[Openstack] [metering] Cinder usage data retrieval

Nick Barcet nick.barcet at canonical.com
Wed Jun 20 18:15:14 UTC 2012


On 06/20/2012 07:26 PM, John Griffith wrote:
> On Wed, Jun 20, 2012 at 10:53 AM, Nick Barcet <nick.barcet at canonical.com> wrote:
>> Hello John (or anyone else working on cinder),
>>
>> As part of the ceilometer project¹, we're working on usage data
>> retrieval from various OpenStack components. One of them is Cinder.
>> We're targeting Folsom for the first release, therefore it seems
>> important for both projects to be able to work together, this is why
>> we're bringing ceilometer to your attention and asking for advices. :)
>>
>> What we want is to retrieve the maximum amount of data, so we can meter
>> things, to bill them in the end. For now and for Cinder, this would
>> first include (per user/tenant):
>> - the amount of reserved volume space
>> - the amount of used volume space
>> - the number of volumes
>> but we'll need probably more in a near future.
>>
>> Do you have any advice regarding integration of Ceilometer and Cinder
>> together? What would be a stable interface we could rely on that would
>> be independent of the backend?
>>
>> Thanks in advance,
>>
>> Regards,
>>
>> ¹  http://launchpad.net/ceilometer
>> --
>> Nick Barcet <nick.barcet at canonical.com>
>> aka: nijaba, nicolas
>>
> 
> Hi Nick,
> 
> We should chat about how things are shaping up so far and how you're
> implementing things on the other sides (consistency where
> practical/possible).  Also, it sort of depends on the architecture and
> use model details of Ceilometer, which I hate to admit but I'm not
> really up to speed on.
> 
> My first reaction/thought is the best most appropriate place to tie in
> is via the python-cinderclient.  There would be a number of ways to
> obtain some of this info, whether deriving it or maybe some extensions
> to obtain things directly.

Sounds great.  We have our weekly meeting on Thurdays at 4PM UTC [1]
which you would be welcome to join, or I can set up a bridge for us a
phone chat.  Let me know what you would prefer.

[1] http://wiki.openstack.org/Meetings/MeteringAgenda

Cheers,
Nick


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