Upgrade from oVirt engine 3.6 to 4.0 - clean install of OS?

I have oVirt 3.6 running on CentOS 7 (one engine, two hosts). Upgrading to 4.0 seems to require a fresh, bare install of CentOS7 on the engine machine - is this a correct reading of the upgrade guide? It seems bizarre to me I have to wipe a perfectly fine running CentOS7 machine to do this - that seems so Microsoft. Say it isn't so...

Actually, the current version only supports ovirt 4.1 onwards. Thanks On Sat, Feb 9, 2019, 21:59 <jaherring@usa.net wrote:
I have oVirt 3.6 running on CentOS 7 (one engine, two hosts). Upgrading to 4.0 seems to require a fresh, bare install of CentOS7 on the engine machine - is this a correct reading of the upgrade guide? It seems bizarre to me I have to wipe a perfectly fine running CentOS7 machine to do this - that seems so Microsoft.
Say it isn't so... _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/KAVUEB3BRTHI26...

The upgrade guide says you must go 3.6 -> 4.0 -> 4.1 etc https://www.ovirt.org/documentation/upgrade-guide/chap-Upgrading_from_3.6_to... I just want to know if I really, really have to bare metal install of CentOS all over? That seems crazy in a Linux world.

On Sat, Feb 9, 2019 at 11:50 PM <jaherring@usa.net> wrote:
The upgrade guide says you must go 3.6 -> 4.0 -> 4.1 etc
https://www.ovirt.org/documentation/upgrade-guide/chap-Upgrading_from_3.6_to...
I just want to know if I really, really have to bare metal install of CentOS all over? That seems crazy in a Linux world.
This is a CentOS question, not an oVirt one. Last time we tried this, in-place upgrade didn't work well, so it's not documented nor tested. But if you manage to make it work, upgrading the oVirt engine inside the machine might work just as a normal upgrade (add repos, update setup packages, engine-setup, update the rest). One important issue is the PostgreSQL database. If you manage to upgrade the OS in-place, this upgrade should hopefully upgrade your database as well. But just in case, manually verify that it did. Bottom line: It's safer and simpler to reinstall, unless you have some concrete reasons (custom stuff etc.) that make it worthwhile for you to try in-place upgrade. Best regards, -- Didi
participants (3)
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Hetz Ben Hamo
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jaherring@usa.net
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Yedidyah Bar David