Using Monit with Puma in Jruby - jruby

Question

I have Rails app set up using Jruby with puma as the web server. Puma doesn't daemonize on its own, so I wrapped it in a bash script to handle generating a pid (as described in the Monit FAQ). The script is below:
#!/bin/bash
APP_ROOT="/home/user/public_html/app"
export RAILS_ENV=production
export JRUBY_OPTS="--1.9"
export PATH=/home/user/.rbenv/shims:/home/user/.rbenv/bin:$PATH
case $1 in
start)
echo $$ > $APP_ROOT/puma.pid;
cd $APP_ROOT;
exec 2>&1 puma -b tcp://127.0.0.1:5000 1>/tmp/puma.out
;;
stop)
kill `cat $APP_ROOT/puma.pid` ;;
*)
echo "usage: puma {start|stop}" ;;
esac
exit 0
This works from the command line and it works even if I execute it after running the below to simulate the monit shell:
env -i PATH=/bin:/usr/bin:/sbin:/usr/sbin /bin/sh
The relevant monitrc lines are below:
check process puma with pidfile /home/user/public_html/app/puma.pid
start program = "/usr/bin/env PATH=/home/user/.rbenv/shims:/home/user/.rbenv/bin:$PATH /home/user/puma.sh start"
stop program = "/usr/bin/env PATH=/home/user/.rbenv/shims:/home/user/.rbenv/bin:$PATH /home/user/puma.sh stop"
The monit log shows it constantly try to start puma, and it even gets so far as regenerating a new PID, but is never able to actually start puma. Every time I try to run this script from every other context I can think of it works - except from monit.

Answer 1

I managed to get this to work after reading this post: running delayed_job under monit with ubuntu
For some reason, changing my monitrc to use the following syntax made this work. I have no idea why:
start program = "/bin/su - user -c '/usr/bin/env PATH=/home/user/.rbenv/shims:/home/user/.rbenv/bin:$PATH /home/user/puma.sh start'"
stop program = "/bin/su - user -c '/usr/bin/env PATH=/home/user/.rbenv/shims:/home/user/.rbenv/bin:$PATH /home/user/puma.sh stop'"