Master/Slave

Master

Master is a module state that indicates which module instance is taking decisions for the system.

Slave

Slave is another instance state that is taking orders from the master application. The slave instance can still do some actions as opposed to Active/Standby modules where the standby doesn't do any actions.

Example

Example: tboamapp is a master/slave type application. The master tboamapp is taking the decisions but the slave tboamapp is still responsible to start application on its host.