root@sentinel:~# cat /etc/hosts
127.0.0.1	localhost
127.0.0.1	sentinel.MYDOMAIN.net	sentinel

root@sentinel:~# /etc/init.d/zenoss stop
Daemon: zenpython stopping...
Daemon: zenjmx stopping...
Daemon: zeneventlog stopping...
Daemon: zenwin stopping...
Daemon: zenwinperf stopping...
Daemon: zenprocess stopping...
Daemon: zencommand stopping...
Daemon: zenperfsnmp stopping...
Daemon: zenmodeler stopping...
Daemon: zentrap stopping...
Daemon: zenactiond stopping...
already stopped
Daemon: zenstatus stopping...
Daemon: zensyslog stopping...
Daemon: zenping stopping...
Daemon: zeneventd stopping...
already stopped
Daemon: zenjobs stopping...
Daemon: zenhub stopping...
already stopped
Daemon: zenrrdcached stopping...
Daemon: zopectl daemon manager not running
Daemon: zeneventserver stopping...

root@sentinel:~# /etc/init.d/rabbitmq-server restart
[ ok ] Restarting message broker: rabbitmq-server.

root@sentinel:~# rabbitmqctl -p /zenoss list_queues
Listing queues ...
celery	0
...done.

Here's a /etc/init.d/zenoss status for good measure

root@sentinel:~# /etc/init.d/zenoss status
Daemon: zeneventserver program running; pid=2387
Daemon: zopectl not running
Daemon: zenrrdcached program running; pid=2454
Daemon: zenhub not running
Daemon: zenjobs program running; pid=2545
Daemon: zeneventd not running
Daemon: zenping program running; pid=2631
Daemon: zensyslog program running; pid=2663
Daemon: zenstatus program running; pid=2701
Daemon: zenactiond not running
Daemon: zentrap program running; pid=2774
Daemon: zenmodeler program running; pid=2812
Daemon: zenperfsnmp program running; pid=2852
Daemon: zencommand program running; pid=2883
Daemon: zenprocess program running; pid=2922
Daemon: zenwinperf program running; pid=2968
Daemon: zenwin program running; pid=3034
Daemon: zeneventlog program running; pid=3084
Daemon: zenjmx program running; pid=3118
Daemon: zenpython program running; pid=3151