Re: [Condor-users] Wrong hostname in Condor-G file staging

[Jan Ploski <Jan.Ploski@xxxxxxxx>]

condor-users-bounces@xxxxxxxxxxx schrieb am 01/24/2008 11:12:19 PM:

> Hello,
> 
> Condor-G (from a 6.7.18 installation) is misbehaving on a machine which 
> has two IP addresses and two different hostnames. The internal hostname 
> (not mapped in the global DNS) keeps appearing in the 
> sourceUrl/destinationUrl fields of the SOAP message used to request file 

> staging from WS-GRAM, causing the job to be held with the "Globus error: 

> Staging error for RSL element fileStageIn" message.
> 
> How can we make Condor-G use the external hostname instead of the 
> internal one? Am I right in assuming that the wrong hostname resolution 
> is performed somewhere in the Condor implementation and not in the 
> GAHP/Globus Java components (i.e., do they get the RSL with the resolved 

> hostname from condor_schedd or how does it work)?

The problem is solved, so I will answer myself for the archive:

The hostname resolution seems to happen in the condor_gridmanager process, 
spawned by condor_schedd. The GAHP server which interfaces with the 
Condor-shipped Globus components is in turn spawned by the 
condor_gridmanager. GAHP most likely receives the (correctly or 
incorrectly) resolved hostname from condor_gridmanager.

The submission host's IP address set on its "external world" network 
interface was being resolved via DNS to an internal hostname. To prevent 
this, the /etc/hosts file was edited so that this IP address is resolved 
to the external hostname. I'm still puzzled a bit about the workings of 
the hostname resolution mechanism, but the SOAP messages now contain the 
correct hostname.

-JPL