On Wed, Jan 3, 2018 at 11:56 AM, Marcin Mirecki <mmirecki@redhat.com> wrote:

Hello Gianluca,

Add/remove would probably be the simplest way to go.
The procedure would be:
- take host to maintenance
- remove host
- use vdsm-cient to change the ip of ovirtmgmt
- add the host again

Just changing the dns configuration sounds quite interesting.
I suppose the host certificates should be ok if the host was added by hostname.

I've already done something similar in September; see here the full thread:

http://lists.ovirt.org/pipermail/users/2017-September/084411.html

In that case it was more complicated in the sense that vlan change was involved for ovirtmgmt and I passed through a new cluster.

Now it is more simple, but while on September case the hosts were plain CentOS hosts, now they are ovirt-node-ng, so my manual ifcfg files manipulation doesn't fit.

If vdsm-client command is ok I presume it will be something of type:

# vdsm-client Host setupNetworks

vdsm-client: Command Host.setupNetworks with args {} failed:

(code=-32603, message=Attempt to call function: <bound method Global.setupNetworks of <API.Global object at 0x2279f10>> with arguments: () error: setupNetworks() takes exactly 4 arguments (1 given))

with some sort of json configuration, but it is not clear to me what to give

Can I do the change of ip from the host web cockpit mgmt interface? I set/change the ip and then eventually reboot the server to see if it works?

Gianluca