Join Two Proxmox Servers into a Cluster

Proxmox VE makes it easy to manage multiple servers by clustering them together. This guide walks you through setting up a two-node cluster manually with screenshots.

Prerequisites

• Two or more Proxmox VE servers with static IP addresses
• Root privileges on both servers

Step 1: Create the Cluster on Server 1

1. Log into Server 1.
2. Navigate to Datacenter → Cluster.
3. Click Create Cluster, enter a cluster name, then click Create.

Step 2: Copy Join Information

1. Still on Server 1, open the Join Information tab.
2. Copy the displayed details including fingerprint and token.

Step 3: Join Server 2 to the Cluster

1. On Server 2, go to Datacenter → Cluster → Join Cluster.
2. Paste the join information and click Join.

Optional: Join via CLI

If you prefer using the command line, you can run this on Server 2:

pvecm add <Server1-IP>

Cluster Ready

Once complete, both servers should appear in the cluster view and can participate in HA tasks, shared storage, and fencing actions.