Zenoss: Reset RabbitMQ

reset_rabbit.sh

# Run the following commands as root.

service rabbitmq-server stop

rm -Rf /var/lib/rabbitmq
mkdir /var/lib/rabbitmq
chown rabbitmq:rabbitmq /var/lib/rabbitmq

service rabbitmq-server start

rabbitmqctl add_vhost /zenoss
rabbitmqctl add_user zenoss zenoss
rabbitmqctl set_permissions -p /zenoss zenoss '.*' '.*' '.*'

This is the script I use and it works for me.

#!/bin/bash

service rabbitmq-server stop
rm -Rf /var/lib/rabbitmq/mnesia/rabbit\@`hostname -s`
service rabbitmq-server start

rabbitmqctl add_user zenoss zenoss
rabbitmqctl add_vhost /zenoss
rabbitmqctl set_permissions -p /zenoss zenoss '.*' '.*' '.*'

I would also advise looking at this announcement.
http://community.zenoss.org/message/71139