如何停止 Kafka 记录到 nohup.out 文件

Question

In the shell script runMyProgram.sh, the app is starting with this command:

nohup ${JAVA_HOME}/bin/java org.springframework.boot.loader.JarLauncher >> nohup.out 2>&1 &

As soon as it starts, the nohup.out file is getting filled with Kafka certificate information, algorithm names, for example: org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1, WRITE: TLSv1.2 Handshake, length = 254, followed by encoded/decoded text.

I've tried changing the ">> nohup.out 2>&1" to other forms and combinations, didn't help.

I've also tried setting all those package/classes level logging to OFF/FATAL/ERROR/in log4j2.xml file, that too didn't solve the problem.

Like so:

<logger name="org.springframework" additivity="false">
  <level value="OFF" />
  <appender-ref ref="ASYNC_ROOT"/></logger>

I've also excluded log4j from pom dependencies, didn't resolve either, like so:

<dependency>
   <groupId>org.springframework.kafka</groupId>
   <artifactId>spring-kafka</artifactId>
   <exclusions>
<exclusion>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
</exclusion></exclusions></dependency>

Answer 1

Try redirecting to dev/null

 nohup command_to_run  >/dev/null 2>&1

More info here: https://en.wikipedia.org/wiki/Null_device