[Go-essp-tech] [esg-gateway-dev] [esg-node-dev] Re: Upcoming gateway/datanode coordination points

[philip.kershaw at stfc.ac.uk]

I suppose the broader issue is what SLA to define for services like these
that are global to the federation.  - What level of service do we need to
define for the registry service.

The other important one to consider is the PCMDI Attribute Service, since
its integral to access requests for CMIP5 secured data.  This has a more
critical requirement for availability than the registry service.

Cheers,
Phil

On 18/03/2011 10:21, "Estanislao Gonzalez" <estanislao.gonzalez at zmaw.de>
wrote:

>Hi Bryan,
>
>I don't think it is important to be available 24x7. I hope (probably is
>not developed, but will be pretty simple to do) that the Gateway caches
>the last registry document found, so that it can be still restarted
>without problem if precisely at that moment PCMDI's central registry is
>not available.
>
>The worst case scenario would be if someone wants to install a Gateway
>anew and at precisely that moment the registry is down. this could be
>solved by packing a "pre-cached" version of the registry with it (not
>that I think this will be that important, as adding this new Gateway to
>the federation will take time).
>
>So while the server is down, no new Gateway can be added to the
>federation, nor any other changes be done. But the federation itself
>should work without a hitch.
>
>But perhaps I'm missing something here...
>
>Thanks,
>Estani
>
>
>Am 18.03.2011 10:15, schrieb Bryan Lawrence:
>> Hi Gavin
>>
>> What will the API be to this registry?
>> What service level with PCMDI provide for it (since it's going to have
>> to work 24x7 globally)?
>>
>> Thanks
>> Bryan
>>
>>
>>> We will have a single registry, it should be served from PCMDI on
>>> pcmdi3.  The esgf nodes will all be coded to set pcmdi3 as the
>>> default location for this registry.  Indeed coordination with Nate
>>> and Neill and Rachana will have to take place.  I suspect that early
>>> next week will be that time.  Stay tuned, we'll make this happen.
>>> ;-)
>>>
>>> On 3/17/11 8:32 AM, philip.kershaw at stfc.ac.uk wrote:
>>>> So long as we are co-ordinated on this.  Will we have a single
>>>> registry for the federation or many?  I'm opening that question
>>>> more widely to all Š
>> --
>> Bryan Lawrence
>> Director of Environmental Archival and Associated Research
>> (NCAS/British Atmospheric Data Centre and NCEO/NERC NEODC)
>> STFC, Rutherford Appleton Laboratory
>> Phone +44 1235 445012; Fax ... 5848;
>> Web: home.badc.rl.ac.uk/lawrence
>>
>
>
>-- 
>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:  estanislao.gonzalez at zmaw.de
>
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