check_load gone crazy

Dorfman, Justin justin at mahalo.com
Wed Sep 8 19:31:49 CEST 2010


I believe you are running into a flapping issue.

Read this: http://nagios.sourceforge.net/docs/2_0/flapping.html

<http://nagios.sourceforge.net/docs/2_0/flapping.html>
Regards,

Justin Dorfman
Mahalo.com Inc. > Jr. Systems Engineer
818.485.1458
@jdorfman <http://www.twitter.com/jdorfman> |
@MahaloSysops<http://twitter.com/MahaloSysops>| Blog:
http://bit.ly/aNiWSk


On Tue, Sep 7, 2010 at 5:39 PM, Mike Chesnut
<mikec at aggregateknowledge.com>wrote:

> I'm wondering if this is a known bug, and/or if anybody else has seen
> similar behavior...
>
> We're using Nagios 3.2.1 on Linux, monitoring several Linux systems.  We
> run the check_load probe against every system.  Occasionally (at
> non-regular intervals), Nagios will freak out and alert on the load
> average of many (sometimes *all*) systems.  When this occurs, it reports
> the *same* load averages for each system, and the weirdest part is that
> these load averages are completely bogus.
>
> Then, over the course of the next 20 or so minutes, the load averages
> being reported gradually decrease (they go from CRITICAL to WARNING to
> OK), always staying in sync across *every* system.
>
> Again, when this happens, the load averages being reported are
> completely unrelated to the actual load averages on any of the systems
> that are actually being checked.
>
> Any ideas for what I can do to get to the bottom of why this happens?
>
> Thanks,
> Mike
>
>
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