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 <[email protected]>wrote: > > > > On Tue, Dec 10, 2013 at 9:47 AM, Nadya Privalova > <[email protected]>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 >> <[email protected]>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 <[email protected]>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 >>>> [email protected] >>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >>>> >>>> >>> >> >> _______________________________________________ >> OpenStack-dev mailing list >> [email protected] >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> >> > > _______________________________________________ > OpenStack-dev mailing list > [email protected] > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > >
_______________________________________________ OpenStack-dev mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
