Re: [Devmon] Ignore shutdown interfaces on Cisco switches

[W.J.M. N. <ne...@nl...>]

Hello,

> On Tuesday, 29 December 2009 10:55:40 W.J.M. Nelis wrote:
>   
>> I recently solved a similar problem, with the additional restraint that
>> the "interesting interfaces" should be specified in the templates only,
>> while the interfaces which are shutdown are listed only in the bb-hosts
>> file.
>>     
>
> Devmon ignores interfaces which are "shut", so you shouldn't need to exclude 
> them in bb-hosts ...
>   
We're using devmon version 0.3.1-beta1. As the interfaces of Cisco 
switches which are "shutdown" (disabled)  do show up in the output of 
for instance if_err, there must be a problem over here. Does the version 
of Hobbit / Xymon one is using matters?

>> My final setup is as follows:
>>  - in the templates, file exceptions, the exception "only" is used to
>> select the interfaces of interest. The exception "ignore" is thus not used.
>>  - in bb-hosts, for "all" tests, the "ignore" exception is used and the
>> "only" exception is not used.
>>     
>
> This is obviously not a generic solution, which means that you have to 
> maintain local modifications to the templates (which is not what I want to  
> encourage).
>   
I was not aware of this design / usage rule. I thought it to be normal 
that one changes the templates to match the local conditions, at least 
the thresholds.

>> Thus the devmon configuration in bb-hosts does not contain dependencies
>> on tests, which is encoded only in the templates. The devmon
>> configuration in bb-hosts does contain for each networking device the
>> list of disabled interfaces. In my case, those lists are generated from
>> a configuration database.
>>     
>
> BTW, I've got a local hack to write some devmon test data to a database ... 
> there are some minor issues with the feature I was wanting to create 
> (effectively using devmon as part of a network discovery tool). Would this be 
> of interest?
>   
No, I don't think so. We're running a network-discovery script, which 
generates a database. Using this database about 10 configuration files 
are generated, amongst them (parts of the) configuration files for Xymon 
(devmon) and MRTG. A closed loop (database -> devmon -> database) does 
not seem to be a good idea.

Regards,
  Wim Nelis.



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