For every package that must connect to a Messaging Server, the Debian package enables you to configure the IP address for that server and the user name and password that is used to connect. The following example shows configuration with the ceilometer-common package: These debconf screens appear in: ceilometer-common, cinder-common, glance-common, heat-common, neutron-common and nova-common. This will configure the below directives (example from nova.conf): [DEFAULT] rabbit_host=localhost rabbit_userid=guest rabbit_password=guest The other directives concerning RabbitMQ will stay untouched.