preferredInstanceClasses

Ordered list of preferred RDS DB instance classes. The data source will return the first match in this list that matches any other criteria. If the data source finds no preferred matches or multiple matches without engine_latest_version, it returns an error. If you use preferred_instance_classes without preferred_engine_versions or engine_latest_version, the data source returns an arbitrary engine_version based on the first one AWS returns matching the instance class and any other criteria.

Ordered list of preferred RDS DB instance classes. The data source will return the first match in this list that matches any other criteria. If the data source finds no preferred matches or multiple matches without engine_latest_version, it returns an error. If you use preferred_instance_classes without preferred_engine_versions or engine_latest_version, the data source returns an arbitrary engine_version based on the first one AWS returns matching the instance class and any other criteria.