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

[Carsten.Friedrich at csiro.au]

> Furthermore, as an OpenNebula user I'm interested in Swift and whether
> it can be integrated into OpenNebula as storage for VMs.

This is a question I'm also very interested in as OpenNebula currently does not have an cloud storage component (either S3 or Rackspace compatible). Anyone got any experience with Swift or OpenNebula + Swift integration?

> And the only reason why Nasa and Rackspace have not
> considered OpenNebula as their new platform might be the effort that
> already went into the various components from which OpenStack was
> "composed". 

NASA was using Eucalyptus before and as far as I know Nova is a complete rewrite from scratch. 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). 

> I like, that OpenNebula doesn't want to impose certain constraints on the users regarding his or her infrastructure. It integrates itself very 
> well into existing setups. As a good toolkit should do.

I very much agree. I would however like to see better support for internal hybrid clouds (currently hybrid clouds only work with EC2).

Carsten