Extract field from kibana

Elastic Stack Kibana
1

Hi, I need to exctract all the field: "cf" from kibana to a txt file or visualize...
the field: "cf" are inside the "message", Does somebody know How may I accomplish the duty?

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They are also kept in an other field called "Recipent"
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I just need a list with all recipient to visualize

2

Hi, can you explain a bit better what do you mean by "extract"? Kibana supports exporting data as csv.

3

Ideally this is something that you would do during the ingestion phase.
You might be able to do it with a runtime field however.