To start RabbitMQ at boot and shut it down when the system goes down,
add the following lines to /etc/rc.local and /etc/rc.shutdown, respectively:

/etc/rc.local:

if [ -x ${TRUEPREFIX}/sbin/rabbitmq-server ]; then
	echo -n ' rabbitmq'
	install -d -o _rabbitmq /var/run/rabbitmq
	su -l _rabbitmq -c "${TRUEPREFIX}/sbin/rabbitmq-server -detached"
fi

/etc/rc.shutdown:

	su -l _rabbitmq -c "${TRUEPREFIX}/sbin/rabbitmqctl stop"