Thanks Wei, yes, that is my understanding as well.


On 2023-12-11 22:44, Wei ZHOU wrote:
Right. The value might  be updated each time when cloudstack-agent is
restarted.

-Wei


在 2023年12月11日星期一,Nux <n...@li.nux.ro> 写道:

Great,

When you are done upgrading all hosts then you can revert the original
/etc/redhat-release. If it's identical on all hosts it should be fine, if
it still complains you can have a look in the DB.



On 2023-12-11 14:14, Christian Reichert wrote:

Hi Nux,

thanks for your replay, I did a first test in changing the OS and I was
able to add the host again.

Many thanks,

Christian



-----Ursprüngliche Nachricht-----
Von: Nux [mailto:n...@li.nux.ro]
Gesendet: Montag, 11. Dezember 2023 12:07
An: users@cloudstack.apache.org
Cc: Christian Reichert <christian.reich...@scsynergy.com>
Betreff: Re: OS Upgrade Rocky 8.5 to 8.9

Hi,

Cloudstack matches the Rocky OS by means of 2 things:
- the contents of /etc/redhat-release and
- the contents of cloud.host_details (where existing entries are)

The script who does this is
/usr/share/cloudstack-common/scripts/vm/hypervisor/versions.sh

I am not 100% this will work, but try to adjust /etc/redhat-release on the new server to be like the old ones, see if that yields any improvements
to your problem.
You should definitely NOT fiddle like this in production, if you have a
test environment, that'd be great.

HTH

On 2023-12-10 11:11, Christian Reichert wrote:

Hello Community,

I have a Cluster with Rocky 8.5 hosts, libvirt 6 and CloudStack Agent
4.18.0. I upgrade the first host to Rock 8.9 with libvirt 8, now the
agent is not starting on the host.

In the log I found "ERROR [kvm.resource.LibvirtConnection]
(Agent-Handler-1:null) (logid:) Connection with libvirtd is broken:
invalid connection pointer in virConnectGetVersion"

I know that I cannot mix OS versions in a cluster but I thought this
is only valid for major versions like Rock 8 / 9.

When I add the host to a new create cluster the host is successfully
added.

Any idea how to upgrade my existing cluster without interrupting the
instances to Rock 8.9?

Any help would be appreciated, thanks

BR, Christian


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