[Gllug] RS-232 temperature reader and feeder into a web page

[John Hearns]

MJ wrote:
> Hi
> 
> I understand there was a project done that uses one of these circuits
> http://www.maplin.co.uk/Module.aspx?TabID=1&DOY=9m11&ModuleNo=2886&criteria=
> or similar?
> In order to monitor system (inside server or a PC) and hosting environment 
> temperature. This is soldered to an USB or maybe RS-232 is ok via a wire. 
> Perl script reads measurements from RS-232 into a webpage. Help as I have 
> no been able to find the best search parameters to Google.

I've done environmental temperature measurement for racks, using 
thermocouples and a box which connects the thermocouples and translates 
to an RS-232 port.

However, please don't considering this solution today. Please.

A) specify IPMI monitoring cards in your servers
     these are variously called Service Processors (Sun)
       ILO cards (HP)

Our CMA (Cluster monitoring appliance) will monitor IPMI cards and take 
actions based on parameters going above specified levels.
(Actions = run scripts, email, shutdown etc)

B) for environmentals in your machine room, get a Netbotz or a Jacarta.
   http://www.jacarta.co.uk/
   http://www.netbotz.com/
http://www.apc.com/products/family/index.cfm?id=345
    Netbotz also resold by APC.

Why string something together by yourself when you can buy a reliable 
solution off the shelf?


You're going to rattle on about how you can do the job for pennies with 
your solution , yadda yadda.
You've posted to a group for advice, so listen to someone who HAS done 
both your RS-232 route and the IPMI route.











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