[ovirt-users] Re: Cluster stuck in maintenance - Hosts not upgrading as expected

[Edward Berger]

I'm saw something similar on a test cluster on CentOS 8.3.
You can take it out of global maintenance mode by navigating the engine UI
to edit cluster -> scheduling policy and turn off global maintenance there.

Not sure what else is going on.  It wants me to put all three hosts into
maintenance mode which is impossible.


On Sat, May 22, 2021 at 8:36 PM David White via Users 
wrote:

> I have a 3-node hyperconverged cluster with Gluster filesystem running on
> RHEL 8.3 hosts.
>
> It's been stable on oVirt 4.5.
> Today, I just upgraded the Engine to v4.6.
>
> [image: Screenshot from 2021-05-22 20-29-23.png]
>
> I then logged into the oVirt manager, navigated to Compute -> Clusters,
> and clicked on Upgrade.
> The Status of the cluster does have an exclamation mark that says "Upgrade
> Cluster Compatibility Level", but my understanding is, I shouldn't do that
> until all 3 of my hosts have been upgraded.
>
> Looking at active tasks, I see that the first host in my cluster is stuck
> in "Upgrading".
> It's now been like this for 3 hours, without any visible progress.
>
> If I try to launch a VM that is not configured for high availability, the
> VM fails to launch, and I get a message about the cluster being in
> "Maintenance Mode" and that none of the hosts satisfies current scheduling
> restraints.
> How do I
> a) Cancel / clear the upgrade and take the cluster out of "maintenance
> mode"
> b) Properly upgrade the cluster, since clicking the "Upgrade" button
> clearly didn't work?
>
> Thanks,
> David
>
>
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[ovirt-users] Cluster stuck in maintenance - Hosts not upgrading as expected

[David White via Users]

I have a 3-node hyperconverged cluster with Gluster filesystem running on RHEL 
8.3 hosts.

It's been stable on oVirt 4.5.
Today, I just upgraded the Engine to v4.6.

[Screenshot from 2021-05-22 20-29-23.png]

I then logged into the oVirt manager, navigated to Compute -> Clusters, and 
clicked on Upgrade.
The Status of the cluster does have an exclamation mark that says "Upgrade 
Cluster Compatibility Level", but my understanding is, I shouldn't do that 
until all 3 of my hosts have been upgraded.

Looking at active tasks, I see that the first host in my cluster is stuck in 
"Upgrading".
It's now been like this for 3 hours, without any visible progress.

If I try to launch a VM that is not configured for high availability, the VM 
fails to launch, and I get a message about the cluster being in "Maintenance 
Mode" and that none of the hosts satisfies current scheduling restraints.
How do I
a) Cancel / clear the upgrade and take the cluster out of "maintenance mode"
b) Properly upgrade the cluster, since clicking the "Upgrade" button clearly 
didn't work?

Thanks,
David 

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[ovirt-users] Adding a Ubuntu Host's NFS share to oVirt

[David White via Users]

Hello,
Is it possible to use Ubuntu to share an NFS export with oVirt?I'm trying to 
setup a Backup Domain for my environment.

I got to the point of actually adding the new Storage Domain.
When I click OK, I see the storage domain appear momentarily before 
disappearing, at which point I get a message about oVirt not being able to 
obtain a lock.

It appears I'm running into the issue described in this thread: 
https://lists.ovirt.org/archives/list/users@ovirt.org/thread/BNVXUH5B26FBFCGYLG62JUSB5SOU2MN7/#IZTU744GVKY5OJT4QOULLZVKGYADXDOO
 ... Although the actual export is ext4, not xfs.

>From what I'm reading on that thread and elsewhere, it sounds like this 
>problem is a result of SELinux not being present, is that correct?

Is my only option here to install an OS that supports SELinux?

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[ovirt-users] Re: cleanup does not cleanup

[lejeczek via Users]

On 20/05/2021 10:42, Yedidyah Bar David wrote:

On Wed, May 19, 2021 at 9:34 PM lejeczek via Users  wrote:

Hi guys.

-> $ ovirt-hosted-engine-cleanup -q

says it ran its stuff, done & dusted yet I see 'ovirtmgmt'
bridge remains.
Would that be a bug and how to clean it?

It won't be fixed, because it's hard to fix _reliably_.

Most recent relevant patch:
https://gerrit.ovirt.org/c/ovirt-hosted-engine-setup/+/112336 .

Basically, you have three choices:

1. Reinstall the OS and try again to deploy.

2. Try to deploy again without removing the bridge. If the failure was
not due to misconfigured networking, and you handled the root cause
for it, a second attempt will likely succeed.

3. Manually remove it:

- Make sure you can login to the machine even with the network down.
 From a serial console, remote KVM, whatever.

- Check which nic is inside the ovirtmgmt bridge.

- Note the IP address of the bridge.

- Remove the nic from the bridge, remove the bridge, configure the NIC
to have the IP address. Or perhaps start it and let it get an address
from dhcp, as applicable.
'ovirtmgmt' survives reboots or rather - even after manual 
removal, after reboot it gets created anew.
How to get that fixed? It's not NM's bits do that - what it 
doing it?


thanks, L.

There is nothing specific to oVirt in this. You can try searching the
net for other guides about how to move a NIC out of a bridge in Linux.
If you do this very carefully, you might manage to do this from
remote, but I'd personally not try this unless I do have simple access
to the machine's console in case I make a mistake.

Good luck and best regards,

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