Rename json array field names

"Network IP Gateway": "",
"network details": [
"Adapter Name": "Intel(R) Network Connection",
"Manufacturer": "Intel Corporation",
"Adapter Type": "Ethernet 802.3",
"MAC Address": "00:50:56:A3:2F:36",
"Speed": "100 Mbps",
"Network Connection ID": "Ethernet0"

I am able to rename for eg: network details to network_details but unable to rename the array fields for Eg: Adapter Name to adapter_name.

Here is the filebeat config:


  • type: log
    enabled: true
    • /temp/sample.json
      #json.message_key: event
      json.keys_under_root: true
      json.add_error_key: true


  • drop_fields:
    fields: ["@metadata", "prospector","input","beat","host","source","offset","log"]
  • decode_json_fields:
    fields: ["message"]
    #process_array: true
    #max_depth: 100
  • rename:
    • from: "network details"
      to: "network_details"
    • from: "Adapter Name"
      to: "adapter_name"

any ideas.

I have noticed java script processor but not sure what code to put in which servers my purpose.

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