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From Ram Ganesh <Ram.Gan...@citrix.com>
Subject RE: [DISCUSS] Dedicated Resources: Dedicate Pods, Clusters, Hosts to a domain
Date Wed, 26 Dec 2012 18:27:42 GMT
> -----Original Message-----
> From: David Nalley [mailto:david@gnsa.us]
> Sent: 20 December 2012 20:49
> To: cloudstack-dev@incubator.apache.org
> Subject: Re: [DISCUSS] Dedicated Resources: Dedicate Pods, Clusters,
> Hosts to a domain
> 
> On Thu, Dec 20, 2012 at 1:19 AM, Deepti Dohare
> <deepti.dohare@citrix.com> wrote:
> > Hi,
> >
> > Currently in CloudStack architecture, domains can have dedicated
> zones but not pods, clusters or hosts.
> >
> > We are proposing this functionality in "Dedicated Resources" where a
> domain or a sub-domain can have dedicated pods,  clusters or hosts.
> >
> > Why we need this feature:
> > Dedicating a zone might be very expensive offering for an end users,
> whereas dedicating a pod, cluster or a host
> > may be more economical. This feature will allow Root-Admin to
> dedicate resources to a specific domain that needs
> > private infrastructure for additional security or performance
> guarantees.
> >
> > In this feature
> > - Root Admin should be able to dedicate a pod/cluster/host to a
> particular domain or sub-domain.
> > - Any users in that domain can access pod/cluster/host dedicated to
> their domain.
> > - No users outside that domain, can access the dedicated pod, cluster
> or hosts (eg. deploy instance on that pod/cluster/host).
> > - If there is no available resources in the dedicated
> pod/cluster/host, then CloudStack should fail the operation
> >   for a user in that domain.
> >
> > I have filed a jira request:
> https://issues.apache.org/jira/browse/CLOUDSTACK-681, to track this
> feature. Please let me know any comments and suggestions.
> >
> 
> 
> So I personally think hosts are too low of a level to do something
> like this. clusters makes sense, but not individual hosts.

	We do have users using host tags to dedicate a host though I am not sure about the use case.
But assume if I have 2 high end hosts then a department can dedicate one host say to QA team
and another one to development team thereby achieving isolation at the physical level.

> 
> Also - I think 90% of the benefit of this feature could be realized by
> changing the way we handle allocation on tagged resources. (e.g.
> require the tag to be present in the service offering to be deployed
> on a tagged resource)
> 

> --David

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