[ovirt-users] Re: oVirt: Migration recommendation to move from CentOS Stream 8 to 9
Hey Fabrice! Thanks for getting back! Got a few more questions
I have just finished a switch from oVirt 4.3 to oVirt 4.5 and CentOS
7 to Rocky 9.
The main gotcha is that the latest oVirt official release is broken, you should use the
nightly build.
You mean 4.5.5? In what way is it broken?
I did it without downtime, but choose to reinstall the engine on a
brand new server and restored the database.
For each host, I put each of them in maintenance mode, reinstalled the OS on it and then
reinstalled it in oVirt.
How did you manage to do this without downtime? If you
reinstalled the hosts how did you keep your VMs online?
Right now I have two nodes/hosts running on two different machines. Could I just do this:
1) Move all my VMs to one node.
2) Fully reinstall (new OS, oVirt engine) the empty host.
3) Backup the engine on the old host.
4) Import the backup on the new host.
5) Somehow get my VMs moved with or without downtime.
6) Reinstall the the second/old host.
But how would I get my VMs from the old to new host in this scenario?