Sample log4j2.xml that adds the lines needed to enable New Relic Logs in Context for Log4J v2.x.

log4j2.xml

<!-- 
     This is a full example showing the one line you need to add to log4j2.xml to enable New Relic Logs in Context.
     Most of this file is stock - the only changes needed are shown below, flagged with comments.
-->
<?xml version="1.0" encoding="UTF-8"?>
<Configuration xmlns="http://logging.apache.org/log4j/2.0/config"
               status="WARN"
               
               <!-- New Relic Logs in Context - Add NR Log4J extension -->
               packages="com.newrelic.logging.log4j2">
  <Appenders>
    <Console name="STDOUT" target="SYSTEM_OUT">
      
      <!-- New Relic Logs in Context - Enable the NR layout -->
      <NewRelicLayout/>
      
      
      <JsonLayout compact="true" eventEol="true">
        <KeyValuePair key="logging.googleapis.com/trace" value="$${ctx:traceId}"/>
        <KeyValuePair key="logging.googleapis.com/spanId" value="$${ctx:spanId}"/>
        <KeyValuePair key="logging.googleapis.com/traceSampled" value="$${ctx:traceSampled}"/>
        <KeyValuePair key="time" value="$${date:yyyy-MM-dd}T$${date:HH:mm:ss.SSS}Z"/>
     </JsonLayout>

    </Console>
  </Appenders>
  <Loggers>
    <Logger name="io.grpc.netty" level="INFO"/>
    <Logger name="io.netty" level="INFO"/>
    <Logger name="sun.net" level="INFO"/>
    <Root level="TRACE">
      <AppenderRef ref="STDOUT"/>
    </Root>
  </Loggers>
</Configuration>