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6.5. logback 配置详解
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6.5. logback 配置详解

配置文件名默认是：logback-spring.xml，使用其他文件名通过下面配置项指定即可。

		
logging.config=classpath:logback.xml

6.5.1. 标准输出

基本配置

		
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yy-MMMM-dd HH:mm:ss:SSS} %5p %t %c{2}:%L - %m%n</pattern>
        </encoder>
    </appender>
    <root level="INFO">
        <appender-ref ref="stdout"/>
    </root>
</configuration>

6.5.2. 禁止 logback 日志输出

			
	<statusListener class="ch.qos.logback.core.status.NopStatusListener" />

6.5.3. 指定Class过滤日志

			
    <logger name="cn.netkiller.controller"/>
    
    <logger name="cn.netkiller.controller.HomeController" level="WARN" additivity="false">
        <appender-ref ref="console"/>
    </logger>

6.5.4. configuration 属性配置

			
scan:当此属性设置为true时，配置文件如果发生改变，将会被重新加载，默认值为true。
scanPeriod:设置监测配置文件是否有修改的时间间隔，如果没有给出时间单位，默认单位是毫秒。当scan为true时，此属性生效。默认的时间间隔为1分钟。
debug:当此属性设置为true时，将打印出logback内部日志信息，实时查看logback运行状态。默认值为false。

6.5.5. contextName 设置上下文名称

			

每个logger都关联到logger上下文，默认上下文名称为“default”。但可以使用设置成其他名字，用于区分不同应用程序的记录。设置后可以通过%contextName来打印日志上下文名称。
<contextName>logback</contextName>

6.5.6. property 设置变量

			
用来定义变量值的标签， 有两个属性，name和value；其中name的值是变量的名称，value的值时变量定义的值。通过定义的值会被插入到logger上下文中。定义变量后，可以使“${}”来使用变量。

<property name="log.path" value="/tmp" />

6.5.7. encoder 日志格式设置

			
<encoder>表示对日志进行编码：

%d{HH: mm:ss.SSS}——日志输出时间
%thread——输出日志的进程名字，这在Web应用以及异步任务处理中很有用
%-5level——日志级别，并且使用5个字符靠左对齐
%logger{36}——日志输出者的名字
%msg——日志消息
%n——平台的换行符

6.5.8. RollingFileAppender

			
上例中<fileNamePattern>${log.path}/logback.%d{yyyy-MM-dd}.log</fileNamePattern>定义了日志的切分方式——把每一天的日志归档到一个文件中，同理，可以使用%d{yyyy-MM-dd_HH-mm}来定义精确到分的日志切分方式。
<maxHistory>30</maxHistory>表示只保留最近30天的日志，以防止日志填满整个磁盘空间。
<totalSizeCap>1GB</totalSizeCap>用来指定日志文件的上限大小，例如设置为1GB的话，那么到了这个值，就会删除旧的日志。
按日期分割日志
			
<?xml version="1.0" encoding="UTF-8"?>
<configuration  scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>logback</contextName>
    <property name="log.path" value="target" />
    <!--输出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <!--输出到文件-->
    <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/spring.%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="info">
        <appender-ref ref="console" />
        <appender-ref ref="file" />
    </root>
</configuration>
按照文件尺寸分割日志

按日期分割文件

			
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <include resource="org/springframework/boot/logging/logback/defaults.xml" />
  <include resource="org/springframework/boot/logging/logback/file-appender.xml" />

<appender name="dailyRollingFileAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
  <File>logs/spring.log</File>
  <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
    <!-- daily rollover -->
    <FileNamePattern>spring.%d{yyyy-MM-dd}.log</FileNamePattern>
    <!-- keep 30 days' worth of history -->
    <maxHistory>60</maxHistory>         
  </rollingPolicy>
  <encoder>
    <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{35} - %msg %n</Pattern>
  </encoder>        
</appender>

  <root level="INFO">
    <appender-ref ref="FILE" />
	<appender-ref ref="dailyRollingFileAppender" />	
  </root>
</configuration>

