Changed node IP, not rejoining cluster

tprice

New Member
Mar 27, 2025
22
7
3
Hi All,

I have a cluster of 6 nodes, originally all nodes were using 192.168.0.x/20 IPs. Today, I'm trying to change a single node to a new 10.16.0.x/24 IP.

On the node being updated I,
1. Updated /etc/network/interfaces
2. Updated /etc/hosts

Then I updated corosync.conf with the new IP and incremented the version. I then rebooted the node being updated. Upon coming back up, the updated node is not joining the now cluster of 5.

I have confirmed,
1. Corosync file with updated IP propagated to the other 5 nodes
2. All nodes can reach the new IP by pinging
3. I can SSH from the updated node to existing nodes.

Below is the status for pvecm, pve-cluster and corosync services from the node unable to rejoin the cluster
1749496172766.png
1749496124228.png
1749496149324.png
Below is the status for pvecm, pve-cluster and corosync services from a working node
1749496051404.png
1749496031455.png1749495943618.png

If anyone could provide pointers as to how I can get this node back into the cluster it would be much appreciated.
 
Ended up going the direction of removing the node and completely reinstalling Proxmox before then adding the node back.
 
  • Like
Reactions: leesteken