Ceilometer still sending samples to messaging queue

[Miguel Alejandro Cantu]

Now that the collector is deprecated in favor of using explicit publishers, there is no need to send samples over to the messaging queues. In fact, doing that when the gnocchi publisher is enabled risks accumulating a large number of messages in the metering.sample queue. The following output is from a AIO built from the master branch today:

root@aio1-rabbit-mq-container-e4a289e7:~# rabbitmqctl list_queues -p /ceilometer
Listing queues ...
metering.sample 1045
notifications.warn 0
notifications.error 0
notifications.audit 0
notifications.info 0
event.sample 713
notifications.debug 0
notifications.sample 0
notifications.critical 0

Notice how metering.sample and event.sample messages are not being consumed.

We need to tell ceilometer to stop.

[Jean-Philippe Evrard (jean-philippe-evrard)]

This was fixed by another commit: https://review.openstack.org/#/c/436222/