[glue-wg] VOTE by 8/1: GLUE 2.1 for describing cloud resources?

[Florido Paganelli]

Hi all, Maria

On 2014-07-29 10:28, Maria Alandes Pradillo wrote:
> Dear all,
> 
> The only problem I see if we go for a 2.1 version is that we need to
> understand how to deploy all this in the hierarchical BDII model.
> What happens if a site BDII hasn´t upgraded the schema to 2.1, it
> only understands 2.0, and it queries a cloud resource which supports
> 2.1? will it fail? Or will it fail to publish only those new entities
> that do not exist yet in 2.0? The same scenario goes for a 2.0 top
> BDII trying to query 2.1 site BDIIs. I guess until the whole grid
> hasn´t moved to 2.1 we may have some inconsistent things published
> around. I haven´t tested this so I´m not sure what happens when you
> want to publish something in LDAP that is not declared in the LDAP
> schema file.

It is not possible to add ldap entities to an LDAP database if these
entities do no refer to objects in the schema. In short, any BDII using
the 2.0 schema will reject all 2.1-specific objects, that is, the cloud
stuff.

> 
> I guess this is the reason why we had two different LDAP trees for
> GLUE 1.3 and GLUE 2.0, right?
> 

No, I think that was just to keep things tidy since Glue 1.2/1.3 is
very, very different from GLUE2. It was mainly indended to ease scoping
queries AFAIK.

Cheers,
Florido

> Regards, Maria
> 
>> -----Original Message----- From: glue-wg-bounces at ogf.org
>> [mailto:glue-wg-bounces at ogf.org] On Behalf Of
>> david.meredith at stfc.ac.uk Sent: 29 July 2014 10:18 To: John-Paul
>> Navarro; glue-wg at ogf.org Subject: Re: [glue-wg] VOTE by 8/1: GLUE
>> 2.1 for describing cloud resources?
>> 
>> Hi all, I would be in favour of adding new 2.1 cloud entities
>> provided:
>> 
>> *	2.1 only adds new (cloud) implementations that are derived from
>> the 2.0 abstract entities. *	There are no changes to the 2.0
>> entities, especially no changes to the core abstract entities.
>> 
>> This is important for the XSD rendering (and other renderings too I
>> imagine). For an XSD rendering, the new cloud entities would be
>> defined using a new namespace defined in a separate XSD. The new
>> cloud entities would need to extend the existing abstract BaseTypes
>> defined by the 2.0 element inheritance mechanism.  An XML instance
>> doc would still use the existing 2.0 '<GLUE2>' root element, and
>> would import the new cloud entities to be nested under '<GLUE2>' 
>> using the existing SubstitutionGroup mechanism.  When validating an
>> instance doc, both the 2.0 XSD and 2.1 cloud extensions XSD would
>> be needed for validation (quite normal).
>> 
>> Thanks, David
>> 
>> 
>>> -----Original Message----- From: JP Navarro
>>> [mailto:navarro at mcs.anl.gov] Sent: 23 July 2014 16:36 To: OGF
>>> GLUE Working Group Subject: [glue-wg] VOTE by 8/1: GLUE 2.1 for
>>> describing cloud resources?
>>> 
>>> GLUE Working Group:
>>> 
>>> We have been discussing two options for using the GLUE schema to
>>> describe cloud services.  You may review these options here: -
>>> http://redmine.ogf.org/dmsf_files/13294?download=
>>> 
>>> By August 1, please vote for one of the following options:
>>> 
>>> 1) Use GLUE 2.0 with a Community Practice Profile that details
>>> how to
>> describe
>>> cloud infrastructure using the existing 2.0 entities 2) Develop
>>> GLUE 2.1 adding new Cloud Computing entities (would be 100% 
>>> backward compatible with GLUE 2.0 for non-Cloud entities)
>>> 
>>> For reference, a preliminary GLUE 2.1 Specification is available
>>> here: -
>>> http://www.ogf.org/pipermail/glue-wg/2014-January/001527.html
>>> 
>>> Regards,
>>> 
>>> JP _______________________________________________ glue-wg
>>> mailing list glue-wg at ogf.org 
>>> https://www.ogf.org/mailman/listinfo/glue-wg
>> -- Scanned by iCritical. 
>> _______________________________________________ glue-wg mailing
>> list glue-wg at ogf.org https://www.ogf.org/mailman/listinfo/glue-wg
> _______________________________________________ glue-wg mailing list 
> glue-wg at ogf.org https://www.ogf.org/mailman/listinfo/glue-wg
> 


-- 
==================================================
 Florido Paganelli
   ARC Middleware Developer - NorduGrid Collaboration
   System Administrator
 Lund University
 Department of Physics
 Division of Particle Physics
 BOX118
 221 00 Lund
 Office Location: Fysikum, Hus B, Rum B313
 Office Tel: 046-2220272
 Email: florido.paganelli at REMOVE_THIShep.lu.se
 Homepage: http://www.hep.lu.se/staff/paganelli
==================================================