[TriLUG] Reverse Lookup Using /etc/hosts

[Tarus Balog]

On Apr 26, 2007, at 9:50 AM, Barry Gaskins wrote:

> So if you make changes to your configuration you might need to  
> restart your
> java application to notice the change.

We actually kinda figured this out in OpenNMS. It *was* working, in a  
sense.

(forget the rest of this if you aren't a big OpenNMS fan)

When, say, node 10.1.1.1 gets discovered, it's labeled as 10.1.1.1.  
If you add

10.1.1.1 foo.example.com

to /etc/hosts and rescan, the node label will not change. However, if  
you look at the interface label it *does* change. Now if you delete  
and readd the node, it will be labeled foo.example.com. But if you  
change it in /etc/hosts and rescan, it won't change (although as  
before the interface label will).

So in technical terms I think this is referred to as a "bug". It may  
be due to the caching as well.

Thanks to everyone for their help. Some people don't like asking for  
the time and getting told how to build a watch, but I learn more from  
this list about "how things work" than I have a right to.

(grin)

-T

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Tarus Balog, OpenNMS Maintainer             Main:   +1 919 533 0160
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