High Availability (HA) Issues

High Availability (HA) allows users to run more than one Itential Automation Platform (IAP) instance in a data center. For example, you may have a data center on the East Coast with 6 active instances of IAP running virtually. Meanwhile, you have a back-up on the West Coast that contains 6 instances of IAP running in a passive state for disaster recovery. If task execution fails in a HA IAP environment, you can determine the specific IAP server that attempted to execute the task by referencing the Server ID of the failed task.

Each IAP server in an HA environment has a unique Server ID property that is defined in one of two ways:

• Manually via the serverName property of the properties.json file located in the IAP installation directory.
• Automatically by combining the MAC address and IAP port values and hashing them.

When a server attempts to execute a task, its Server ID property is added to the Task Details panel of that task.

Figure 1: Server ID

Make sure there are no connection issues affecting the server identified by the Server ID property of a failed task.