ELK<logstash>過濾json資料

首先要找到正確的配置檔案

java-app.yml

input {
    tcp {
      port => 1001
  }
}

filter {
    json {
        source => "message"
    }
    grok {
        match => ["message","(\[%{DATA}\] --- )?(trace_id=%{DATA:trace_id} )?(span_id=%{DATA:span_id} )?%{GREEDYDATA:msg}"]
    }
    json {
        source => "msg"
    }
    mutate {
        remove_field => ["@version","message","msg","event","trace_id","span_id"]
    }
}

output {
    if "_grokparsefailure" in [tags] {
      stdout {
        codec => rubydebug
      }
    }
    elasticsearch {
      hosts => ["localhost:xxxx"]
      index => "java-app-log-%{+YYYY-MM-dd}"
      user => elastic
      password => Ocee4Lu2saeM5ohw
      codec => json
    }
}