On 2023-05-12 15:34 Volenbovskyi, Konstantin wrote:
what are 'source' and 'target' ovirt engine versions?

I was attempting to perform a direct upgrade from 4.3.x to 4.5.4 (nightly).
It was said to work properly and I've done this before already,
so I wasn't expecting trouble. :)

Indeed, update key&certificate on old engine seems as good way forward
It seems that
https://myhomelab.gr/linux/2020/01/20/replacing_ovirt_ssl.html
and/or
https://rhv.bradmin.org/ovirt-engine/docs/Upgrade_Guide/Replacing_SHA-1_Certificates_with_SHA-256_Certificates_4-0_remote_db.html
will solve it for you.

Neat, I've bookmarked these guides. Very useful, thanks!

However, I found another way to make it work using the following steps:

- downgraded ovirt-engine-appliance-4.5 from version 20230501063412.1.el9 (nightly) to 20221206125848.1.el9 (release) - answered "YES" to the setup question "Renew engine PKI on restore if needed"

Due to time constraints I could not verify which of these
steps did the trick, but the upgrade was successfully.

Side note: I also had to downgrade ansible-core to 2.14.1, because
version 2.14.2 lead to troubles in early stages of the `hosted-engine --deploy` setup process (a Python error: cannot import name 'Callable' from 'collections').


Regards
- Frank
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