shutting down machines with Nagios

[Eli Stair]

Yep, I'd recommend having your event handler that fires on an overheat
condition correlate _several_ sources before shutting down large numbers of
systems.  If you look hard, you'll surely find a number of good sources for
temp correlation (netbotz, switch/router SNMP, management processors,
chiller, cooling towers, lm_sensors, etc).

Having a per-host shutdown based on local lm_sensors/management info is
usually fine (just beware of bugs in your temp reference...), i.e. If you're
checking CPU temps, check temp and fan status...  Large-scale cluster
power-off's are tender though, you may even want to avoid having that
handled automatically, and just have an easily-accessible method of doing a
room/datacenter manually from remote if you do correlate everything.

The action of turning something off is the easy part, it's determining that
you _really_ want to that's pointy.

IMO

/eli


On 6/8/06 11:34 AM, "Johnston Michael J Contr AFRL/DES"
<michael.johnston at kirtland.af.mil> wrote:

> 
> Does anyone use anything that will go out and shutdown computers in
> instances where a room is over heating or too many errors start occurring?
> We've recently had a problem with heat in a server room.  I got messages
> that the room was overheating, but by the time I got there the room was
> really hot and all the machines were running.  I'm looking for something
> that takes steps to save machines if a threshold is ever met or exceeded.
> 
> Thanks for the help!
> 
> 
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