I know this question pops up on a regular with this forum, but my best search engine
manipulation turned up only to back up the engine configuration to a shared storage, then
restore it on the other cluster using hosted-engine --deploy
--restore-from-file=backup.tar.gz. While this is workable (it's by no means the end of
the world for me), I wanted to ask if a different or better way has been or will be
implemented. Here's why:
I am trying to move to oVirt from ESXi (the latter has outgrown its usefulness to me and
has become increasingly more difficult to maintain for my purposes, as VMware is intent on
pushing newer CPU technologies with each new version, leaving perfectly good systems with
perfectly good processors and hardware out in the cold. On top of that, VMware won't
let you easily do vGPU or GPU passthrough without significant risk to the system
stability.). I started with a VM on the ESXi host as a proof-of-concept for setting up and
configuring oVirt to run the hosted engine and a couple of VMs. This worked after some
great work from the members here on the forum (shout out to Tomas and Arik!). This initial
cluster is an Intel CPU based cluster, as the server its VM is running on is an R720. This
is the server I need to migrate off of (I have a plan). So I set up in VMware Workstation
on my PC a second host in its own cluster (as that machine is an AMD CPU machine). Now, I
know I can't live migr
ate between clusters to begin with, but I was hoping there was an easier way to move the
hosted-engine to the shared NAS storage, put the hosted-engine in maintenance mode, shut
it down, change a variable or three with the --set-shared-config option (if that applies),
run some script on the other host that starts the hosted-engine on that host in that
cluster, bringing it out of maintenance mode automatically once up and verified stable.
I understand that process COULD be slower and more fraught with danger than just simply
backing up the config to shared storage and deploying on the AMD host with the restored
config, but on the off-chance it ISN'T I wanted to explore that possibility. Besides,
it would be a nice feature of the hosted-engine and oVirt as a whole if you could
eventually right-click the hosted-engine VM in the portal and click "Move to new
cluster...", which would automate that entire process for you.
All that said, I'm working on one last problematic VM import before I start the
arduous process of pulling everything off of ESXi and reformatting the R720 for oVirt.
Hopefully that goes smoother than my start with oVirt. :)