Re: [gridsam-discuss] National Grid Service & GridSAM

[Shaon, A. (Arif) <ari...@st...>]

Thanks.  I have installed the certificates as per the instructions in
the OMII manual.  But I still get the same error.  I have just sent an
email to the NGS to check if my NGS certificate would suffice for
accessing the GridSam server.

Thanks again.

Arif


-----Original Message-----
From: Vesselin Novov [mailto:ve...@do...] 
Sent: 05 November 2008 10:39
To: Shaon, ABS (Arif)
Cc: gri...@li...
Subject: Re: [gridsam-discuss] National Grid Service & GridSAM

Arif,

The myproxy certificate is used by the GridSAM Server to submit your job

to Globus.
There is another set of certificates needed for a GridSAM Client to 
submit to a GridSAM Server.
This is actually the authentication mechanism of the OMII 
Client/Container where the GridSAM Client/Server run.
The mechanism requires valid x509 certificates/keys in the JKS keystores

created during installation at '<omii_client_dir>/omii.ks'
and '<omii_server_dir>/omii.ks'.
It's possible that the NGS certificate you're given is to be used for 
both GridSAM Server and Globus, check with the NGS admins.
If this is so, check the OMII documentation on how to set/configure the 
authentication on your client side at: 
"http://www.omii.ac.uk/docs/3.4.2/installation_guide/omii_3_installation
_and_setup_guide.htm"

--Vesso

Shaon, ABS (Arif) wrote:
>
> Hi List,
>
>  
>
> I am trying to use a GridSam client to submit a test sleep job to 
> NGS.  Steps I used are as follows:
>
>  
>
> 1. Acquired a user certificate from NGS
>
> 2. Uploaded the certificate to myproxy using the Java tool available 
> on the NGS site
>
> 3. Installed OMII and GridSAM on my machine
>
> 4. Tried to execute the command: gridsam-submit -myproxy -myproxyhost 
> "myproxy.grid-support.ac.uk" -myproxyuser "username" -s 
> "https://gridsam.besc.ac.uk:18443/gridsam-oxford/services/gridsam" -j 
> /home/ashaon/ngs_stuff/omii-uk-client/gridsam/data/examples/sleep.jsdl
>
> 5. Error received:
>
>  
>
> 2008-11-03 16:24:52,746 FATAL [GridSAMSubmit] (main:) unable to submit

> job: failed to submit job: ; nested exception is:
>
>         javax.net.ssl.SSLException: Connection has been shutdown: 
> javax.net.ssl.SSLHandshakeException: 
> sun.security.validator.ValidatorException: PKIX path building failed: 
> sun.security.provider.certpath.SunCertPathBuilderException: unable to 
> find valid certification path to requested target
>
>  
>
>  
>
> Any help with this would be greatly appreciated.
>
>  
>
> Many thanks in advance.
>
>  
>
> Regards
>
> Arif
>
>  
>
>
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