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/BE5BS4MJSJ4F4MEL246YTQ434K46XWF4/#BE5BS4MJSJ4F4MEL246YTQ434K46XWF4) > but that thread lacks some the mentioned details. > _______________________________________________ > Users mailing list -- users@ovirt.org > To unsubscribe send an email to users-le...@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/BX3DZUQ5KFL5M4LXXAMJIV2E3D7XMV26/ _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@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/OS5ERHFIGMCYF2DYCVL53DOAQZ5FQBMB/
