> Can we conclude this with: > > Supported platforms for CloudStack 4.0 KVM HyperVisors: > - Ubuntu 12.04 > - CentOS 6.2 > - CentOS 6.3 > - RHEL 6.2 > - RHEL 6.3
Seems fine to me. > > If people want to run on a different platform, we require: > - libvirt 0.9.4 > > That is actually it, most of the heavy lifting is done by libvirt. > > The upgrade process for Hypervisors: > 1. Put in maintenance mode > 2. Make sure all instances are migrated away 3. Upgrade the underlying > Operating System 4. Upgrade CloudStack Agent For this to work you'll have to be able to live migrate where source host OS version is lesser than destination host OS version. Does anyone know if that's actually supported by Ubuntu 10.04/12.04 and RHEL 6.{0,1}/RHEL 6.{2,3}? -kevin