[GE users] new exec host grief

lonegroover james.gibbon at nottingham.ac.uk
Fri Feb 13 13:38:17 GMT 2009

Hi Craffi,

Thanks for the reply.

On Fri, 13 Feb 2009 07:23:13 -0500
craffi <dag at sonsorol.org> wrote:

> Hi James,
> The root cause seems to be that the compute node can't get to port 701  
> on host "linux6" - you should look into the standard firewall,  
> routing, DNS lookup and other issues that typically can cause "can't  
> get to host X, port Y" type problems.

Yes that was my thought yesterday and I did look into that - I should
have made that clear, sorry.

Anyway: there is no firewall between the exec host and the master,
and I can telnet to port 701 from exe host -> master.

DNS and /etc/hosts are correct on both machines, and the hostname as
represented in act_qmaster resolved to the correct IP address. There
are a few execd_messages log files in /tmp/, but they only restate
the same information, ie

02/12/2009 20:54:51|  main|minitel|E|can't connect to service
02/12/2009 20:54:51|  main|minitel|E|can't get configuration from qmaster -- backgrounding

I've ensured all the gridengine processes are zapped on minitel (the
exec host) before attempting to restart gridengine-exec.

Nothing relevant-looking in the qmaster's logs.

One possibly significant thing is that the entry in the 'exec hosts' 
directory (/spool/qmaster/exec_hosts) on the qmaster has the FQDN of
minitel as its filename, and in its 'hostname' field .. ?


James Gibbon BSc MBCS

System Administrator
Brain and Body Centre
University of Nottingham
Nottingham NG7 2RD
+44 115 846 8255

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