Yes you can upgrade without a 4th host.
Actually, first update to latest 4.3.10 or your backup won't be valid for update to
You will need to set one of the hosts into maintenance and then reinstall that host with
EL8 (CentOS or another).Once you install that node, you need to readd it to the Gluster
Cluster and then deploy from backup the new engine (use new gluster volume) using that EL8
Once it's successful, the rest of the hosts should be available and you will be able
to remove one of the other nodes, reduce gluster, reinstall , get gluster running and add
the host again in oVirt.
Best Regards,Strahil Nikolov
On Tue, Mar 23, 2021 at 19:01, Jayme<jaymef(a)gmail.com> wrote: I have a fairly
stock three node HCI setup running oVirt 4.3.9. The hosts are oVirt node. I'm using
GlusterFS storage for the self hosted engine and for some VMs. I also have some other VMs
running from an external NFS storage domain.
Is it possible for me to upgrade this environment to 4.4 while keeping some of the VMs on
GlusterFS storage domains running? Does the upgrade require an additional physical host?
I'm reading through the upgrade guide and it's not very clear to me how the engine
is reinstalled on CentOS8. Do you need a 4th host, or do you take one of the three
existing hosts down, wipe it and install ovirt node 4.4?
Would it be easier for me to just move all VMs to my NFS storage domain, wipe all hosts
and deploy a brand new 4.4 HCI cluster then import the NFS storage domain? Will the 4.3
VMs on the NFS storage domain import/run properly into the new 4.4 deployment or are there
any other considerations?
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