[GE users] qstat communication problems

reuti reuti at staff.uni-marburg.de
Fri Dec 18 23:48:47 GMT 2009


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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