KVM on a Cluster?

[Sander van Vugt]

Hi,

Yes, this is perfectly possible. I'm just finalizing a book on how to do
that trick with Xen machines. But from cluster perspective, it
absolutely doesn't matter which machine type to use. Look for the
following:

openais + pacemaker HA clustering
shared storage on a SAN, based on OCFS2 so that it is accessible by
multiple nodes simultaneously
enough RAM in all the host machines

HTH,
Sander

On Wed, 2010-02-10 at 11:09 -0800, Mat wrote:
> Hello,
> 
> The cluster stack found in the wiki[1] looks very promising and I'm 
> looking forward to testing it out. One thing I've been thinking about 
> lately and looking for online is the possibility of running a virtual 
> machine with KVM on top of a cluster.
> 
> Is it possible, or even practical to run an application like KVM on a 
> cluster? The reason driving me to think about this would be hardware 
> redundancy, and the ability to make "live" backups of a virtual machine 
> by isolating it from the others (a script that temporarily disables the 
> network?) and shutting it down for a snapshot.
> 
> Unfortunately, I have very little practical knowledge and experience 
> when it comes to clusters, so please feel free to enlighten me if I'm 
> proposing something crazy.
> 
> [1] https://wiki.ubuntu.com/ClusterStack/LucidTesting
> 
> Thanks.
> matoc
>