Adding a node to a single-node cluster

Last published : Sep 11, 2026
All nodes in the new cluster must run the same version of VCS. The example procedure refers to the existing single-node VCS node as Node A. The node that is to join Node A to form a multiple-node cluster is Node B.
Table: Tasks to add a node to a single-node cluster specifies the activities that you need to perform to add nodes to a single-node cluster.
Table: Tasks to add a node to a single-node cluster
Task Reference
Set up Node B to be compatible with Node A. See Setting up a node to join the single-node cluster .
- Add Ethernet cards for private heartbeat network for Node B. See Installing and configuring Ethernet cards for private network .
- If necessary, add Ethernet cards for private heartbeat network for Node A.
- Make the Ethernet cable connections between the two nodes.
Connect both nodes to shared storage. See Configuring the shared storage .
- Bring up VCS on Node A. See Bringing up the existing node .
- Edit the configuration file.
If necessary, install VCS on Node B and add a license key. See the Veritas InfoScale Installation Guide for installation instructions.
Make sure Node B is running the same version of VCS as the version on Node A.
Edit the configuration files on Node B. See About the VCS configuration files .
Start LLT and GAB on Node B. See Starting LLT and GAB .
- Start LLT and GAB on Node A. See Reconfiguring VCS on the existing node .
- Copy UUID from Node A to Node B.
- Restart VCS on Node A.
- Modify service groups for two nodes.
- Start VCS on Node B. See Verifying configuration on both nodes .
- Verify the two-node cluster.