通过级别分割日志将 info, error, debug 分割到指定文件中。

			
<configuration scan="true" scanPeriod="10 seconds">
     <!-- 控制台日志输出-->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    <!-- info日志输出-->
    <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
        <File>${LOG_PATH}/www.netkiller.cn.info.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/www.netkiller.cn.info-%d{yyyyMMdd}.log.%i
            </fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n
            </Pattern>
        </layout>
    </appender>
    <!-- debug 日志输出-->
    <appender name="DEBUG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>
        <File>${LOG_PATH}/www.netkiller.cn.debug.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/www.netkiller.cn.debug-%d{yyyyMMdd}.log.%i
            </fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n
            </Pattern>
        </layout>
    </appender>

      <!--error 日志输出配置 -->
    <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>%d %p (%file:%line\)- %m%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <File>${LOG_PATH}/www.netkiller.cn.error.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/www.netkiller.cn.error-%d{yyyyMMdd}.log.%i</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n</Pattern>
        </layout>
    </appender>

    <root level="DEBUG">
        <!--
        <appender-ref ref="STDOUT" />
        <appender-ref ref="INFO_FILE" />
        <appender-ref ref="ERROR_FILE" />
        <appender-ref ref="DEBUG_FILE" />
        -->
        <appender-ref ref="ERROR_FILE" />
        <appender-ref ref="INFO_FILE" />
        <appender-ref ref="DEBUG_FILE" />
    </root>

</configuration>

6.5.9. 日志过滤

将特定日志输出保存到指定位置

			
package cn.netkiller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;

public class Application {
	public static void main(String[] args) {
		final Logger logger = LoggerFactory.getLogger(Application.class);
		Marker notifyAdmin = MarkerFactory.getMarker("netkiller");
		logger.info("AAAAAAAAA");
		logger.info(notifyAdmin, "BBBBBBBBB");
		logger.error(notifyAdmin, "This is a serious an error requiring the admin's attention", new Exception("Just testing"));
	}
}

匹配到 marker 的日志才输出，通过 RollingFileAppender 可以保存到指定文件。

			
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
	<include resource="org/springframework/boot/logging/logback/defaults.xml" />
	<include resource="org/springframework/boot/logging/logback/file-appender.xml" />
	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
		<filter class="ch.qos.logback.core.filter.EvaluatorFilter">
			<evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
				<marker>netkiller</marker>
			</evaluator>
			<onMatch>ACCEPT</onMatch>
			<onMismatch>DENY</onMismatch>
		</filter>
		<encoder>
			<pattern>%date{yyyy-MM-dd HH:mm:ss} %-4relative [%thread] %-5level %logger{35} : %msg %n</pattern>
		</encoder>
	</appender>
	<root level="INFO">
		<appender-ref ref="STDOUT" />
		<appender-ref ref="FILE" />
	</root>
</configuration>

6.5.10. 标准输出

			
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
	<include resource="org/springframework/boot/logging/logback/defaults.xml" />
	<include resource="org/springframework/boot/logging/logback/file-appender.xml" />
	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
		<encoder>
			<pattern>%date{yyyy-MM-dd HH:mm:ss} %-4relative [%thread] %-5level %logger{35} : %msg %n</pattern>
		</encoder>
	</appender>
	<root level="INFO">
		<appender-ref ref="STDOUT" />
		<appender-ref ref="FILE" />
	</root>
</configuration>

6.5.11. MDC

每个 userId 生成一个日志文件

			
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
	<include resource="org/springframework/boot/logging/logback/defaults.xml" />
	<include resource="org/springframework/boot/logging/logback/file-appender.xml" />

	<property name="log.pattern" value="%d{yyyy-MM-dd HH:mm:ss} - [%25.25(%thread)] - [%-5level] - %-30.30(%logger{30}) : %msg%n" />

	<appender name="siftingAppender" class="ch.qos.logback.classic.sift.SiftingAppender">
		<discriminator>
			<key>userId</key>
			<defaultValue>unknown</defaultValue>
		</discriminator>
		<sift>
			<appender name="${userId}" class="ch.qos.logback.core.rolling.RollingFileAppender">
				<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
					<fileNamePattern>${log.path}/${userId}.%d{yyyy-MM-dd}.log</fileNamePattern>
				</rollingPolicy>
				<encoder>
					<pattern>${log.pattern}</pattern>
				</encoder>
			</appender>
		</sift>
	</appender>

	<root level="INFO">
		<appender-ref ref="siftingAppender" />
	</root>
</configuration>			
			
