[torqueusers] PBS_Server: pbsd_main, hostname issues

Dave Jackson jacksond at clusterresources.com
Thu Jun 30 13:12:23 MDT 2005


Josh,

  TORQUE 1.2.0p5 will print the following if the server cannot start due
to reverse name lookup issues:

--------
Unable to lookup host X by address (check /etc/hosts or DNS reverse name
lookup)
--------

Thanks,
Dave

On Thu, 2005-06-30 at 12:30 -0600, Dave Jackson wrote:
> Josh,
> 
>   TORQUE does not just look at /etc/hosts.  Internally, it is using the
> calls gethostbyname() and gethostbyaddr().  To start up, TORQUE requires
> both forward and reverse name lookup.  Usually, what happens is that
> sites have forward name lookup (host to ipaddr) set up via DNS but do
> not have reverse name lookup (ipaddr to host).  When /etc/hosts is
> setup, both forward and reverse name lookup are handled by default.
> 
>   We will enhance the messages TORQUE returns on failure to make problem
> isolation easier.
> 
> Dave
> 
> On Thu, 2005-06-30 at 10:47 -0700, Josh Lauricha wrote:
> > On Thu 06/30/05 10:46, Andrew Sheehan wrote:
> > > looks like pbs_server was looking at /etc/hosts and needed an entry
> > > for the server.
> > 
> > On this note, why is it that torque only seems to register the
> > /etc/hosts files? I can use any standard tools to lookup/connect to a
> > node from any other node, however if its not in /etc/hosts
> > pbs_{server,sched,mom} never see it.
> > 
> 
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