Event identifiers
Event fields uniquely identify each event. Event Management uses this information to determine whether to create a new alert or update an existing one.
- By default, each event is uniquely identified by the Message Key.
- If the Message Key is not populated, the system concatenates the Source, Type, Node, Resource, and Metric Name fields to populate the Message Key.
- If identifiers are not supplied in the event, you can add them with event rules.