Have Logstash take a file containing an array of JSON objects

Elastic Stack Logstash
4

There is a little known side effect of setting an impossible delimiter in both the file input and the json_lines codec - it means the whole file is read as the payload to the json_lines codec. The json_line codec will create an event from each object in your JSON array. However, bear in mind the potential memory usage when the whole file is read into memory.

input {
  file {
    codec => json_lines {
      delimiter => "øøøøøø"
    }
    path => "path/to/json"
    start_position => "beginning"
    sincedb_path => "dev/null"
    delimiter => "øøøøøø"
  }
}

I have used this technique int this thread Denormalize data within a log file