Here's how I got god working with rvm.
1. Install rvm for the system.
http://rvm.beginrescueend.com/deployment/system-wide/
2. Set up ruby and gemset. Note that god doesn't play nicely with ruby-1.9.2-p136 but should play nice with the next release of 1.9.x.
rvm install ree rvm use ree rvm gemset create system rvm use ree@system
3. Install god
gem install god
4. Create wrapper
rvm wrapper ree@system boot god
5. Make sure your init script uses /usr/local/rvm/bin/boot_god or use mine below.
6. Set default ruby.
For the system ruby:
rvm --default use system
For ree:
rvm --default use ree
7. Create your /etc/god.conf. Make sure that you use rvm to wrap any binaries you need to run with a particular version of ruby or a particular set of gems (delayed_job is a good example).
Init Script
I wasn't happy with any of the init scripts I could find for God so I wrote my own.
This works with Fedora, RHEL, CentOS.
#!/bin/bash
#
# God
#
# chkconfig: 2345 85 15
# description: start, stop, restart God
#
# Also consider adding this line (kills god weekly) to your crontab (sudo crontab -e):
#
# # deicide is painless
# 0 1 * * 0 god quit; sleep 1; killall god; sleep 1; killall -9 god; sleep 1; /etc/init.d/god start
#
. /etc/rc.d/init.d/functions
RETVAL=0
prog="god"
CONF="/etc/god.conf"
PID_FILE="/var/run/god/god.pid" ; mkdir -p `dirname $PID_FILE`
LOG_FILE="/var/log/god/god.log" ; mkdir -p `dirname $LOG_FILE`
GOD="/usr/local/rvm/bin/boot_god"
start()
{
echo -n $"Starting $prog: "
$GOD -c "$CONF" -P "$PID_FILE" -l "$LOG_FILE" && success || failure
RETVAL=$?
echo
}
stop()
{
echo -n $"Stopping $prog: "
kill `cat $PID_FILE` && success || failure
RETVAL=$?
echo
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status -p $PID_FILE $prog
RETVAL=$?
;;
*)
echo "Usage: $prog {start|stop|restart|status}"
exit 1
;;
esac
exit $RETVAL
