I have a quite minimalist journalbeat config pushing my journal to elasticsearch but I'm missing the user.name field (I have user.id). I see that it is disabled by default in the reference, but in my index settings it seems to be enabled.
How should I proceed to get that field ?
Here's my journalbeat config:
journalbeat.inputs: - paths:  seek: cursor setup.template.settings: index.number_of_shards: 1 setup.kibana: output.elasticsearch: hosts: ["x:9443"] protocol: "https" username: "journalbeat" password: "x" processors: - add_host_metadata: ~ logging.level: warning