Open Stack

On 6/14/2016 10:14 AM, Kris G. Lindgren wrote:
> Cern is running ceilometer at scale with many thousands of compute
> nodes.  I think their blog goes into some detail about it [1], but I
> don’t have a direct link to it.
>
>
> [1] - http://openstack-in-production.blogspot.com/
> ___________________________________________________________________
> Kris Lindgren
> Senior Linux Systems Engineer
> GoDaddy
>
> From: Bill Jones <bill.jones at sungardas.com
> <mailto:bill.jones at sungardas.com>>
> Date: Tuesday, June 14, 2016 at 9:03 AM
> To: "openstack-oper." <openstack-operators at lists.openstack.org
> <mailto:openstack-operators at lists.openstack.org>>
> Subject: [Openstack-operators] Scaling Ceilometer compute agent?
>
> Has anyone had any experience with scaling ceilometer compute agents?
>
> We're starting to see messages like this in logs for some of our compute
> agents:
>
>     WARNING ceilometer.openstack.common.loopingcall [-] task <function
>     interval_task at 0x2092cf8> run outlasted interval by 293.25 sec
>
> This is an indication that the compute agent failed to execute its
> pipeline processing within the allotted interval (in our case 10 min).
> The result of this is that less instance samples are generated per hour
> than expected, and this causes billing issues for us due to the way we
> calculate usage.
>
> It looks like we have three options for addressing this: make the
> pipeline run faster, increase the interval time, or scale the compute
> agents. I'm investigating the latter.
>
> I think I read in the ceilometer architecture docs that the agents are
> designed to scale, but I don't see anything in the docs on how to
> facilitate that. Any pointers would be appreciated.
>
> Thanks,
> Bill
>
>
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>

This is the specific blog post I think:

http://openstack-in-production.blogspot.com/2014/03/cern-cloud-architecture-update-for.html

-- 

Thanks,

Matt Riedemann