The primary master node is the master node in the BeyondTrust cluster that is configured as the primary site in failover. Information on configuring the Secure Remote Access Appliance for failover is available in the Failover Configuration document. The network in which the master lives should be a central location in relation to your network as a whole.
It is a best practice to set up two master nodes in a failover relationship. However, it is possible, though not recommended, to have only one master node.
Perform the following steps on the primary master node:
While IP addresses are recommended for failover setups, BeyondTrust does not currently support IP address usage for Atlas clusters. All master nodes (primary and failover) as well as traffic nodes should use their unique node hostnames. They should NOT use the primary public hostname of the entire cluster or their unique public and/or private IP addresses.
If the primary master appliance is in a failover synchronization with a backup master, then the backup master is added to the cluster automatically. If the primary master node is put in failover with a new backup appliance, the new backup appliance is added to the cluster automatically, and the cluster settings are synced to the new backup during the process of establishing failover.