Re: [opennms-devel] SNMP collection and destination

Jeff Gehlbach wrote:
> 
> All data collected by the OpenNMS collectors (except for strings) is  
> written to RRDs, regardless of the protocol used to collect the data.
> 
>>  Is it also possible to add database fields and keep the most recent
>> value there?
> 
> Not without code modifications.  What would you do with that data?

I'm looking at (and not very far along) picking up some application 
specific values, some of which only the current value matters.  An rrd 
that looks like the 'physical memory' graph that opennms stores isn't 
all that interesting.  I'd prefer some alternative where only the 
current value is stored but with an option to generate an event on a 
change if you wanted a history of transitions.

> It might be easier to modify your data collection config to persist  
> the attributes that you're interested in as strings in addition to  
> their numeric form.  Then you could externally harvest the attributes'  
> raw values from the strings.properties files within the RRD repository.

That would probably work but seems like considerably more overhead than 
necessary for something that doesn't change often or ever.

-- 
   Les Mikesell
    [email protected]


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