IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Decode Base64 fields

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Decode Base64 fields

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The decode_base64_field processor specifies a field to base64 decode.

To overwrite fields, either rename the target field or use the drop_fields processor to drop the field, and then rename the field.

Example

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In this example, field1 is decoded in field2.

  - decode_base64_field:
      field:
        from: "field1"
        to: "field2"
      ignore_missing: false
      fail_on_error: true

Configuration settings

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Elastic Agent processors execute before ingest pipelines, which means that your processor configurations cannot refer to fields that are created by ingest pipelines or Logstash. For more limitations, refer to What are some limitations of using processors?

Name	Required	Default	Description
`field`	Yes		Contains: `from: "old-key"`, where `from` is the origin `to: "new-key"`, where `to` is the target field name
`ignore_missing`	No	`false`	Whether to ignore missing keys. If `true`, missing keys that should be base64 decoded are ignored and no error is logged. If `false`, an error is logged and the behavior of `fail_on_error` is applied.
`fail_on_error`	No	`true`	Whether to fail if an error occurs. If `true` and an error occurs, an error is logged and the event is dropped. If `false`, an error is logged, but the event is not modified.

See Conditions for a list of supported conditions.

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