[openstack-dev] [Openstack] Ceilometer and notifications

Sandy Walsh sandy.walsh at rackspace.com
Thu Aug 1 13:34:19 UTC 2013

On 08/01/2013 10:25 AM, Julien Danjou wrote:
> On Thu, Aug 01 2013, Sandy Walsh wrote:
>> Right, that is a concern. Within RAX we have two downstream services
>> that consume notifications (StackTach and Yagi) and we've configured
>> nova to write to two queues. --notifications_topics can take a list.
> Fair enough. So IIUC that means we should change Ceilometer to consume
> CONF.notification_topics using the default queue associated with this
> topic, and let the deployer add more notification_topics in nova if they
> have several consumer (that should have their own
> CONF.notification_topics).
> This would be the correct way, even if not really deployer-friendly.

There are risks, but I think it'll offer a better "out-of-the-box"

>> I don't think so, but if that was possible it would solve our problem.
>> AFAIK, amqp only uses the exchange as a dispatcher and all storage is
>> done in the queue ... but I could be wrong. I vaguely recall there being
>> a durable exchange setting as well as durable queue.
>> I'll do some investigating.
> Yeah I've little hope too, but might worth a look. Thanks Sandy!

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