For high availability, distributed installations can use a load balancer in front of a cluster of vRealize Automation appliance nodes.

About this task

You use the management console on the new vRealize Automation appliance to join it to an existing cluster of one or more appliances. The join operation copies configuration information to the new appliance that you are adding, including certificate, SSO, licensing, database, and messaging information.

You must add appliances to a cluster one at a time and not in parallel.


  • You must have one or more vRealize Automation appliance nodes already in the cluster, where one node is the primary node. See Configure the Primary vRealize Automation Appliance.

    You can set a new node to be the primary node only after joining the new node to the cluster.

  • Verify that the load balancer is configured for use with the new vRealize Automation appliance.

  • Verify that traffic can pass through the load balancer to reach all current nodes and the new node that you are about to add.

  • Enable time synchronization on the new node. See Enable Time Synchronization on the vRealize Automation Appliance.

  • Verify that all vRealize Automation services have started, on the existing cluster appliance nodes and the new node that you are adding.


  1. Open a Web browser to the vRealize Automation appliance management interface URL.
  2. Continue past any certificate warnings.
  3. Log in with user name root and the password you specified when deploying the vRealize Automation appliance.
  4. Select vRA Settings > Cluster.
  5. Enter the FQDN of a previously configured vRealize Automation appliance in the Leading Cluster Node text box.

    You can use the FQDN of the primary vRealize Automation appliance, or any vRealize Automation appliance that is already joined to the cluster.

  6. Type the root password in the Password text box.
  7. Click Join Cluster.
  8. Continue past any certificate warnings.

    Services for the cluster are restarted.

  9. Verify that services are running.
    1. Click the Services tab.
    2. Click the Refresh tab to monitor the progress of service startup.