sudo nova-manage service list
Binary           Host                                 Zone             Status     State Updated_At
nova-scheduler   controller.localdomain               nova             enabled    :-)   2012-08-03 03:26:31
nova-volume      controller.localdomain               nova             enabled    :-)   2012-08-03 03:26:31
nova-compute     controller.localdomain               nova             enabled    :-)   2012-08-03 03:26:27
nova-network     controller.localdomain               nova             enabled    :-)   2012-08-03 03:26:29
nova-compute     node.localdomain                     nova             enabled    :-)   2012-08-03 03:26:30
nova-network     node.localdomain                     nova             enabled    :-)   2012-08-03 03:26:29