Пример конфигурационного файла Log4j2 в YAML формате.

R5AM, Александр Ящук, Москва, 2017г.

Configutation:
  name: Default
  
  appenders:
    Console:
      PatternLayout:
        pattern: '%d{dd.MM.yyyy HH:mm:ss.SSS} %-5p %c{10}:%L - %m%n'
      name: Console-Appender
      target: SYSTEM_OUT
    File:
      PatternLayout:
        pattern: '%d{dd.MM.yyyy HH:mm:ss} %-5p %c{10}:%L - %m%n'
      fileName: logfile.log
      name: File-Appender

  loggers:
    root:
      level: debug
      appender-ref:
        - ref: Console-Appender
    logger:
      level: debug
      name: org.dbunit
      appender-ref:
        - ref: Console-Appender
    logger:
      additivity: 'false'
      level: trace
      name: com.rstyle
      appender-ref:
        - level: info
          ref: Console-Appender
        - level: trace
          ref: File-Appender