Networking errors are fun to diagnose. Where by fun I mean frustrating.
Are you able to reach the nodes from the head, vice versa? Are you using
ssh to test?
I assume you are calling it a hostname lookup problem because it works if
you use ip addresses and not when you use names?
What happens if you do an nslookup on the nodes? It should tell you where
it is getting its address from.
Have you tried a different switch (preferably a very dumb one, maybe even a
hub) to rule out wiring/overly smart networking hardware?
Just some general troubleshooting thoughts.
On Wed, Aug 27, 2008 at 9:27 AM, Chuck Ritter <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I've installed from branch-5-1 and initially had problems with the
> selinux setting on rh5. After getting past that, I'm getting errors in
> hostname lookup on the compute nodes. This prevented the sge
> installation from completing.
>
> The /etc/hosts file is populated on the compute nodes and
> /etc/nsswitch.conf lists files before dns. However, resolution still
> fails.
>
> Any ideas about what is going on here?
>
> Thanks
> Chuck
>
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