Moving JSON inner field to root level


I'm using filebeats to send logs from docker instances to elasticsearch.

The log I am receiving in elasticsearch has a field called message which is a JSON object of the actual log that came out of the container.

How can I change it so that the fields inside message become root level fields (making filtering and reading on kibana easier).

This is my input config so far:


  • type: docker
    path: "/var/lib/docker/containers"
    stream: "all"
    - "*"
    json.keys_under_root: true
    json.add_error_key: true

Thank you.

Ended up using Logstash.

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