[occi-wg] Extraction of requirements

[Sam Johnston]

Afternoon all,

Currently traveling so my contributions have been limited this week
(including missing the call as I was on a very busy fast train).

I personally don't see any reason to constrain implementors and reckon that
a registry of attributes (e.g. cpu, mincpu, maxcpu, etc.) ought to suffice
in terms of making requests. If someone wanted to use a more verbose
representation (e.g. WS-I) then I would envisage catering for this need by
embedding it as an opaque payload in the same way that we can carry OVF for
clouds that support it.

For monitoring I envisage a very simple registry of the most common
attributes (e.g. memory, cpu, etc.) as well as an equally simple facility to
allocate namespaces (e.g. SNMP OIDs, Microsoft perfmon counters, etc.).

In both cases I seek a balance of simplicity and flexibility (primarily for
enterprise/private cloud users), thus giving significant room for innovation
(e.g. support of WS-Agreement) without sacrificing interoperability
(implementations can simply ignore a lot of what they don't understand
provided they understand the bare minimum of required terms).

Sam

On Fri, May 1, 2009 at 10:33 AM, Edmonds, AndrewX <andrewx.edmonds at intel.com
> wrote:

> Yes I would also support the inclusion of Monitoring.
> Although users can access monitoring data from within a VM these may not be
> accurate. It would be very useful if a provider would expose certain metrics
> about a VM or set of VMs that are obtained directly through the hypervisor.
> What this then might allow users to do it to confirm that what providers are
> giving them is in fact what they can see from metrics gathered from the VM.
> There was hints by guys in SAP (here [1]) about the formation of some
> working group/standard around this type of monitoring notion applied against
> IaaS.
>
> Andy
>
> [1]
> http://groups.google.com/group/cloudforum/browse_thread/thread/8ab6090fa0ec121c <- see Steve Winkler's post
>
> -----Original Message-----
> From: occi-wg-bounces at ogf.org [mailto:occi-wg-bounces at ogf.org] On Behalf
> Of Luis Rodero-Merino
> Sent: 30 April 2009 16:36
> To: Ignacio Martin Llorente
> Cc: occi-wg at ogf.org
> Subject: Re: [occi-wg] Extraction of requirements
>
> We would add
>
> Identifications/References
> Monitoring
>
> The first would deal with the requirements regarding how elements are
> to be identified/referenced (which elements have an id? nets, images
> and VMs only? or also mems, disks...). Regarding 'Monitoring', we
> think that's an important aspect that also should be included in this
> specification.
>
> Regards,
> Luis
>
> On Wed, Apr 29, 2009 at 6:33 PM, Ignacio Martin Llorente
> <llorente at dacya.ucm.es> wrote:
> > Hi,
> >
> > We are going to start with the evaluation of the submitted use cases.
> > I am planing to create a table summarizing requirements for the
> > different use cases with the following entries:
> >
> > A. Functional Requirements
> > VM Description
> > VM Management
> > Network Management
> > Image Management
> >
> > B. Non-functional Requirements
> > Security
> > Quality of Service
> > Others
> >
> > Any suggestion?
> >
> > Ignacio
> > --
> > Ignacio M. Llorente, Full Professor (Catedratico):
> http://dsa-research.org/doku.php?id=people:llorente
> > DSA Research Group:  web http://dsa-research.org and blog
> http://blog.dsa-research.org
> > Globus GridWay Metascheduler: http://www.GridWay.org
> > OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > occi-wg mailing list
> > occi-wg at ogf.org
> > http://www.ogf.org/mailman/listinfo/occi-wg
> >
>
>
>
> --
> -----------------
> Luis Rodero, PhD.
> Junior Researcher @ Telefónica I+D
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