You can use the Xenon service in conjunction with Containers for vRealize Automation to join nodes to a cluster. If the nodes are clustered, the Xenon service connects other nodes automatically when it starts.
You can monitor the cluster status on the Xenon tab in the vRealize Automation appliance or by running the following command in a CLI:
service xenon-service status_cluster
Xenon works on quorum-based clustering. The quorum is calculated by using the
(number of nodes / 2) + 1 formula.