@metadata is missing in Logstash


@metadata is missing in Logstashedit

Logstash outputs remove @metadata fields automatically. Therefore, if Logstash instances are chained directly or via some message queue (for example, Redis or Kafka), the @metadata field will not be available in the final Logstash instance.

To preserve @metadata fields, use the Logstash mutate filter with the rename setting to rename the fields to non-internal fields.