Hi, In one of my project, I need to redirect Nifi logs to console/terminal. Here is my logback.xml <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%date %level %msg%n</pattern>
</encoder>
</appender>
....
<logger name="org.apache.nifi.bootstrap" level="INFO" additivity="false">
<appender-ref ref="BOOTSTRAP_FILE" />
</logger>
<logger name="org.apache.nifi.bootstrap.Command" level="INFO" additivity="false">
<appender-ref ref="BOOTSTRAP_FILE" />
</logger>
<!-- Everything written to NiFi's Standard Out will be logged with the logger org.apache.nifi.StdOut at INFO level -->
<logger name="org.apache.nifi.StdOut" level="INFO" additivity="true">
<appender-ref ref="CONSOLE" />
<appender-ref ref="BOOTSTRAP_FILE" />
</logger>
<!-- Everything written to NiFi's Standard Error will be logged with the logger org.apache.nifi.StdErr at ERROR level -->
<logger name="org.apache.nifi.StdErr" level="ERROR" additivity="false">
<appender-ref ref="BOOTSTRAP_FILE" />
</logger>
<root level="INFO">
<appender-ref ref="CONSOLE" />
<appender-ref ref="APP_FILE"/>
</root>
However, messages in console are logged twice. (Timestamp, Level appear twice) 2018-05-04 13:30:32,265 INFO 2018-05-04 13:30:32,265 INFO Initiating checkpoint of FlowFile Repository
2018-05-04 13:30:32,265 INFO 2018-05-04 13:30:32,265 INFO Initiating checkpoint of FlowFile Repository
2018-05-04 13:30:32,403 INFO 2018-05-04 13:30:32,403 INFO org.wali.MinimalLockingWriteAheadLog@22f8be7c checkpointed with 40 Records and 91 Swap Files in 138 milliseconds (Stop-the-world time = 72 milliseconds, Clear Edit Logs time = 61 millis), max Transaction ID 7501026
consoleLogs.png I try following ways 1. Remove <appender-ref ref="CONSOLE" /> in root logger 2. Remove <appender-ref ref="CONSOLE" /> in stdout logger 3.Use customized stdout appender like this post But they either make no change or do not show logs on console at all. Any help would be appreciated. Thanks!
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