Graylog 与SpringBoot整合

前提条件：Graylog已安装好，并已建立了一个Inputs 这里的Inputs选择的是 GELF UDP

所以Graylog如果是Docker部署的，对应的端口映射也要改为 UDP

docker run --name graylog --link mongo --link elasticsearch \
    -p 9000:9000 -p 12201:12201/udp -p 1514:1514 \
    -e GRAYLOG_HTTP_EXTERNAL_URI="http://192.168.2.164:9000/" \
    -d graylog/graylog:4.1

我前面没有配置成UDP，浪费了一上午时间

Spring boot里Pom.xml的配置

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
    <exclusions>
        <exclusion>
            <artifactId>spring-boot-starter-logging</artifactId>
            <groupId>org.springframework.boot</groupId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>

<dependency>
    <groupId>org.graylog2.log4j2</groupId>
    <artifactId>log4j2-gelf</artifactId>
    <version>1.3.1</version>
</dependency>

Log4j2.xml的配置:IP与端口要与你建立的Inputs对应

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="OFF" packages="org.graylog2.log4j2">
    <Properties>
        <Property name="LOG_PATTERN">%d{yyyy-MM-dd HH:mm:ss:SSS} - %-5level  - %pid - %t - %c{1.}:%L - %m%n</Property>
    </Properties>
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT" follow="true">
            <ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="${LOG_PATTERN}"/>
        </Console>
        <GELF name="gelfAppender" server="192.168.2.164" port="12201" hostName="appserver01.example.com">
            <PatternLayout pattern="%logger{36} - %msg%n"/>
            <Filters>
                <Filter type="MarkerFilter" marker="FLOW" onMatch="DENY" onMismatch="NEUTRAL"/>
                <Filter type="MarkerFilter" marker="EXCEPTION" onMatch="DENY" onMismatch="ACCEPT"/>
            </Filters>
            <!-- Additional fields -->
            <KeyValuePair key="foo" value="bar"/>
            <KeyValuePair key="jvm" value="${java:vm}"/>
        </GELF>
    </Appenders>
    <Loggers>
        <Root level="info">
            <AppenderRef ref="gelfAppender"/>
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

这样子最后就可以监听得到日志数据了