On Thursday 13 July 2006 03:42, Brad Aisa wrote:
> Well, yes, but this is normal, since it is the headnode, it has
> a public network, and the private cluster network.

It's a bad idea and leads to network trouble. Many network daemons use the
hostname for detecting to which address (ethernet interface) they should bind
their service. With hostname I mean the output of the command "hostname".

Normally you'd resolve to two different names:
 - external interface should resolve to the name you have in your DNS for the
 cluster head (eg: ocluster.hpce.nec.com)
 - internal interface should resolve to a fake name, valid only inside the
 cluster (eg: master.cluster)

I prefer to have the HOSTNAME set to the internal interface name. This way I
avoid a lot of trouble with daemons like maui, torque and
others. Unfortunately renaming the internal interface _after_ the OSCAR
installation is a bad idea, so what you can do is just leave the internal name
and hostname as they are (janus.androticus) and add a line to assign the
external interface another name. Rebooting the master might make sense at this
stage, such that the services are restarted cleanly and bound to the expected
ports and interfaces.

Regards,
Erich

> 
> --- Bernard Li <[EMAIL PROTECTED]> wrote:
> 
> > Hi Brad:
> > 
> > It looks like the host "janus.androticus" resolves to 2
> > different IP
> > addresses?
> > 
> > Bernard 
> 
> 
> Brad Aisa
> baisa at brad-aisa dot com
> 
> 
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