Hi Sandro I’m writing back to thank you for the support and give a feedback.

I was unable to properly restore the engine from 4.3 to 4.5 (or even 4.4); there was some errors during the network phase and I think that was because ovirtmgmt was running on top a bond0 and in the 4.2 days, when the engine was originally deployed that was broken and unsupported.

After 4 or 5 tries I ended up reconfiguring the entire engine in a brand new one. It was faster… there was a lot of errors on OVESETUP_OVN/ovirtProviderOvnSecret and I gave up.

Thank you.

On 30 Jun 2022, at 03:32, Sandro Bonazzola <sbonazzo@redhat.com> wrote:

Il giorno gio 30 giu 2022 alle ore 05:56 Vinícius Ferrão <ferrao@versatushpc.com.br> ha scritto:

On 29 Jun 2022, at 02:43, Sandro Bonazzola <sbonazzo@redhat.com> wrote:

Il giorno mar 28 giu 2022 alle ore 17:52 Vinícius Ferrão via Users <users@ovirt.org> ha scritto:

Hello, I would like to know if I can do an oVirt upgrade directly from 4.2 to 4.5.

I don’t have a free host to upgrade the oVirt Node, so I was hoping that would be possible to fire up a new engine (with restore-backup) on the old oVirt Nodes and later on upgrade the hosts.

Is this possible?

Please upgrade the engine to 4.3 and take a backup.

Direct upgrade from 4.3 to 4.5 should work fine but direct upgrade from 4.2 backup is not working.

As for the host, oVirt Node 4.5 is supposed to be compatible with ovirt engine >= 4.2.

Thank you Sandro. I’m following the instructions over here:

https://www.ovirt.org/documentation/upgrade_guide/#Upgrading_the_Manager_to_4-3_4-2_local_db

https://www.ovirt.org/documentation/upgrade_guide/#Upgrading_Remote_Databases_from_PG95_to_PG10_4-2_remote_db

I had to upgrade Postgres to version 10, on the SelfHosted Engine to proceed. Just followed the “remote database procedure” even without a remote DB.

I just have one more question: to do the jump from 4.3 to 4.5 on the engine the only way is restoring a backup right? Since 4.5 is based on EL8. I cannot do the yum update ovirt\*setup\* method right?

Right

 

Is there other way?

No

 

Also during the host upgrades, I understand that I can run oVirt Node 4.5 with Engine 4.2 (and now 4.3), which is awesome. But is there a path where I can upgrade the engine to the latest version and them move the hosts?

You can move your hosted engine to bare metal and then upgrade the hosts. If you have hosted engine, the installation from backup requires 1 host on 4.5 with the corresponding ovirt engine appliance.

 

I have those questions because I can’t see where or when the OS upgrade will be done on the SHE during 4.3 -> 4.5.

When installing the first 4.5/el8 host you can restore backup into a newly deployed hosted engine 4.5/el8 so both engine and first host get upgraded at the same step.

 

Thank you.

-- 

Sandro Bonazzola

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA

sbonazzo@redhat.com   

Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours.

-- 

Sandro Bonazzola

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA

sbonazzo@redhat.com   

Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours.