Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Folks, I've been running a 2-node HA cluster for several years - Xen VMs backed by DRBD volumes + pacemaker for failover. I've recently added 2 newer nodes, and I'm trying to figure out the most straightforward way to migrate a couple of production VMs from the old hardware to the new hardware - with minimum outage. Just to complicate things a bit, I'm running DRBD 8.0.14 - which doesn't support a 3-node configuration. Any suggestions re. a sequence of operations that allows me to: 1. install latest versions of everything (Debian, DRBD, Xen, Pacemaker, etc.) on the new nodes (easy) 2. replicate data volumes to the new nodes while the VMs continue to run on the old nodes 3. migrate the VMs to the new nodes 4. decommission the old nodes - all with minimal downtime for the VMs, and minimal (or no) period where I don't have a backup copy of the data? Thanks much, Miles Fidelman -- In theory, there is no difference between theory and practice. In<fnord> practice, there is. .... Yogi Berra