I posted this over at the CentOS forums, but I've had good luck with the fine folks here at LQ so I figured I'd ask here, too...
Maybe you guys can shed a bit of light on this because I have been doing tons of research and have yet to come to a simple conclusion. What I want to do is quite simple: Run a cluster of Xen-enabled CentOS 5 boxes. I need to support live migration, but beyond that I don't need anything extreme between the boxes themselves such as shared storage, etc. From what I understand right now, this is how I think it would go, assuming CentOS 5 is installed on two boxes:
- Get both boxes booting the Xen kernel
- Configure each box for proper use with RHCS (still haven't found a straight-forward tutorial for this; the official documentation is ridiculously verbose)
- Create DomU's on servers
Am I on the right track somewhat? The biggest issue I'm having is "Xen Clustering" generally refers to clustering VMs on a single box, for instance to be used in parallel computing tasks. On the flip side, I can find information on RHCS by itself, but no information on how they can easily work together, i.e. node migration between Dom0's. If anyone can shed some light on this, or just point in the direction of documentation that makes sense in this context, I would greatly appreciate it.