			
			
package cn.netkiller.log;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;

public class LogTest {

	private static final Logger logger = LoggerFactory.getLogger(LogTest.class);

	public LogTest() {
		// TODO Auto-generated constructor stub
	}

	public static void main(String[] args) {
	
		MDC.put("userId","0001");
		logger.info("0001用户");
        MDC.clear(); 

        MDC.put("userId","0002");
        logger.info("0002用户");
        MDC.clear();

	}

}

6.5.12. 日志写入 MongoDB

6.5.13. 日志发送给 logstash

https://github.com/logfellow/logstash-logback-encoder/

logstash 配置

配置 logstash 增加 tcp 接收输入端。

				
input {
    tcp {
	    mode => "server"
	    host => "127.0.0.1"
	    port => 4567
	    codec => json_lines
	}
}
Java 项目

Maven 配置文件 pom.xml 中添加

				
<dependency>
    <groupId>net.logstash.logback</groupId>
    <artifactId>logstash-logback-encoder</artifactId>
    <version>7.2</version>
</dependency>

然后再resources添加logback.xml文件

				
<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="true">
	<include resource="org/springframework/boot/logging/logback/defaults.xml" />
	<include resource="org/springframework/boot/logging/logback/console-appender.xml" />
	<include resource="org/springframework/boot/logging/logback/file-appender.xml" />

	<appender name="logstash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
		<destination>127.0.0.1:4567</destination>
		<encoder class="net.logstash.logback.encoder.LogstashEncoder">
			<providers>
				<timestamp />
				<logLevel />
				<threadName />
				<loggerName />
				<message />
			</providers>
		</encoder>
	</appender>
	<root level="info">
		<appender-ref ref="CONSOLE" />
		<appender-ref ref="logstash" />
	</root>
</configuration>
通过 tags 区分日志文件
logstash pipeline 配置

				
[root@netkiller ~]# cat /etc/logstash/conf.d/file.conf 
input {
  tcp {
    port => 4567 
    codec => json_lines
  }
}

filter {
    ruby {
	code => "event.set('datetime', event.get('@timestamp').time.localtime.strftime('%Y-%m-%d %H:%M:%S'))"
    }
}

output {
	if "finance" in [tags] { 
	    file {
	        path => "/opt/log/%{app}.finance.%{+yyyy}-%{+MM}-%{+dd}.log"
			codec => line { format => "[%{datetime}] %{level} %{message} %{tags}"}
		}
	} else if "market" in [tags] {
		file {
			path => "/opt/log/%{app}.market.%{+yyyy}-%{+MM}-%{+dd}.log"
			codec => line { format => "[%{datetime}] %{level} %{message} %{tags}"}
		}
	} else {
	    file {
			path => "/opt/log/%{app}.unknow.%{+yyyy}-%{+MM}-%{+dd}.log"
			codec => line { format => "[%{datetime}] %{level} %{message} %{tags}"}
		}
	}
}
logback-spring.xml 配置
				
<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="false" scanPeriod="60 seconds" debug="false">
	<include resource="org/springframework/boot/logging/logback/defaults.xml" />
	<include resource="org/springframework/boot/logging/logback/console-appender.xml" />
	<include resource="org/springframework/boot/logging/logback/file-appender.xml" />

	<logger name="org.springframework.web" level="INFO" />
	<logger name="org.springboot.sample" level="TRACE" />
	<property name="log.pattern" value="%date{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{35}.%method: %msg%n" />
	<springProperty scope="context" name="app" source="spring.application.name" defaultValue="spring-boot-fusion" />
	<property name="log.path" value="/tmp" />

	<appender name="siftingAppender" class="ch.qos.logback.classic.sift.SiftingAppender">
		<discriminator>
			<key>userId</key>
			<defaultValue>unknown</defaultValue>
		</discriminator>
		<sift>
			<appender name="${userId}" class="ch.qos.logback.core.rolling.RollingFileAppender">
				<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
					<fileNamePattern>${log.path}/${userId}.%d{yyyy-MM-dd}.log</fileNamePattern>
				</rollingPolicy>
				<encoder>
					<pattern>${log.pattern}</pattern>
				</encoder>
			</appender>
		</sift>
	</appender>
	<springProfile name="prod">
		<appender name="logstash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
			<destination>172.18.200.10:4567</destination>
			<keepAliveDuration>5 minutes</keepAliveDuration>
			<reconnectionDelay>3 second</reconnectionDelay>
			<writeBufferSize>8192</writeBufferSize>
			<includeCallerData>true</includeCallerData>
			<encoder class="net.logstash.logback.encoder.LogstashEncoder">
				<shortenedLoggerNameLength>36</shortenedLoggerNameLength>
				<timestampPattern>yyyy-MM-dd HH:mm:ss.Asia/Shanghai</timestampPattern>
				<timeZone>Asia/Shanghai</timeZone>

