[Go-essp-tech] support for OpenDAP enabled clients?

[Estanislao Gonzalez]

There's some description buried inside the Gateway... we might want to 
link there from the main page. AFAIK is only linked to the download 
page, where you can download the wget script.

http://ipcc-ar5.dkrz.de/help/download-help.htm#MyProxyLogon

And of course the getting started guide:
http://cmip-pcmdi.llnl.gov/cmip5/data_getting_started.html?submenuheader=3

Cheers,
Estani
Am 15.07.2011 11:06, schrieb Cinquini, Luca (3880):
> Hi Jamie,
> 	the certificate must be obtained from a previous call to a MyProxy server, where you log in with your username and password.
>
> Question for everybody: has anybody written instructions on how to download the MyProxy client and obtain a certificate ? We probably need a short tutorial on the ESGF wiki...
>
> thanks, luca
>
> On Jul 14, 2011, at 10:51 AM, Jamie Scott wrote:
>
>> Thanks for the information.  I tried your wget example, but I must be missing something.  Where do I provide the authentication (user:password)?
>> Is this user.pem a file I need to create?
>>
>> I'm not sure I understand what's going on with this syntax : "--certificate user.pem --private-key user.pem"
>>
>> -Jamie
>>
>>
>> On Jul 14, 2011, at 10:05 AM, Cinquini, Luca (3880) wrote:
>>
>>> Hi Jamie,
>>> 	we are working on that... the software is all there, but it needs to be deployed and configured uniformly across ESG. In short, what needs to happen is the following:
>>>
>>> a) each Node exposes data via an Opendap server (typically, the TDS)
>>> b) each Node is configured with the PKI-based security filters for authentication and authorization)
>>> c) the client of choice needs to be relinked with a version of the library (Netcdf-python or pydap) that supports ESG security - essentially, following redirects, send certificates and cookies
>>>
>>> For example, this is a working example of an opendap retrieval command via the wget client to the JPL TDS:
>>>
>>> wget --certificate user.pem --private-key user.pem http://esg-datanode.jpl.nasa.gov/thredds/dodsC/esg_dataroot/obs4MIPs/observations/atmos/ta/mon/grid/NASA-JPL/AIRS/v20110608/ta_AIRS_L3_RetStd-v5_200209-201105.nc.dods?ta[0:1:0][0:1:0][0:1:0][0:1:0]
>>>
>>> If you have a client that supports c), you could start trying to access the data from those nodes that have a) and b) configured already.
>>>
>>> thanks, Luca
>>>
>>>
>>> On Jul 14, 2011, at 9:45 AM, Jamie Scott wrote:
>>>
>>>> Is there support for accessing data on ESG with OpenDAP enabled clients instead of downloading everything with a web browser or wget?
>>>>
>>>> Thanks,
>>>>
>>>> Jamie Scott
>>>>
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-- 
Estanislao Gonzalez

Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany

Phone:   +49 (40) 46 00 94-126
E-Mail:  gonzalez at dkrz.de