Re: [Condor-users] condor_master dying in 7.6.9

[Brian Candler <B.Candler@xxxxxxxxx>]

On Sat, Aug 18, 2012 at 04:26:51PM +0100, Roderick Johnstone wrote:
> I'm seeing my condor_master die on startup in 7.6.9 on one of my
> systems. I'm using the x86_64 rpms from the condor rhel6 repo on rhel6.3
...
> A fragment of the MasterLog file is given below. I note the WARNING
> message, but don't see a problem with the name configuration for the
> host thats giving this problem but I might have overlooked something. It
> does seem strange that it should think that localhost6 is related to an
> ipv4 address though.

What does your /etc/hosts show for localhost and localhost6? i.e. output
from

    grep -i localhost /etc/hosts

And also for each of the interface addresses on your box,

    grep x.x.x.x /etc/hosts

There appear to be two problems here:

1. Whatever IP address it has found, condor has done a reverse lookup to find
   "localhost6" and then a forward lookup found something else.

   7.6.9 is now paranoid about matching forward and reverse DNS, in case
   you have configured access controls as *.yourdomain.com and a third
   party decides to put foo.yourdomain.com in their reverse DNS.

2. Condor crashing out under this situation (clearly it should either
   continue or terminate gracefully)

Running condor_master under strace (strace -f condor_master 2>strace.txt) or
gdb (gdb condor_master // run // bt) may show some more info.

Regards,

Brian.