sorry, i apparently don't know how to format emails...
To: openstack-operat...@lists.openstack.org; firstname.lastname@example.org
Date: Tue, 10 Mar 2015 16:05:47 -0400
Subject: Re: [openstack-dev] [Openstack-operators] [Ceilometer] Real world
My experience with Ceilometer is that MongoDB is/was a major bottleneck.
You need sharding + servers with lot of RAM. You need to set TTL on your
samples, and only save in DB the metrics that really mater to you. MongoDB
v3 should also help.
Regarding RabbitMQ pressure, I think this blueprint
we dropped Ceilometer as the core tool to gather metrics for our rating and
billing system. I must admit it has improved, but I think it's broken by
design: a metering and monitoring system is not the same thing.
We have built a component that directly listens from rabbit notification