[GE users] qstat communication problems

russray rray at semtech.com
Thu Jan 7 20:06:28 GMT 2010


Finally getting back to this after the holidays.  No iptables on either the qmaster, executable, or submission machines.

reuti <reuti at staff.uni-marburg.de> wrote on 12/18/2009 06:48:47 PM:

> Am 18.12.2009 um 23:04 schrieb russray:
>
> >
> > I've had a small farm running for several months now, but after
> > what I think was  a series of yum updates, my submission nodes can
> > no longer talk to the qmaster.  When I type qstat, I get the
> > following:
> >
> > error: commlib error: access denied (client IP resolved to host
> > name "". This is not identical to clients host name "")
> > error: unable to contact qmaster using port 6444 on host
> > "us03grid1.semnet.dom"
>
> Any firewall suddenly in place and/or changing the allowed ports?
>
> -- Reuti
>
>
> > I can ping and ssh to us03grid1, so that communcation seems ok.  If
> > I use gethostbyname, gethostbyaddr, gethostname, I get the
> > following from the machines in question (using one of them as an
> > example):
> >
> > $SGE_ROOT/utilbin/lx24-x86/gethostbyname us03linux1
> > Hostname: us03linux1.semnet.dom
> > Aliases:  us03linux1
> > Host Address(es): 192.168.201.61
> >
> > $SGE_ROOT/utilbin/lx24-x86/gethostbyaddr 192.168.201.61
> > Hostname: us03linux1.semnet.dom
> > Aliases:  us03linux1
> > Host Address(es): 192.168.201.61
> >
> > $SGE_ROOT/utilbin/lx24-x86/gethostname
> > Hostname: us03linux1.semnet.dom
> > Aliases:  us03linux1
> > Host Address(es): 192.168.201.61
> >
> > $SGE_ROOT/utilbin/lx24-x86/gethostbyname us03grid1
> > Hostname: us03grid1.semnet.dom
> > Aliases:
> > Host Address(es): 192.168.201.11
> >
> > Any clues on what changed to cause this and how to fix?
> >
> >
> > Russell Ray
> > rray at semtech.com
>
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