[occi-wg] Cluster kind or such

[Sam Johnston]

On Tue, May 11, 2010 at 6:54 PM, Edmonds, AndrewX <andrewx.edmonds at intel.com
> wrote:

> Great to have another OCCI adopter on board!
>

+1


> Yes currently there is no _explicit_ representation of a cluster or a
> "system of compute entities" in the specification. What I would suggest is
> two-fold. First, have a look at the section on Categories.


+1 - categories are definitely the best way to model things like clusters,
locations, machine types, operating systems, administrative groupings, etc.

Sam


> -----Original Message-----
> From: occi-wg-bounces at ogf.org [mailto:occi-wg-bounces at ogf.org] On Behalf
> Of Csom Gyula
> Sent: Tuesday, May 11, 2010 3:38 PM
> To: occi-wg at ogf.org
> Subject: [occi-wg] Cluster kind or such
>
> Hi!
>
> We decided to go with the OCCI interface within our cloud implementation
> (and just to be specific we chose OpenNebula as our CMS platform). We hope
> that our selection will prove to be a long term one, thus we'd like to
> adhere to the OCCI specification as much as possible. Meanwhile we have to
> deal with clusters, too, nost just single compute entities. My main question
> is whether you have any plan to incorporate compute systems (like clusters)
> within the OCCI specification?
>
> ---
>
> In our context we'll have to deal with different types of clusters such as
> compute clusters (with one frontend, nas and many compute nodes) and load
> balancing clusters (with one load balancer, many application servers and
> backend storage). In many scenarios these systems must be handled as one
> single entity (eg. must be acquired, deployed at once, must be deleted at
> once, etc.). After all one might consider them as resouces, just like any
> others (compute, storage, and network).
>
> So the question is whether you plan to introduce compute systems or such
> into the specification?
>
> ---
>
> If yes, what will be the shape model? main entities and relations?
>
> For instance in our context all clusters will share the same simple
> structure where a system can be characterized through roles, and node counts
> (per roles). This might be handled by 1 additional main entity (system), and
> 3 pseudo entities (role, compute link and system link).
> See the attached UML diagram: cluster.png. Of course more complex scenarios
> are also possible (peer-to-peer compute relation, system of systems, etc.)
> but such systems are out of our current scope...
>
> ---
>
> In the spec you put the following: "A simple peer review process is
> available for extending the registries which should be used where possible."
> My last question is regarding this
> process:
>
> How does the above peer review work? When and where should someone go to
> make his request?:)
>
> Cheers,
> Gyula
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