Thank you for this answer and for your help.

After testing several operations without successfully change the IP range, I decided to reinstall the host and the hosted engine. I was afraid that I could not reinstall the engine correctly because I had trouble installing it 3 days ago.
But this time the installation went well.

I must be more autonomous with this virtualization solution to be able to save / restore elements by the command line from the host, because for the moment, if I break the engine, I'm like an idiot :) And as I can't export it as an ova or take a snapshot when it's up, I don't feel comfortable to test.

Regards,
Stephane

Le 24/05/2020 à 08:34, Strahil Nikolov a écrit :
Hosts' ip can be safely changed only before deployment.

In your case , it would be better if you start from scratch and reinstall the host with a new image, set the IP and then redeploy the HostedEngine (both with correct VLANs).

What kind of data domain do you use. Maybe it will be easier to change that than a redeploy.

Best Regards,
Strahil Nikolov

На 23 май 2020 г. 15:56:09 GMT+03:00, "Stéphane Paillet" <spaillet@loubrusc.org> написа: 
Hello,

I installed an ovirt node and its hosted engine in a lab. After several 
difficulties to install the engine (I don't know why, I didn't have any 
problem in the past), I would like to change IPs of both to put them on 
another vlan.

How can I do that without break anything ? My main fear is that the data 
domain used by the hosted engine use the IP of the node rather than its 
FQDN. I change other data domains paths, but don't find how to change 
this one, 'cause I can't modify it, and I can't detach / delete it to 
recreate another one. I didn't find how to move the engine on another 
data domain using the node's FQDN in its path. For now, I don't use DNS, 
I just updated /etc/hosts defs on both servers.

If someone could help me, telling me step by step how to change IPs on 
each element in good order, I would be grateful.

Thank you.
Cheers,
Stephane
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