Cluster node ip change

[Aleksej]

Hello.

I had to migrate one node from cluster to a different place.
Networks in that places are xombined with gretap.

So, i changed node IP from 192.168.1.140 to 192.168.7.140 (as in "remote" networks)

On one of nodes that left i changed /etc/pve/corosync.conf - replaced ip of that node and increased config version.

All nodes see each other by IP and by hostname, but cluster not working.
To get working nodes that left i used pvecm expected 4 (-1)

Maybe i'm doing something wrong?

Pve 7.2 latest (updated few weeks ago)


And at now i have very big trouble because i cannot start VMs on node i moved.

Maybe someone can give any advice?
Thanks


p.s. on node i moved pvecm expected 1 helped. VMs started, but from other nodes i see that node not in network, but i see even console of that VMs (also i see VM configs, node config, etc)

 

[Aleksej]

Few issues was fixed. but now i have

corosync[1356]:   [KNET  ] rx: Packet rejected from 192.168.7.143:5405

in logs of other nodes. i searched about it. in https://forum.proxmox.com/threads/impossible-to-join-node-after-cluster-is-created.114991/
i saw that problem may be in MTU, so i decreased MTU down to 1400, but still the same.

4 nodes have MTU 1500 (direct link) and 5th actual MTU is 1458 (so i decreased to 1400)

 

[Aleksej]

Reboot all anodes helped.