OK thank you for clarification
Diky Martine.
Jirka
On 8/31/22 15:34, Martin Perina wrote:
Hi,
As mentioned to run oVirt Engine 4.5 you need at least on EL8.6 or CS8
machine. Then you can create DataCenter with compatibility level 4.2,
where you can create 4.2 cluster.
Martin
On Wed, 31 Aug 2022, 14:41 Jirka Simon, <ji...@vesim.cz> wrote:
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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