Open Stack

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
>>>>
>>>>
>>>
>>
>> _______________________________________________
>> OpenStack-dev mailing list
>> OpenStack-dev at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>>
>>
>
> _______________________________________________
> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20131212/ad66a8fb/attachment.html>