What roles can be assigned to devices in HA?

In a high availability (HA) setup, devices are typically assigned specific roles to ensure seamless failover and reliability. The terms "master" and "slave" accurately describe these roles where the master device is responsible for managing the configuration and service operations, while the slave device stands by to take over in case the master fails. This nomenclature is commonly used to designate the leadership hierarchy in HA configurations, and it signifies the direct oversight of the master over the slave in managing traffic and conducting health checks.

While other options such as primary and secondary, active and standby, or leader and follower may convey similar concepts in different contexts, they often pertain to different systems or architectures. For instance, the active and standby terminology is often used in clustering contexts, but it does not carry the same implications of management and deployment as master and slave roles specifically do in HA. Hence, using the correct terms is crucial for clarity in high availability architecture.