Hi all,

I see this has been asked in the past though I was not able to find a specific answer.

I want to change the management network at a new subnet. In this case I am using /etc/hosts and not DNS, though the steps can be performed with DNS also.

What i do is:

1. Enable global maintenance

2. SSH into engine and change its IP address to the new network and update /etc/hosts with new engine and hosts IP addresses. restart engine network.

3. Update /etc/hosts at each host to reflect new engine and host IPs.

4. Login at engine. the hosts will be by now shown as down. For each host, set host at maintenance and change its management net. Activate host, migrate engine and repeat.

5. Disable global maintenance.

I did receive some errors at step 4, failing to update host network and such, though I did run at each host:

so as to add on the fly the new host IP, in case engine wanted to have access a priory to this new IP (as already configured at /etc/hosts of engine), and unchecked the "verify engine connectivity" when saving network changes. When doing this, the host mgmt net was updated.

Now, to make it slightly more difficult, I want to add also a VLAN tag at the same management net. When I attempt to enable VLAN tagging at the ovirt management net I get:

Do you think this is fine or are there any other recommended steps?

Thanx for any feedback.

Alex