				<fieldNames>
					<timestamp>@timestamp</timestamp>
					<version>@version</version>
					<message>message</message>
					<logger>logger_name</logger>
					<!-- <thread>thread_name</thread> -->
					<level>level</level>
					<thread>[ignore]</thread>
					<levelValue>[ignore]</levelValue>
				</fieldNames>
			</encoder>

			<filter class="ch.qos.logback.core.filter.EvaluatorFilter">
				<evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
					<marker>finance</marker>
					<marker>market</marker>
					<marker>customer</marker>
				</evaluator>
				<onMatch>ACCEPT</onMatch>
				<onMismatch>DENY</onMismatch>
			</filter>
		</appender>

	</springProfile>

	<root level="info">
		<springProfile name="dev">
			<appender-ref ref="CONSOLE" />
		</springProfile>
		<springProfile name="test">
			<appender-ref ref="CONSOLE" />
			<appender-ref ref="FILE" />
		</springProfile>
		<springProfile name="prod">
			<appender-ref ref="CONSOLE" />
			<appender-ref ref="logstash" />
		</springProfile>
	</root>
</configuration>
打印日志
				
package cn.netkiller.controller;

import java.util.concurrent.TimeUnit;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import cn.netkiller.LogMarker;
import lombok.extern.slf4j.Slf4j;

@RestController
@Slf4j
public class HomeController {
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);

	public HomeController() {
		// TODO Auto-generated constructor stub
	}

	@GetMapping("/")
	public String index() {

		Marker finance = MarkerFactory.getMarker(LogMarker.finance.toString());
		Marker customer = MarkerFactory.getMarker(LogMarker.customer.toString());
		Marker market = MarkerFactory.getMarker(LogMarker.market.toString());
		logger.info("AAAAAAAAA");
		logger.info(finance, "test");
		logger.info(finance, "finance");
		logger.info(customer, "customer");
		logger.info(market, "market");

		MDC.put("userId", "0001");
		logger.info("0001用户");
		MDC.clear();

		MDC.put("userId", "0002");
		logger.info("0002用户");
		MDC.clear();
		return "Hello world!!!";
	}
}

6.5.14. fluentd

Maven 依赖
			
		<dependency>
			<groupId>org.fluentd</groupId>
			<artifactId>fluent-logger</artifactId>
			<version>0.3.4</version>
		</dependency>
		<dependency>
			<groupId>com.sndyuk</groupId>
			<artifactId>logback-more-appenders</artifactId>
			<version>1.8.7</version>
		</dependency>
安装 fluent-bit
			
dnf install -y fluent-bit

启动 fluent-bit

			
[root@netkiller ~]# fluent-bit -i forward -o stdout
Fluent Bit v1.9.7
* Copyright (C) 2015-2022 The Fluent Bit Authors
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
* https://fluentbit.io

[2022/09/24 23:25:25] [ info] [fluent bit] version=1.9.7, commit=, pid=1191240
[2022/09/24 23:25:25] [ info] [storage] version=1.2.0, type=memory-only, sync=normal, checksum=disabled, max_chunks_up=128
[2022/09/24 23:25:25] [ info] [cmetrics] version=0.3.5
[2022/09/24 23:25:25] [ info] [input:forward:forward.0] listening on 0.0.0.0:24224
[2022/09/24 23:25:25] [ info] [sp] stream processor started
[2022/09/24 23:25:25] [ info] [output:stdout:stdout.0] worker #0 started
配置 logback-spring.xml
		
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%date - %level - [%thread] - %logger - [%file:%line] - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="FLUENT" class="ch.qos.logback.more.appenders.DataFluentAppender">
        <tag>development</tag>
        <label>normal</label>
        <remoteHost>localhost</remoteHost>
        <port>24224</port>
        <maxQueueSize>20</maxQueueSize>
    </appender>

    <logger name="cn.netkiller.log" level="DEBUG"/>


    <root level="DEBUG">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FLUENT" />
    </root>

