log4j appender only sending my messages to stdout, but not remote GELF appender

Question

I'm having a strange issue where log4j is correctly displaying all my log messages the console, but is only sending log messages to my graylog server that I am not writing (e.g. a library I'm using which writes to log.info will show up in graylog, but not any of the messages I write with log.info). What am I missing

Here's my logback-spring.xml

<configuration>
    <contextName>test</contextName>
    <jmxConfigurator/>

    <springProfile name="dev, test">
        <appender name="gelf" class="biz.paluch.logging.gelf.logback.GelfLogbackAppender">
            <host>udp:localhost</host>
            <port>5555</port>
            <version>1.1</version>
            <extractStackTrace>true</extractStackTrace>
            <filterStackTrace>true</filterStackTrace>
            <mdcProfiling>true</mdcProfiling>
            <timestampPattern>yyyy-MM-dd HH:mm:ss,SSS</timestampPattern>
            <maximumMessageSize>8192</maximumMessageSize>

            <includeFullMdc>true</includeFullMdc>
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                <level>INFO</level>
            </filter>
        </appender>
    </springProfile>

    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>
                %d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
            </Pattern>
        </layout>
    </appender>

    <logger name="com.test" level="info" additivity="false">
        <appender-ref ref="stdout" />
    </logger>

    <root level="INFO">
        <appender-ref ref="gelf" />
        <appender-ref ref="stdout" />
    </root>

</configuration>

I'm instantiating my log by doing:

 private static final Logger logger = LogManager.getLogger(MyClass.class);

And writing to my log:

 logger.info("WHY CAN'T I SEE THIS IN MY GRAYLOG SERVER");

Soufiane Sakhi · Accepted Answer · 2018-12-07T21:29:01.680

1

Edit: Your are specifying that the loggers of the package com.test should only write to the stdout appender.

<logger name="com.test" level="info" additivity="false">
   <appender-ref ref="stdout" />
</logger>

You should change it to:

<logger name="com.test" level="info" />

Make sure that you are running your app with the matching profile for your gelf appender.

edited Dec 07 '18 at 21:29

answered Dec 07 '18 at 20:50

Soufiane Sakhi

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10
13

If I wasn't using the correct profile, then nothing would appear in my graylog server though. As it stands, the only messages appearing in my graylog server aren't sent from my application code, but from libraries/dependencies – J_Stan Dec 07 '18 at 20:52

log4j appender only sending my messages to stdout, but not remote GELF appender

1 Answers1