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Ok, that sounds like it would do what you want. Thanks for clarifying. :-)

Doug


On Thu, Dec 12, 2013 at 4:06 AM, Nadya Privalova <nprivalova at mirantis.com>wrote:

> Doug,
>
> Sorry for confusing you with 'local' term. I meant that collector is up on
> the node which is one of the Galera-nodes. Data will be replicated and all
> the Galera nodes will be synced.
>
> Nadya
>
>
> On Thu, Dec 12, 2013 at 2:01 AM, Doug Hellmann <
> doug.hellmann at dreamhost.com> wrote:
>
>>
>>
>>
>> On Tue, Dec 10, 2013 at 9:47 AM, Nadya Privalova <nprivalova at mirantis.com
>> > wrote:
>>
>>> Julien,
>>>
>>> Yes, I use the same SQL for Nova and Ceilometer. Thanks for pointing
>>> this out. My bad, I didn't take it into account. So if we want to use
>>> Ceilometer + MySQL in production (in theory :) ) we need to use separate
>>> controllers with Ceilometer's MySQL only. And each controller may run it's
>>> own collector which will write data into "local" MySQL. Am I right that
>>> only one instance of central-agent may be started (WIP
>>> https://wiki.openstack.org/wiki/Ceilometer/blueprints/tasks-distribution)?
>>> Please Julien correct me if I'm wrong. And maybe Ceilometer has
>>> recommendations for production deployment and I just missed it?
>>>
>>
>> You will want all of the ceilometer collectors writing to the same
>> database, rather than having a local database for each one. Otherwise when
>> you query the ceilometer API you won't see all of the results.
>>
>> Doug
>>
>>
>>
>>>
>>>
>>> On Tue, Dec 10, 2013 at 4:25 PM, Boris Pavlovic <bpavlovic at mirantis.com>wrote:
>>>
>>>> Nadya, Julien,
>>>>
>>>>
>>>> We are working around profiling system based on logs. This will allows
>>>> us to detect bottlenecks.
>>>> We should make a couple of small patches in each project to support
>>>> profiling.
>>>>
>>>> As we are going to be well integrated with OpenStack infrastructure we
>>>> are going to use Ceilometer as a log collector.
>>>> And we already made patch for this in Ceilometer:
>>>> https://review.openstack.org/#/c/60262/
>>>> So it will be nice to get it reviewed/merged.
>>>>
>>>>
>>>> Thanks.
>>>>
>>>>
>>>> Best regards,
>>>> Boris Pavlovic
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Tue, Dec 10, 2013 at 3:19 PM, Julien Danjou <julien at danjou.info>wrote:
>>>>
>>>>> On Tue, Dec 10 2013, Nadya Privalova wrote:
>>>>>
>>>>> Hi Nadya,
>>>>>
>>>>> > Guys, if you have any questions or comments you are welcome! I think
>>>>> that
>>>>> > 2x difference between avg time in "empty lab" and "5 sec polling"
>>>>> scenario
>>>>> > is not a bad result. But 100 instances that were being monitored
>>>>> during the
>>>>> > test is not a real load for the lab. What do you think? Should I
>>>>> repeat the
>>>>> > test with 1000 instances?
>>>>>
>>>>> You didn't mention where you were storing the metrics. If you store
>>>>> them
>>>>> in the same MySQL DB that's used by Nova for example, it's likely
>>>>> that's
>>>>> the problem is the load Ceilometer puts on the MySQL cluster slows Nova
>>>>> down.
>>>>>
>>>>> I don't think it's worth running the test with more instances for now.
>>>>> The results are clear, the next action should be to see why things are
>>>>> slowed down that much. It shouldn't happen.
>>>>>
>>>>> --
>>>>> Julien Danjou
>>>>> # Free Software hacker # independent consultant
>>>>> # http://julien.danjou.info
>>>>>
>>>>> _______________________________________________
>>>>> OpenStack-dev mailing list
>>>>> OpenStack-dev at lists.openstack.org
>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>>>>>
>>>>>
>>>>
>>>
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>>>
>>
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