On Tue, Sep 15, 2020 at 10:10 AM Rapsilber, Marcus
<Marcus.Rapsilber(a)isotravel.com> wrote:
Hello again,
to answer your question, how did I make a clean install and reintegrate the node in the
cluster? Maybe my approach was a bit awkward/inconvenient, but this is what I did:
- Install CentOS 8
- Install oVirt Repository and packages: cockpit-ovirt-dashboard, vdsm-gluster,
ovirt-host
- Remove the Gluster bricks of the old node from the data/engine/vmstore volumes
- Process a single cluster node installation on the new node via the oVirt Dashboard, in
order to setup Gluster and the bricks (hosted-engine setup was skipped)
- On the new node: Delete the vmstore/engine/data volumes and the file metadata in the
bricks folder
- Added the bricks to the volumes of the existing cluster again
- Added the host to the cluster
Would you suggest a better approach to setup a new node for an existing cluster?
Sorry, I have no experience with gluster, so can't comment on your
particular steps, although they sound reasonable.
the main missing thing is enabling hosted-engine when adding the host
to the engine.
At this point I'm not sure if I just overlooked the "hosted engine deployment
action" when I've added the new host. Unfortunately I cannot try to edit the host
anymore since my colleague did another reinstall of the node.
Very well.
If this happens again, please tell us.
Best regards,
Thanks so far and greetings,
Marcus
-----Ursprüngliche Nachricht-----
Von: Yedidyah Bar David <didi(a)redhat.com>
Gesendet: Montag, 14. September 2020 10:56
An: Rapsilber, Marcus <Marcus.Rapsilber(a)isotravel.com>
Cc: users <users(a)ovirt.org>
Betreff: Re: [ovirt-users] Enable a cluster node to run the hosted engine
On Mon, Sep 14, 2020 at 11:18 AM <rap(a)isogmbh.de> wrote:
>
> Hi there,
>
> currently my team is evaluating oVirt and we're also testing several fail
scenarios, backup and so on.
> One scenario was:
> - hyperconverged oVirt cluster with 3 nodes
> - self-hosted engine
> - simulate the break down of one of the nodes by power off
> - to replace it make a clean install of a new node and reintegrate it
> in the cluster
How exactly did you do that?
>
> Actually everything worked out fine. The new installed node and related bricks
(vmstore, data, engine) were added to the existing Gluster storage and it was added to the
oVirt cluster (as host).
>
> But there's one remaining problem: The new host doesn't have the grey crown,
which means it's unable to run the hosted engine. How can I achieve that?
> I also found out that the ovirt-ha-agent and ovirt-ha-broker isn't
started/enabled on that node. Reason is that the
/etc/ovirt-hosted-engine/hosted-engine.conf doesn't exist. I guess this is not only a
problem concerning the hosted engine, but also for HA VM's.
When you add a host to the engine, one of the options in the dialog is to deploy it as a
hosted-engine.
If you don't, you won't get this crown, nor these services, nor its status in
'hosted-engine --vm-status'.
If you didn't, perhaps try to move to maintenance and reinstall, adding this option.
If you did choose it, that's perhaps a bug - please check/share relevant logs (e.g.
in /var/log/ovirt-engine, including host-deploy/).
Best regards,
>
> Thank you for any advice and greetings, Marcus
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