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

[philip.kershaw at stfc.ac.uk]

Hi Luca,

I've written some instructions here:
http://ndg-security.ceda.ac.uk/wiki/Howtos/ESGFDownloadScript

Feel free to lift or adapt for the ESGF wiki :)  Note that the Java
WebStart link and instructions refer to our ESGF customised version rather
than the generic one from the MyProxy web site that I have referenced.

Cheers,
Phil

On 15/07/2011 10:06, "Cinquini, Luca (3880)" <Luca.Cinquini at jpl.nasa.gov>
wrote:

>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/obs
>>>ervations/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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