[rancid] Foundry (Brocade) environmental details

[Josten, Michael]

The changing altitude is a result of the poor implementation brocade did with those sensors.
My guess is, they used a chip that measures pressure and then they derive the altitude from that
data instead of using a proper altometer. We also get this chatter from an ICX 7750 device.



-----Ursprüngliche Nachricht-----
Von: Rancid-discuss [mailto:rancid-discuss-bounces at shrubbery.net] Im Auftrag von heasley
Gesendet: Mittwoch, 18. Februar 2015 18:43
An: Jethro R Binks
Cc: rancid-discuss at shrubbery.net
Betreff: Re: [rancid] Foundry (Brocade) environmental details

Wed, Feb 18, 2015 at 02:37:26PM +0000, Jethro R Binks:
> On Tue, 17 Feb 2015, Michael Newton wrote:
> 
> > Just set up a couple of Brocade switches and am now getting a lot of 
> > noise from RANCID when the weather changes in Seattle.
> > 
> > - ! Pressure:      102.1kPa
> > - ! Altitude:      -133m
> > + ! Pressure:      102.0kPa
> > + ! Altitude:      -122m
> > 
> > 
> > This appears to be part of the ³show chassis² output.
> 
> Taking this into account, the sub ShowChassis subroutine in my francid 
> looks like (I'm not sure how close this would be to what you have):
> 
> If you're running rancid v3, you'll find similar in foundry.pm.

Index: foundry.pm.in
===================================================================
--- foundry.pm.in	(revision 3035)
+++ foundry.pm.in	(working copy)
@@ -174,7 +174,7 @@
 	if (/THERMAL PLANE/) {
 	    $skip = 1;
 	}
-	if (/temperature:/i) {
+	if (/(pressure|altitude|temperature):/i) {
 	    $skip = 1;
 	}
 	s/(Fan \d+ \S+), speed .*/$1/;

> (It seems odd to me that Altitude is changing by 10m ...

or why one would care about either.
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