Rename a Proxmox node #

Introduction #

Similar to renaming a Proxmox node, changing the IP address of a node in a Proxmox cluster isn’t as straightforward as changing the IP address of a conventional Linux host.

Instructions #

Change node’s IP address #

1. Update the node’s IP address in the following files:

   • /etc/network/interfaces
   • /etc/hosts

2. Stop the cluster and force local mode so you can update the cluster configuration:

   systemctl stop pve-cluster
   systemctl stop corosync
   pmxcfs -l
   

3. In /etc/pve/corosync.conf update:

   • The node’s IP address
   • The IP addresses of other nodes in the cluster (if they’re changing)
   • The config_version, incrementing it by 1

4. Restart the cluster:

   killall pmxcfs
   systemctl start pve-cluster
   

Change IP address on subsequent nodes #

If you’re changing the IP address of multiple nodes in a cluster, repeat the instructions in this section for every additional node in the cluster. The process to follow depends on if the cluster’s quorum is still intact.

Intact quorum #

Update the node’s IP address in the following files:

• /etc/network/interfaces
• /etc/hosts

Non-intact quorum #

Follow the instructions in Change IP address on first node to update the cluster configuration on the subsequent node.