[one-users] OpenNebula + Swift ? was: RE: [one-user] OpenNebula vs. OpenStack

[opennebula at nerling.ch]

Hallo everybody.
I could think on a HA opennebula install since the version 2.0
You may build it on top of BRDB and syncronization of the image  
repositories, but it would work.
Br..
Marlon

Quoting "Ruben S. Montero" <rubensm at dacya.ucm.es>:

> HI
>
> Some thoughts:
>
>> Comparing the designs it seems that one distinguishing factor is  
>> that OpenNebula has a central cloud controller which is a potential  
>> single point of failure and potentially a bottleneck when scaling  
>> the size of the cloud (don't know if this is an issue in practice).  
>> Nova design seems to be more loosely coupled (but I might be wrong  
>> on this, as information on the web about Nova at this stage does  
>> not seem always easy to understand or be consistent with other  
>> information you find).
>
> Single point of failure: As far as I know the Nova/Eucalyptus
> Cloud-Cluster controller architecture does not provide any HA /failure
> tolerance feature. In this sense the Cloud controller is the single
> point of failure (I may be wrong, though). There are some HA work
> undergoing for the next release of OpenNebula, as well as some
> configurations that can be applied now to improve the failure
> tolerance of OpenNebula.
>
> Scalability:  Note that the systems that will impact scalability (i.e.
> monitoring, image distribution mainly) does not need to follow a
> single tier architecture. In fact large scale OpenNebula deployments
> uses specialized monitoring systems (e.g Ganglia which is multi-tier)
> or high-formance distributed FS.  Additionally, we are working in some
> OpenNebula-2-OpenNEbula drivers to further federate cloud
> infrastructures. Although the goal of this developments are not
> scalability but datacenter federation.
>
>
> Cheers
>
> Ruben
>
> --
> Dr. Ruben Santiago Montero
> Associate Professor (Profesor Titular), Complutense University of Madrid
>
> URL: http://dsa-research.org/doku.php?id=people:ruben
> Weblog: http://blog.dsa-research.org/?author=7
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