[Ci-users] Unexpected outage 17:00 UTC Today - Service Restored

Wed Jun 14 14:40:02 UTC 2017
Fabian Arrotin <arrfab at centos.org>

On 14/06/17 11:51, Karanbir Singh wrote:
> On 14/06/17 08:18, Daniel Horák wrote:
>> Hi Brian,
>> I see lots of slaves offline, is it connected to the yesterday's outage
>> or is it different issue?
>> Thanks,
>> Daniel
>> On 06/13/17 19:57, Brian Stinson wrote:
>>> Hi Folks,
>>> Jenkins was leaking file descriptors and hit a limit today at 17:00 UTC,
>>> service was degraded for about 10 minutes, and service was fully
>>> restored at around 17:24.
>>> I've increased the open-files limit for jenkins and am working on tuning
>>> the garbage collector to mitigate this in the future.
>>> Thanks for your patience, and apologies for any inconvenience.
> I noticed a lot of slaves were down, and was pointed to this by a few
> people - on chat.openshift.io and irc.freenode : on investigation it
> looked like jenkins master had exhausted ram and other jobs on the
> machine were killing the cpu with loads upto 50.x; I had to restart the
> jenkins master to bring services back.
> once Brian is online, he will likely do a more through investigation and
> get back with details.
> regards

I spoke with Brian last week about a plan to move Jenkins to another
node : actually jenkins master is running on a small VM (2 vcpus and 4Gb
of RAM), and load average is indeed always high (actually above 20, to
give an example).
Let me sync with him (as we already have the node that will be used as
replacement) to schedule a maintenance window for this

Fabian Arrotin
The CentOS Project | http://www.centos.org
gpg key: 56BEC54E | twitter: @arrfab

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