[gt-user] credential refresh in GT4.0.5

[Massimo Cafaro]

Dear all,

I am experiencing the following problem in GT4.0.5 using the prews GRAM.








The same code was working without any problems in previous GT releases.
Any clue about?

I am i doing something wrong due to changes in the GT4.05 prews GRAM?

Thank you in advance,
Massimo




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 Dept. of Engineering for Innovation        SPACI Consortium
 University of Salento, Lecce, Italy

If my server tries to refresh the credentials for a long running job before the proxy expires (it uses its own host credentials), it gets back the following error from the jobmanager: an authentication operation failed. However, I am sure that the credential used is valid and is correct because the server is downloading a fresh proxy from a MyProxy server, and the credential is obtained through gss_import_cred(). After importing the credential, it is checked using gss_inquire_cred(), gss_display_name() etc to validate the distinguished name and the credential lifetime. I am using the gcc32dbgpthr flavor, and refreshing the credentials using globus_gram_client_register_job_refresh_credentials(). In particular, besides setting the credential to be used as the second argument, I am also setting the third argument which is the globus gram client attribute. The attribute is at first initialized using globus_gram_client_attr_init(), then I use globus_gram_client_attr_set_credential() to set for the attribute the same credential I will use for the refresh operation (the same used for the second argument). I am sure that the distinguished name associated to the credential is in the remote machine grid-mapfile and is authorized (the same proxy downloaded from Myproxy is ok to submit a job to the remote machine). I am also sure that the jobid (the irst argument of the globus_gram_client_register_job_refresh_credentials() function) is correct (using globus-job-status I see the job is active). ************************************************************************ ******************************* Massimo Cafaro, Ph.D. National Nanotechnology Laboratory (NNL/CNR-INFM) Assistant Professor Euro- Mediterranean Centre for Climate Change Via per Monteroni Voice +39 0832 297371 Fax +39 0832 298173 73100 Lecce, Italy Web http://sara.unile.it/~cafaro

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