filebeat利用JavaScript剔除ipv6地址

vim filebeat.yml，在processors中新增script

# ================================= Processors =================================
processors:
  - add_host_metadata:
      when.not.contains.tags: forwarded
  - add_cloud_metadata: ~
  - add_docker_metadata: ~
  - add_kubernetes_metadata: ~
  - script:
      lang: javascript
      id: remove_ipv6
      source: >
        function process(event) {
            var message = event.Get("host.ip")
            for (var i=0; i