Using Log4j for Coherence

In order to start using Log4j for Coherence Grid Log Management,

Step 1: Pass the following system properties:

-Dlog4j.configuration=file:${DIR}/log4j.xml [Location of log4j.xml]
-Dtangosol.coherence.log.logger=Coherence
-Dtangosol.coherence.log=log4j

Step2: Add the log4j library in the classpath

Step 3: In order to create seperate files for multiple nodes running in the cluster, create a system variable that will be passed to the log4j.xml

-DlogFileName=${LOG_DIR}/.${INSTANCE}_${TIMESTAMP}

The sample Log4j.xml that can be used is as under,

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="true">
<appender name="stdout" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<!-- Pattern to output the caller's file name and line number -->
<param name="ConversionPattern" value="%5p [%t] (%F:%L) - %m%n"/>
</layout>
</appender>
<appender name="FileRollbySize" class="org.apache.log4j.RollingFileAppender">
<param name="file" value="${logFileName}"/>
<param name="MaxFileSize" value="10000KB"/>
<!-- Keep 5 backup file -->
<param name="MaxBackupIndex" value="5"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%p %t %c - %m%n"/>
</layout>
</appender>
<root>
<appender-ref ref="FileRollbySize" />
<appender-ref ref="stdout" />
</root>
</log4j:configuration>