[NTLUG:Discuss] Need network attached Temperature monitor/shutdown device

[Fred James]

David Simmons wrote:
> maybe time for some type of Arduino project?
>
> On Tue, Jan 5, 2010 at 10:58 AM, Richard <ntlug at rain4us.net> wrote:
>
>   
>> with the obvious need for something that is Linux friendly.
>>
>> I'm not too impressed with the current PageR  device that now seems to
>> be dead.  It was VERY hard to configure and the only way I was able to
>> get it to shutdown the Linux server was to setup a user with sudo
>> shutdown privileges with a bashrc that initiated the shutdown.
>>
>> What do you guys use to monitor the temperature in a server room, email
>> notifications of an overtemp and  then shutdown the servers if the AC
>> goes off or fails?
>>
>>
>> --
>> Richard
>>     
We just used ...
    AAG 1-Wire device(s) for the temperature sensor(s)
    a C program that read the device(s)
    a shell script that called the C program and did all the rest of the 
stuff ...
       record the metrics
       send out mail alerts when temperature was over certain level
       shut stuff down
       whatever
      
... we had two problems ...
(1) the corporate email system was not as reliable as one might hope
(2) although we had working shutdown scripts, not all of the (SGI IRIX) 
servers would respond properly
(2.1) we wanted to stop the OS, and then power off the machine ... in 
the SGI (Origin 200) world power on/off was through the MSC card, 
accessible thought console (AUX port), and the variations in the rev 
level of the MSC cards caused some unexpected results - some worked 
really well, others didn't - so we dropped the project.

That's probably more a trip down memory lane than any help - sorry
Regards
Fred James