Drop fields from events [drop-fields]

The drop_fields processor specifies which fields to drop if a certain condition is fulfilled. The condition is optional. If it’s missing, the specified fields are always dropped. The @timestamp and type fields cannot be dropped, even if they show up in the drop_fields list.

processors:
  - drop_fields:
      when:
        condition
      fields: ["field1", "field2", ...]
      ignore_missing: false

See Conditions for a list of supported conditions.

::::{note} If you define an empty list of fields under drop_fields, then no fields are dropped. ::::

The drop_fields processor has the following configuration settings:

fields : If non-empty, a list of matching field names will be removed. Any element in array can contain a regular expression delimited by two slashes (/reg_exp/), in order to match (name) and remove more than one field.

ignore_missing : (Optional) If true the processor will not return an error when a specified field does not exist. Defaults to false.