -USR2 `cat #{w.pid_file}`"
    w.start_grace = w.restart_grace = 30

    w.start_if do |start|
        start.condition(:process_running) do |c|
            c.running = false
        end
    end
end

If somebody is interested, here is my god service file (/usr/local/etc/rc.d/god):

#!/bin/sh
#

# PROVIDE: god
# REQUIRE: DAEMON

. /etc/rc.subr

name="god"
rcvar=`set_rcvar`
command="/usr/local/bin/god"

start_cmd='${command} -c /usr/local/etc/god.conf'
status_cmd='${command} status'
stop_cmd='${command} terminate'

load_rc_config $name
run_rc_command "$1"

Where god_enable=”YES” is set in /etc/rc.conf, and /usr/local/etc/god.conf includes all my project god files.