Alert with more detail

[Jon Angliss]

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On Thu, 25 Sep 2008 23:00:11 +0800, "howard chen" <howachen at gmail.com>
wrote:

>Hello,
>
>Sometimes, nagios will alert of high loading of a system via Email,
>with the body:
>
>
>...CRITICAL - load average: 5.42, 6.04, 3.04

>But this information is useless unless you know which process is using
>most of the CPU, e.g. MySQL. Then you can take follow up action to
>prevent it from happen again.

>So are there any easy way to monitor the process CPU utilization when
>the alert is generated using nagios?

>Or other better method?

It looks like you're after a little more than just warning on the
load.  I guess advanced notice on the cause of the load increase is
always good, it gives you a good headstart when beginning triage.  I
did a quick search on Nagios Exchange (http://www.nagiosexchange.org),
and this came up:

  http://www.nagiosexchange.org/cgi-
bin/page.cgi?g=Detailed%2F1932.html;d=1

It looks like it might need a tweak based on the comment, but I'd
imagine it does what you're after.  Uses "ps" to list the processes,
and sorts by CPU load.  It'll generate a warning when over a certain
(customizable) threshold, and critical over another (also
customizable).  It'll then report the process that is sitting at the
top of the heap.

- -- 
Jon Angliss

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