targetStateCount

Represents the number of running nodes using the desired Image ID.

• During software update operations: This count shows the number of nodes running on the desired Image ID. If a rollback occurs, the current image ID and desired image ID (both included in the describe cluster response) swap values. The TargetStateCount then shows the number of nodes running on the newly designated desired image ID (which was previously the current image ID).

• During simultaneous scaling and software update operations: This count shows the number of instances running on the desired image ID, including any new instances created as part of the scaling request. New nodes are always created using the desired image ID, so TargetStateCount reflects the total count of nodes running on the desired image ID, even during rollback scenarios.