log4j.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

    <!-- Appenders -->
    <appender name="consoleAppender" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-5p [%c{1}] %m%n"/>
        </layout>
    </appender>

    <!-- Application Loggers -->
    <logger name="org.graylog2">
        <level value="warn"/>
    </logger>
    <logger name="com.github.joschi.jadconfig">
        <level value="warn"/>
    </logger>
    <!-- Disable messages from the version check -->
    <logger name="org.graylog2.periodical.VersionCheckThread">
        <level value="off"/>
    </logger>
    <!-- this emits a harmless warning for ActiveDirectory every time which we can't work around :( -->
    <logger name="org.apache.directory.api.ldap.model.message.BindRequestImpl">
        <level value="error"/>
    </logger>
    <!-- Prevent DEBUG message about Lucene Expressions not found. -->
    <logger name="org.elasticsearch.script">
        <level value="warn"/>
    </logger>
    <!-- Suppress crazy byte array dump of Drools -->
    <logger name="org.drools.compiler.kie.builder.impl.KieRepositoryImpl">
        <level value="warn"/>
    </logger>
    <logger name="com.joestelmach.natty.Parser">
        <level value="warn"/>
    </logger>
    <!-- Silence Kafka log chatter -->
    <logger name="kafka.log.Log">
        <level value="warn"/>
    </logger>
    <logger name="kafka.log.OffsetIndex">
        <level value="warn"/>
    </logger>
    <!-- Root Logger -->
    <root>
        <priority value="warn"/>
        <appender-ref ref="consoleAppender"/>
    </root>

</log4j:configuration>