</configuration>
查看 fluent 输出
			
[0] development.normal: [1664033186.000000000, {"level"=>"INFO", "logger"=>"cn.netkiller.Application", "thread"=>"main", "message"=>"Starting Application using Java 18 on MacBook-Pro-Neo.local with PID 85696 (/Users/neo/workspace/bottleneck/target/classes started by neo in /Users/neo/workspace/bottleneck)"}]
[1] development.normal: [1664033186.000000000, {"level"=>"INFO", "logger"=>"cn.netkiller.Application", "thread"=>"main", "message"=>"The following 1 profile is active: "prod""}]
[0] development.normal: [1664033187.000000000, {"level"=>"INFO", "logger"=>"org.springframework.data.repository.config.RepositoryConfigurationDelegate", "thread"=>"main", "message"=>"Multiple Spring Data modules found, entering strict repository configuration mode"}]
[1] development.normal: [1664033187.000000000, {"level"=>"INFO", "logger"=>"org.springframework.data.repository.config.RepositoryConfigurationDelegate", "thread"=>"main", "message"=>"Bootstrapping Spring Data Redis repositories in DEFAULT mode."}]
[2] development.normal: [1664033187.000000000, {"level"=>"INFO", "logger"=>"org.springframework.data.repository.config.RepositoryConfigurationDelegate", "thread"=>"main", "message"=>"Finished Spring Data repository scanning in 6 ms. Found 0 Redis repository interfaces."}]
[0] development.normal: [1664033188.000000000, {"level"=>"INFO", "logger"=>"org.springframework.boot.web.embedded.tomcat.TomcatWebServer", "thread"=>"main", "message"=>"Tomcat initialized with port(s): 8080 (http)"}]
[1] development.normal: [1664033188.000000000, {"level"=>"INFO", "logger"=>"org.apache.catalina.core.StandardService", "thread"=>"main", "message"=>"Starting service [Tomcat]"}]
[2] development.normal: [1664033188.000000000, {"level"=>"INFO", "logger"=>"org.apache.catalina.core.StandardEngine", "thread"=>"main", "message"=>"Starting Servlet engine: [Apache Tomcat/9.0.65]"}]
[3] development.normal: [1664033188.000000000, {"level"=>"INFO", "logger"=>"org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/]", "thread"=>"main", "message"=>"Initializing Spring embedded WebApplicationContext"}]
[4] development.normal: [1664033188.000000000, {"level"=>"INFO", "logger"=>"org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext", "thread"=>"main", "message"=>"Root WebApplicationContext: initialization completed in 2133 ms"}]
[0] development.normal: [1664033189.000000000, {"level"=>"INFO", "logger"=>"org.springframework.boot.actuate.endpoint.web.EndpointLinksResolver", "thread"=>"main", "message"=>"Exposing 14 endpoint(s) beneath base path '/actuator'"}]
[0] development.normal: [1664033189.000000000, {"level"=>"INFO", "logger"=>"org.springframework.boot.web.embedded.tomcat.TomcatWebServer", "thread"=>"main", "message"=>"Tomcat started on port(s): 8080 (http) with context path ''"}]
[1] development.normal: [1664033189.000000000, {"level"=>"INFO", "logger"=>"cn.netkiller.Application", "thread"=>"main", "message"=>"Started Application in 4.224 seconds (JVM running for 4.918)"}]

6.5.15. Loki4j Logback

https://loki4j.github.io/loki-logback-appender/

Maven
			
<dependency>
    <groupId>com.github.loki4j</groupId>
    <artifactId>loki-logback-appender</artifactId>
    <version>1.3.2</version>
</dependency>
logback.xml
			
<appender name="LOKI" class="com.github.loki4j.logback.Loki4jAppender">
    <http>
        <url>http://localhost:3100/loki/api/v1/push</url>
    </http>
    <format>
        <label>
            <pattern>app=my-app,host=${HOSTNAME},level=%level</pattern>
        </label>
        <message>
            <pattern>l=%level h=${HOSTNAME} c=%logger{20} t=%thread | %msg %ex</pattern>
        </message>
        <sortByTime>true</sortByTime>
    </format>
</appender>

<root level="DEBUG">
    <appender-ref ref="LOKI" />
</root>
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6.4. 打印日志 起始页 6.6. Log4j2 + Gelf + Logstash