[torqueusers] problems w/ mixed case domain names

Dave Jackson jacksond at supercluster.org
Wed Nov 17 16:09:27 MST 2004

Charles, Mike,

  The latest patch 5 does appear to correct the DNS case sensitivity
issue.  An earlier release tested by Mike was failing, not due to the
case sensitivity patch, but due to conflicts with an unrelated patch. 
These conflicts are now resolved.  Please try that latest snap and let
us know if you see any further issues.



On Wed, 2004-11-17 at 12:00, Charles Edwin Webster wrote:
> just a contribution to the discussion on torque
> and case of the servername...
> we have also had issues with case sensitivity of PBS.
> in short: because the DNS returned part of the resolved
> servername in uppercase, we had to changed the domain
> name resolution order and use the /etc/hosts file to
> ensure that the name was resolved in lowercase.
> having this issue "fixed" would be nice...
> our computing and information services (CIS) had this
> to say:
> "By convention, domain names can be stored with
> arbitrary case, but domain name comparisons for
> all present domain functions are done in a
> case-insensitive manner, assuming an ASCII
> character set, and a high order zero bit. This
> means that you are free to create a node with
> label "A" or a node with label "a", but not both
> as brothers; you could refer to either using "a" or
> "A".  I suggest you update your queuing system to
> compare domain names in a case-insensitive manner.
> The DNS servers are working correctly as defined by
> DNS RFCs.  We (CIS) did not make a change to the
> DNS data.  The servers, depending on varying
> conditions, will return the parent domain or top level
> domain in upper case.  The DNS servers software,
> like your queuing system, is provided by an outside
> party and since it is operating within the scope of
> the RFCs, there is nothing for us to request be fixed.
> I would suggest you contact the manufacture of your
> software and request a fix.  If that is not possible,
> switching to software that does not have this problem
> seems to be your only alternative."
> thanks,
> charles
> Nico Kadel-Garcia wrote:
> > ----- Original Message -----
> > From: "Michael Hanulec" <hanulec at hanulec.com>
> > To: <torqueusers at supercluster.org>
> > Sent: Monday, November 15, 2004 10:15 PM
> > Subject: [torqueusers] problems w/ mixed case domain names
> >
> > > Hi Everybody...
> > >
> > > I'm current attempting to run torque-1.1.0p5-snap.1099755743 on an RHEL
> > > 3/AMD64 based system.  I might of found a bug... or maybe this is a know
> > > issue.  My server name is 'falcon00.Force' but when the pbs_server starts
> > > the logs say 'falcon00.force':
> >
> > DNS is case insensitive and almost always reports things in lower case.
> > Never make a UNIX or DNS machine name in mixed case, it will just cause
> > problems such as this.
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