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. 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.
Le 20 nov. 2024 à 18:08, dadamysus--- via Users <users@ovirt.org> a écrit :
I have inherited the admin duty to maintain a a small oVirt cluster featuring 2 nodes running oVirt 4.5.4 based on the CentOS Stream (using the official Node ISOs) running on physical machines, including a hosted engine. Sadly, the documentation is a bit on the "light side" and the official oVirt documentation can be overwhelming at times.
As CentOS Stream 8 is no longer supported we would like to migrate the nodes to either CentOS Stream 9 using the NG node ISOs or to Rocky Linux 9 - but I guess using the official ISOs seems like the smoothest path. Still, I would like to know what the general steps are to migrate without setting up a entirely fresh cluster. Is it possible to migrate by setting up an CentOS Stream 9 node in the existing cluster and to deploy a new engine from there? Is it possible to migrate VMs without downtime in this process? Ideally, does anyone have some kind of step-by-step guide to get from CentOS Stream 8 to 9 using the oVirt Node ISOs? Or is it possible to upgrade the existing nodes to CentOS Stream 9 and deploy a new hosted engine from there without creating an entirely new node?
And yeah, I have already searched this list for answers (https://lists.ovirt.org/archives/list/users@ovirt.org/thread/BE5BS4MJSJ4F4ME...) but that thread lacks some the mentioned details. _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/BX3DZUQ5KFL5M4...