In nifi how to log ip address of the server

问题

In nifi app log how to log ip address which uses logback framework for logging.

<appender name="APP_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${org.apache.nifi.bootstrap.config.log.dir}/nifi-app.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <!--
              For daily rollover, use 'app_%d.log'.
              For hourly rollover, use 'app_%d{yyyy-MM-dd_HH}.log'.
              To GZIP rolled files, replace '.log' with '.log.gz'.
              To ZIP rolled files, replace '.log' with '.log.zip'.
            -->
            <fileNamePattern>${org.apache.nifi.bootstrap.config.log.dir}/nifi-app_%d{yyyy-MM-dd_HH}.%i.log</fileNamePattern>
            <maxFileSize>100MB</maxFileSize>
            <!-- keep 30 log files worth of history -->
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <immediateFlush>true</immediateFlush>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%date %level [%thread] %logger{40} %msg%n</pattern>
        </encoder>
    </appender>

I tried with %h for adding ip of the host server but parsing error came.

来源：https://stackoverflow.com/questions/57624814/in-nifi-how-to-log-ip-address-of-the-server