Parsing JSON in Logstash

Question

I have some log files generated by Log4J2. I am outputting the logs into a .json file using the JSONLayout in the log4j2.xml configuration file. My JSONLayout is defined like th

Answer 1

You do not need to use the json filter. You can specify the codec format at your input.

input {
    file {
       type => "json"
       path => "/var/logs/myApp/logs.log"
       codec => json
    }
}

Logstash will automatically parse your log to json format and add the corresponding field.