Hi Martin,
then I'm a bit confused :D in ovirt doc is written.
see
https://www.ovirt.org/documentation/upgrade_guide/#Upgrading_the_Manager_to_4-5_4-4_local_db
and when I have a fresh oVirt4.5 installation there is cluster
compatibility version 4.2 not available.
Jirka
On 8/29/22 16:27, Martin Perina wrote:
Hi,
you are mixing 2 unrelated versioning parts:
1. Supported cluster levels
- oVirt Engine 4.5 supports cluster level 4.2 - 4.7
https://github.com/oVirt/ovirt-engine/blob/master/backend/manager/modules/compat/src/main/java/org/ovirt/engine/core/compat/Version.java#L22
- This means that both EL7 based (4.2 and 4.3) and EL8 based
(4.4-4.7) hosts can be successfully managed by oVirtEngine 4.5
2. OS requirements of oVirt Engine 4.5
- oVirt Engine 4.5 is supported only on EL 8.6+ and CS8 stream
- This means that:
- for standalone engine you need to have a machine with EL8.6
or CS8
- for hosted engine you need to have a cluster with EL8.6 or
CS8 hosts, where hosted engine VM based on E8.6 or CS8 can run
So specifically for your use case you need:
1. Standalone engine 4.5 running on EL8.6 or CS8, which can manage 4.2
hosts in 4.2 cluster
2. Hosted engine 4.5 running on cluster of EL8.6 or CS8 hosts with
additional (different) 4.2 cluster, where your 4.2 hosts reside
Regards,
Martin
On Mon, Aug 29, 2022 at 2:43 PM Jirka Simon <ji...@vesim.cz> wrote:
Hi Andrei,
ovirt 4.4+ has to run with centos/ rhel 8, I would not recommend mix
versions of ovirt node version within one cluster. (there couldbe
/ will
be a problem with vdsm version on each node)
And yes cluster compatibility version number doesn't match ovirt
version.
I would recommend to try to remove the oldest node from the
cluster (if
upu have some spare nodes) and try to reinstall it to centos 8 or
9 with
standalone engine for test if it works or not.
Jirka
On 8/29/22 14:26, Andrei Verovski wrote:
> Hi,
>
> My oldest nodes are version 4.2 on CentOS 7.6.
> What is the latest cluster compatibility level they support?
> Looks like oVirt Engine version and cluster compatibility level
do not match number to number, e.g. my oVirt engine 4.4.10 seems
can set cluster compatibility level up to 4.6.
>
> Someone from Red Hat, please clarify.
> Thanks in advance.
>
>
>> On 29 Aug 2022, at 15:09, Jirka Simon <ji...@vesim.cz> wrote:
>>
>> Hi Andrei,
>>
>> as I know, you need to have to have your cluster with at least
4.3 version to migrate to 4.5. I was facing the same problem with
(not so) old hardware. and i started to do step by step migration.
>>
>> it means i created new cluster with fresh configuration with
ovirt 4.5 and cluster compatibility version 4.7 next to old one
with 4.4. Iit is a good opportunity to prepare whole cluster
configuration in ansible for me :D
>>
>> Then I migrate VMs one by one from old cluster to the new one.
When is one node free on old cluster I reinstall it and add to new
cluster.
>>
>> Maybe it is not the fastest solution, but i can arrange
maintenance for each VM.
>>
>> Jirka
>>
>> On 8/29/22 10:13, Andrei Verovski wrote:
>>> Hi,
>>>
>>> I have cluster compatibility version 4.2, due to some old nodes.
>>> From what I remember in oVirt 4.5 release notes (correct
please, may be wrong here), oVirt engine 4.5 requires cluster
compatibility version >= 4.3.
>>> Please clarify. Thanks.
>>>
>>>
>>>>> On 28. 8. 2022, at 18:52, Andrei Verovski
<andre...@starlett.lv> wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> I have engine version 4.4.10.7-1.el8, is it possible to set
up new node host on CentOS Stream 9, or I need to upgrade engine
to version 4.5 first (which is not right now possible because of
some quite old nodes) ?
>>>> yes, you generally need the latest version
>>>> You can keep your old nodes old, 4.2 based nodes are still
working with 4.5
>>>>
>>>>> Thanks
>>>>> Andrei
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Martin Perina
Manager, Software Engineering
Red Hat Czech s.r.o.
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