Your OpenStack services must now point their RabbitMQ configuration to the highly available, virtual cluster IP address — rather than a RabbitMQ server’s physical IP address as you normally would.
For OpenStack Image, for example, if your RabbitMQ service IP address is
192.168.42.100 as in the configuration explained here, you would use
the following line in your OpenStack Image API configuration file
(glance-api.conf):
rabbit_host = 192.168.42.100
No other changes are necessary to your OpenStack configuration. If the node currently hosting your RabbitMQ experiences a problem necessitating service failover, your OpenStack services may experience a brief RabbitMQ interruption, as they would in the event of a network hiccup, and then continue to run normally.
