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Re: [Condor-users] Problem with UID_DOMAIN

On Mon, Aug 06, 2012 at 08:10:29PM +0200, Rob de Graaf wrote:
> You can check the
> behavior using condor_config_val UID_DOMAIN.

That's useful to know, thank you.

Going back to my original two boxes, it turns out they do have the same UID
and GID for the user I'm testing with - although one does have a slightly
different set of supplementary groups (it's running ubuntu 11.10 instead of

However by trawling logs I did finally work out the problem:

08/06/12 17:51:22 ERROR: the submitting host claims to be in our UidDomain (int.example.com), yet its hostname ( does not match.  If the above hostname is actually an IP address, Condor could not perform a reverse DNS lookup to convert the IP back into a name.  To solve this problem, you can either correctly configure DNS to allow the reverse lookup, or you can enable TRUST_UID_DOMAIN in your condor configuration.

So, reverse DNS (or /etc/hosts entries) are required for UID_DOMAIN to be
honoured. It's working now.

Many thanks for the pointers!