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Re: [Xgrid] Why is this not possible? Ernest N. Prabhakar, Ph.D. Tue May 12 14:00:58 2009

Hi Burt,

Perhaps a silly question, but are you sure all your agent machines can see and connect to the medics.crulrg.net ?

You could try running a job with "host -a  medics.crulrg.net" to check.

-- Ernie P.

On May 12, 2009, at 12:39 PM, Burt Crépeault wrote:

Here's a scenario I'm trying to run using Xgrid:

I have two shell scripts:

#!/bin/bash
# /Network/Xgrid/test1.sh
echo "This is test1.sh, run as:"
whoami
/usr/bin/xgrid -h medics.crulrg.net -auth Kerberos -job submit /bin/ bash /Network/Xgrid/test2.sh

and

#!/bin/bash
# /Network/Xgrid/test2.sh
echo "This is test2.sh"
whoami


When I submit the first shell script as an Xgrid job, logged in as admin (diradmin in the Kerberos realm), using this command:

#/usr/bin/xgrid -h medics.crulrg.net -auth Kerberos -job submit /bin/ bash /Network/Xgrid/test1.sh

I get this:

This is test1.sh, run as:
diradmin
Error returned by gss_init_sec_context:
major error <1> Unspecified GSS failure. Minor code may provide more information
      minor error <1> No credentials cache found
2009-05-12 15:25:57.349 xgrid[6539:10b] error: could not connect to medics.crulrg.net (reason unknown)

Why can't this be done? I'm basically trying to nest jobs but somehow Xgrid doesn't seem to like it. This most likely has to do with Kerberos authentication. However, upon looking at the Kerberos tickets, I see

# klist
Kerberos 5 ticket cache: 'API:Initial default ccache'
Default principal: [EMAIL PROTECTED]

Valid Starting     Expires            Service Principal
05/12/09 11:53:30  05/12/09 21:53:30  krbtgt/[EMAIL PROTECTED]
    renew until 05/19/09 11:53:30
05/12/09 11:53:31  05/12/09 21:53:30  xgrid/[EMAIL PROTECTED]
    renew until 05/19/09 11:53:30

which to mee appears ok. Where's the problem?

LeBurt.
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