[Nagiosplug-devel] Best practice for thresholding

[Thomas Guyot-Sionnest]

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On 22/06/09 01:22 PM, John Vincent wrote:
> So I've been attempting to use check_memcached and in the process was
> cleaning up some invalid perfdata output. I also noticed that the
> thresholding is somewhat broken. This plugin, like many database
> plugins, has a hit ratio metric. Hit ratio metrics make the most sense
> when approcahed from a "warning/critical below X%" (at least in my
> mind). So if my hit ratio drops below 75%, I want a warning and if it
> goes below 50% I want a critical.
> 
> What's the best way to handle this with Nagios::Plugin? Should the
> logic be done in the script or should it be done in the module itself?


A bit off-topic but if you're interested here's the plugin I use (and
wrote) for checking my memcached servers. It's written in PHP, and
monitor primarily the evictions (by parsing the performance data string
from previous check) and cache ratio.

http://solaris.beaubien.net/~dermoth/pages/nagios/plugins.php

- --
Thomas
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