[one-users] Match-making scheduler question

[Ignacio M. Llorente]

Hi

>
>
> I'm writing a survey on Clouds for research purposes. I have some questions
> related to the match-making scheduler that OpenNebula uses:
>
> 1. it's not clear for me if the placement policies can be configured per VM
> type or per VM instance, could you clarify this?
>

The Requirements and rank expressions are given in the VM description file
(template), so  they can be configured per VM instance. However when using a
cloud interface, the user can not specify these attributes and so are
defined by the cloud administrator per VM type.

>
> 2. are the placement policies configurable per cloud client or for the
> whole cloud platform?
>

Both scenarios can be implemented.

>
> 3. is it possible to configure the policies in such a way as to distribute
> a client's VMs across the physical hosts in such a way as to reduce the
> probability of platform failure as a result of hardware failure? Is this
> do-able without modifying the source code of OpenNebula?
>

Yes

Cheers

>
>
> Thanks very much,
>
> Adrian Muresan
>
>
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>
>


-- 
Ignacio M. Llorente, Full Professor (Catedratico):
http://dsa-research.org/llorente
DSA Research Group:  web http://dsa-research.org and blog
http://blog.dsa-research.org
OpenNebula Open Source Toolkit for Cloud Computing:
http://www.OpenNebula.org
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