依赖

<dependency>
    <groupId>de.siegmar</groupId>
    <artifactId>logback-gelf</artifactId>
    <version>3.0.0</version>
</dependency>

配置

logging:
  level:
    root: ERROR //默认全局error级别

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter"/>
    <conversionRule conversionWord="wex"
                    converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter"/>
    <conversionRule conversionWord="wEx"
                    converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter"/>
    <property name="CONSOLE_LOG_PATTERN"
              value="${CONSOLE_LOG_PATTERN:-%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}"/>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>${CONSOLE_LOG_PATTERN}</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    <!--统一日志收集平台配置-->
    <appender name="GELF" class="de.siegmar.logbackgelf.GelfUdpAppender">
        <graylogHost>ip</graylogHost>
        <graylogPort>12203</graylogPort>
        <encoder class="de.siegmar.logbackgelf.GelfEncoder">
            <staticField>app_name:demo</staticField>
        </encoder>
    </appender>
    <!-- 控制台输出日志级别 -->
    <root level="info">
        <appender-ref ref="GELF"/>
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>