package com.baeldung.graylog;

import org.apache.log4j.Logger;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

public class GraylogDemoApplication {

private final static Logger LOG =

Logger.getLogger(GraylogDemoApplication.class);

public static void main(String[] args) {

SpringApplication.run(GraylogDemoApplication.class, args);

LOG.info("Hello from Spring Boot");

}

}

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE log4j:configuration SYSTEM "http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd">

<log4j:configuration>

<appender name="stdout" class="org.apache.log4j.ConsoleAppender">

<layout class="org.apache.log4j.PatternLayout">

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${PID:- } [%t] --- %-40.40logger{39} : %m%n"/>

</layout>

</appender>

<appender name="graylog" class="org.graylog2.log.GelfAppender">

<param name="graylogHost" value="18.217.253.212"/>

<param name="originHost" value="localhost"/>

<param name="graylogPort" value="12201"/>

<param name="extractStacktrace" value="true"/>

<param name="addExtendedInformation" value="true"/>

<param name="facility" value="log4j"/>

<param name="Threshold" value="DEBUG"/>

<param name="additionalFields" value="{'environment': 'DEV', 'application': 'GraylogDemoApplication'}"/>

</appender>

<root>

<priority value="DEBUG"/>

<appender-ref ref="stdout"/>

<appender-ref ref="graylog"/>

</root>

</log4j:configuration>