Re: [Devmon] Graphing Interface Errors / Other tests

[Buchan M. <bg...@st...>]

On Friday, 3 December 2010 14:34:22 Mario Valetti wrote:
> Hi,
> 
> I realise my question has previously been posted, but I cannot find an
> answer or guide that gets this working on my installation.
> 
> Basically, I want to graph interface errors (if_err), or discards
> (if_dsc) or something that is monitored in devmon which is not already
> graphed by default (like the if_load, for example).  I've followed the
> documentation on
> http://devmon.svn.sourceforge.net/viewvc/devmon/trunk/docs/GRAPHING, which
> I believe is the latest how-to, but at the moment I don't get .rrd files
> created after completing steps 1 & 2 and restarting  Xymon (adding
> "if_err=devmon" to TEST2RRD in hobbitserver.cfg).
> 
> I'm running XYMON 4.3.0.0-beta2, and DEVMON v0.3.1-beta1.

I believe the devmon collector module crashes in xymon-4.3.0-beta2, please use 
beta3. However ... if you are getting graphs for if_load, then there must be a 
different problem.

> As I'm testing this against a 3750 switch, I have also added
> "TABLE:rrd(DS:ds0:ifInErrors:COUNTER; DS:ds1:ifOutErrors:COUNTER)" to the
> message file of the standard cisco-3750/if_err template as explained in the
> docs.
> 

Do you get an RRD table in the html of the test (e.g. View->Source from your 
browser when viewing the test page for if_err on this device)?

If so, what you have done should be sufficient to generate rrd files. You may 
want to check your rrd-status.log file for any errors.

> I've added graph definitions to the hobbitgraph.cfg file; but even if there
> is an error there it shouldn't prevent the .rrd files been written, as far
> as I understand.
> 
> 
> Last thing...
> I'm not fully understanding the steps (and probably where I'm going wrong:
> * "In order for Hobbit to collect the values and update the RRD files, you
>   need to either use a script with the --extra-script option to
>   hobbitd_rrd (such as extras/devmon-rrd.pl) or use the supplied devmon
>   rrd collector module (extras/do_devmon.c) and the patch (
>   extras/hobbit-4.2.0-devmon.patch) which adds the collector to do_rrd.c."*
> 
> How do I use the supplied devmon rrd collector module to make Hobbit
> collect the data?

Xymon now includes this collector module by default. You do not need a script, 
and setting if_err=devmon in TEST2RRD is all that is required to "use the 
devmon rrd collector module".

> Do I need to schedule a script which runs this
> periodically?

No.

Regards,
Buchan