On Thu, Jul 30, 2020 at 11:15 AM Alex K <rightkicktech@gmail.com> wrote:

On Tue, Jul 28, 2020 at 11:51 AM Anton Louw via Users <users@ovirt.org> wrote:

Hi All,

Does somebody perhaps know the process of changing the Hosted Engine IP address? I see that it is possible, I am just not sure if it is a straight forward process using ‘nmtui’ or editing the network config file. I have also ensured that everything was configured using the FQDN.
Since the FQDN is not changing you should not have issues just updating your DNS then changing manually the engine IP from the ifcfg-ethx files then restart networking.
What i find difficult and perhaps impossible is to change engine FQDN, as one will need to regenerate all certs from scratch (otherwise you will have issues with several services: imageio proxy, OVN, etc) and there is no such procedure documented/or supported.
I might be able to soon test this engine IP change in a virtual environment and let you know.

I followed the following steps to change engine IP and had no issues:

1. enable global maintenance

2. update your DNS or /etc/hosts settings to reflect new engine IP

3. change engine network configuration to reflect new IP. restart networking. (not need to reboot engine)

4. at engine: systemctl restart ovirt-engine, systemctl restart ovirt-imageio-proxy.service (might not be needed)

5. disable global maintenance

6. login at GUI using the same engine fqdn.

Afterwards I confirmed that imageIO proxy and OVN was ok by testing their connection through GUI, confirming that there is no certificate or other issue. Also observed for a while engine logs about any error and found none.

Hope this helps.

Thanks

Anton Louw

Cloud Engineer: Storage and Virtualization at Vox

T: 087 805 0000 | D: 087 805 1572
M: N/A
E: anton.louw@voxtelecom.co.za
A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg
www.vox.co.za

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