Monitoring temperatures on Cisco equipment

[mail at catsnest.co.uk]

On Wed, Jan 26, 2011 at 8:47 PM, Jeffrey Watts
<jeffrey.w.watts at gmail.com> wrote:
> I'm looking to monitor temperature on some various Cisco equipment (2821,
> 3750, 4948, 6509, etc).  I've looked at the check_catalyst_temp.pl and
> check_env_stats.py plugins, which both look in .1.3.6.1.4.1.9.9.13.1.  I see
> and understand the basic mechanisms of these checks.
> What I don't understand is why both require warning and critical thresholds.
>  From what I can tell, both walk ciscoEnvMonTemperatureStatusDescr,
> check ciscoEnvMonTemperatureState (and alert accordingly) AND also
> check ciscoEnvMonTemperatureStatusValue to see if it's out of the warning
> and critical thresholds specified on the command line.  I understand why one
> would want to be able to set custom thresholds (that would override "normal"
> and "warning" states).  What I don't understand is why are they required?
>  Is there a reason, or is it just an oversight?  I don't have much
> experience monitoring network equipment, so I'm wondering if there's a
> reason for it.
> On that same note, does anyone know where those thresholds are stored?  I
> see in the same OID that there is ciscoEnvMonTemperatureThreshold, but
> that's an absolute upper bound before a forced shutdown occurs.  I'm
> assuming that the thresholds for "warning" and
> "critical" ciscoEnvMonTemperatureState must be stored somewhere else.  Does
> anyone know where that is?
> Unless there's a good reason for requiring -w and -c, I'll probably change
> one of the plugins to not require them.
> Thanks in advance,
> Jeffrey.


I maybe misunderstanding you here but isn’t the whole point of running
Nagios checks to return Normal, Warning or Critical, so you can alert
agents them?
What would be the point in just returning the value and doing nothing with it?

Regards,
Rithcie



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