Change Migration Network - Error

bzdigblig

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Aug 6, 2021
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When I try and migrate a VM from one node to another, I get the following error.

could not get migration ip: multiple, different, IP address configured for network '192.168.2.28/24'
TASK ERROR: command '/usr/bin/ssh -e none -o 'BatchMode=yes' -o 'HostKeyAlias=node2' root@192.168.2.18 pvecm mtunnel -migration_network 192.168.2.28/24 -get_migration_ip' failed: exit code 255


I'm trying to change the NICs that Proxmox uses for migrating VMs from node to node, since it makes much more sense to have 1G to be used for web GUI access, and 10G be used for actually migrating VMs.

I have two 1G interfaces bridged as vmbr0 with the IP of 192.68.2.17/24 and gateway of 192.168.2.1
I have two 10G interfaces bridged as vmbr1 with the IP of 192.168.2.28/24.

What do I need to change to make this work?

Thank you for your time.
 
Move the 10G interface to another subnet would most likely solve it. So from 192.168.2.X/24 to 192.168.3.X/24.
 
oof, yeah, that solves it, but creates another problem. I was originally using the 10G interface for VMs to access the network..changing the subnet drops VM connectivity. I didn't think it would be an issue to just have migration traffic use that interface as well...