Glad to see there is another group interested in rating/billing. I'm thinking if I should announce our rating service to join the fun :-) You know, I'm kidding. The more groups join the rating service discussion, the better. But IMHO, we just need one rating service for OpenStack. So let's collaborate to work out a good rating service to benefit OpenStack and consumer. But before more duplicate work, it would be great if we can start some discussion. Cheers.

On 14/08/14 01:40, Christophe Sauthier wrote:
We are very pleased at Objectif Libre to intoduce CloudKitty, an effort to provide a fully OpenSource Rating-as-a-Service comptinent in OpenStack..

Following a first POC presented during the last summit in Atlanta to some Ceilometer devs (thanks again Julien Danjou for your great support !), we continued our effort to create a real service for rating. Today we are happy to share it with you all.

So what do we propose in CloudKitty?
 - a service for collecting metrics (using Ceilometer API)
- a modular rating architecture to enable/disable modules and create your own rules on-the-fly, allowing you to use the rating patterns you like - an API to interact with the whole environment from core components to every rating module - a Horizon integration to allow configuration of the rating modules and display of pricing information in "real time" during instance creation - a CLI client to access this information and easily configure everything

Technically we are using all the elements that are used in the various OpenStack projects like olso, stevedore, pecan... CloudKitty is highly modular and allows integration / developement of third party collection and rating modules and output formats.

A roadmap is available on the project wiki page (the link is at the end of this email), but we are clearly hoping to have some feedback and ideas on how to improve the project and reach a tighter integration with OpenStack.

The project source code is available at More stuff will be available on stackforge as soon as the reviews get validated like python-cloudkittyclient and cloudkitty-dashboard, so stay tuned.

The project's wiki page ( provides more information, and you can reach us via irc on freenode: #cloudkitty. Developper's documentation is on its way to readthedocs too.

We plan to present CloudKitty in detail during the Paris Summit, but we would love to hear from you sooner...


             Christophe and Objectif Libre

Christophe Sauthier Mail :
CEO & Fondateur                               Mob : +33 (0) 6 16 98 63 96
Objectif Libre URL :
Infrastructure et Formations Linux            Twitter : @objectiflibre

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