Actually, disregard my reference to 1768527 for this bug.
AFAIK:
1) ceilometer notification agents grab incoming data from rabbitmq from different API services;
2) communication from polling agents to notification agents is also done via rabbitmq (ceilometer polling agents can poll libvirt for metrics and post notifications, for example).
So it doesn't look like we need a VIP without ceilometer API.
Actually, disregard my reference to 1768527 for this bug.
AFAIK:
1) ceilometer notification agents grab incoming data from rabbitmq from different API services;
2) communication from polling agents to notification agents is also done via rabbitmq (ceilometer polling agents can poll libvirt for metrics and post notifications, for example).
So it doesn't look like we need a VIP without ceilometer API.