[Nut-upsuser] abusing nut ups to do temperature shutdown WHILEmonitoring UPS'es

[Doug Parsons]

I have a plan to do the same thing. The approach I was going to take is to 
use several fake ups units that use contact closure style drivers. The use a 
contact closure from the temp sensor to send the fake UPS units into LB 
status. If the are fake units and all servers monitor for these in addition 
to the real ones. Then you can set your needed count to shut down when the 
temp goes high. You will need some of these relays to be feed from the same 
source as the UPS units so that in a real power failure the fake units go 
off line.

I have 30+ servers listening to one master so my config will be a little 
complex. If this sound feasible I can go into more detail.

User intervention will be required in this case also. But until the room is 
inspected and the cause is determined I do not want the servers coming back 
on line.

Doug


----- Original Message ----- 
From: "Jon Bendtsen" <jon.bendtsen at laerdal.dk>
To: "Arjen de Korte" <arjen at de-korte.org>
Cc: <nut-upsuser at lists.alioth.debian.org>
Sent: Thursday, July 26, 2007 7:21 AM
Subject: **SPAM** Re: [Nut-upsuser] abusing nut ups to do temperature 
shutdown WHILEmonitoring UPS'es


> Den torsdag 26.jul kl. 12:19 skrev Arjen de Korte:
>
>> The problem here is that once you've switched off all your
>> equipment, it
>> will stayoff until someone intervenes.
>
> true, but thats okay
>
>
>>> Then noone will tell the NUT slave clients to shut down gracefully.
>>>
>>>
>>> I am open to other suggestions if anyone has (better) ideas.
>>
>> I think a better idea would be to monitor the temperature in the
>> server
>> room through other means and raise an alarm / send notifications to an
>> operator who can then decide what to do.
>
> there are no night time operators, and i certainly do not want to become
> one. Besides if the temperature really is too high because of a broken
> airconditioner then i can not fix that anyway.
>
>
>
> JonB
>
> _______________________________________________
> Nut-upsuser mailing list
> Nut-upsuser at lists.alioth.debian.org
> http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
>
>