NOTE: You are looking at documentation for an older release. For the latest information, see the current release documentation.
You can define processors in your configuration to process events before they are sent to the configured output. The libbeat library provides processors for:
- reducing the number of exported fields
- enhancing events with additional metadata
- performing additional processing and decoding
Each processor receives an event, applies a defined action to the event, and returns the event. If you define a list of processors, they are executed in the order they are defined in the Metricbeat configuration file.
event -> processor 1 -> event1 -> processor 2 -> event2 ...
For example, the following configuration reduces the exported fields by
beat.hostname fields under
beat from all documents.
processors: - drop_fields: fields: ['beat']