近几日闲来无事，工作摸鱼之时在码云上发现一个更加轻量级的分布式日志系统 PlumeLog ，就研究了一下，写了一个demo，做个记录

一、PlumeLog简介

无入侵的分布式日志系统，基于log4j、log4j2、logback搜集日志，设置链路ID，方便查询关联日志
基于elasticsearch作为查询引擎
高吞吐，查询效率高
全程不占应用程序本地磁盘空间，免维护;对于项目透明，不影响项目本身运行
无需修改老项目，引入直接使用，支持dubbo,支持springcloud

二、准备工作

服务端安装

首先是消息队列，PlumeLog适配了redis或kafka，一般项目redis足够了，我这边也是直接用redis，redis 官网： https://redis.io
然后需要安装elasticsearch，官网下载地址: https://www.elastic.co/cn/downloads/past-releases
最后下载Plumelog的程序包，plumelog-server，下载地址： https://gitee.com/frankchenlong/plumelog/releases

服务启动

启动redis，确保本地可以连接redis（服务器安全组开放端口，redis配置可访问ip）
启动elasticsearch，默认启动端口是9200，直接访问显示这个就代表启动成功了

三、修改配置

Plumelog的压缩包解压后有这些文件

修改application.properties，这边贴上我的配置，主要要改的就是redis和es的配置

spring.application.name=plumelog_server
server.port=8891
spring.thymeleaf.mode=LEGACYHTML5
spring.mvc.view.prefix=classpath:/templates/
spring.mvc.view.suffix=.html
spring.mvc.static-path-pattern=/plumelog/**
#值为4种 redis,kafka,rest,restServer
#redis 表示用redis当队列
#kafka 表示用kafka当队列
#rest 表示从rest接口取日志
#restServer 表示作为rest接口服务器启动
#ui 表示单独作为ui启动
plumelog.model=redis
#如果使用kafka,启用下面配置
#plumelog.kafka.kafkaHosts=172.16.247.143:9092,172.16.247.60:9092,172.16.247.64:9092
#plumelog.kafka.kafkaGroupName=logConsumer
#redis配置,3.0版本必须配置redis地址，因为需要监控报警
plumelog.redis.redisHost=127.0.0.1:6379
#如果使用redis有密码,启用下面配置
plumelog.redis.redisPassWord=123456
plumelog.redis.redisDb=0
#如果使用rest,启用下面配置
#plumelog.rest.restUrl=http://127.0.0.1:8891/getlog
#plumelog.rest.restUserName=plumelog
#plumelog.rest.restPassWord=123456
#elasticsearch相关配置
plumelog.es.esHosts=127.0.0.1:9200
#ES7.*已经去除了索引type字段，所以如果是es7不用配置这个，7.*以下不配置这个会报错
#plumelog.es.indexType=plumelog
#索引分片数量设定，建议值:单日日志大小/ES节点机器jvm内存大小 合理的分片大小保证ES写入效率和查询效率
plumelog.es.shards=5
plumelog.es.replicas=0
plumelog.es.refresh.interval=30s
#日志索引建立方式day表示按天、hour表示按照小时
plumelog.es.indexType.model=day
#ES设置密码,启用下面配置
#plumelog.es.userName=elastic
#plumelog.es.passWord=FLMOaqUGamMNkZ2mkJiY
#单次拉取日志条数
plumelog.maxSendSize=5000
#拉取时间间隔，kafka不生效
plumelog.interval=1000
#plumelog-ui的地址 如果不配置，报警信息里不可以点连接
plumelog.ui.url=http://127.0.0.1:8891
#管理密码，手动删除日志的时候需要输入的密码
admin.password=123456
#日志保留天数,配置0或者不配置默认永久保留
admin.log.keepDays=30
#登录配置
#login.username=admin
#login.password=admin

先不启动plumelog-server，等最后启动

提升性能推荐参考配置方法

单日日志体量在50G以内，并使用的SSD硬盘

plumelog.es.shards=5

plumelog.es.replicas=0

plumelog.es.refresh.interval=30s

plumelog.es.indexType.model=day

单日日志体量在50G以上，并使用的机械硬盘

plumelog.es.shards=5

plumelog.es.replicas=0

plumelog.es.refresh.interval=30s

plumelog.es.indexType.model=hour

单日日志体量在100G以上，并使用的机械硬盘

plumelog.es.shards=10

plumelog.es.replicas=0

plumelog.es.refresh.interval=30s

plumelog.es.indexType.model=hour

单日日志体量在1000G以上，并使用的SSD硬盘，这个配置可以跑到10T一天以上都没问题

plumelog.es.shards=10

plumelog.es.replicas=1

plumelog.es.refresh.interval=30s

plumelog.es.indexType.model=hour

plumelog.es.shards的增加和hour模式下需要调整ES集群的最大分片数

PUT /_cluster/settings
{
  "persistent": {
    "cluster": {
      "max_shards_per_node":100000
    }
  }
}

四、创建springboot项目

项目配置

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo-mybatis</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo-mybatis</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.4</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--分布式日志收集plumelog-->
        <dependency>
            <groupId>com.plumelog</groupId>
            <artifactId>plumelog-logback</artifactId>
            <version>3.3</version>
        </dependency>
        <dependency>
            <groupId>com.plumelog</groupId>
            <artifactId>plumelog-trace</artifactId>
            <version>3.3</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
            <version>2.1.11.RELEASE</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-core</artifactId>
            <version>5.5.8</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

resources下两个配置文件

application.properties

server.port=8888
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.hikari.maximum-pool-size=10
# mybatis配置
mybatis.type-aliases-package=com.example.demomybatis.model
mybatis.configuration.map-underscore-to-camel-case=true
mybatis.configuration.default-fetch-size=100
mybatis.configuration.default-statement-timeout=30
# jackson格式化日期时间
spring.jackson.date-format=YYYY-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8
spring.jackson.serialization.write-dates-as-timestamps=false
# sql日志打印
logging.level.com.example.demomybatis.dao=debug
## 输出的日志文件
logging.file.path=/log

logback-spring.xml

<?xml version="1.0" encoding="UTF-8" ?>
<configuration>
    <appender name="consoleApp" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>
                %date{yyyy-MM-dd HH:mm:ss.SSS} %-5level[%thread]%logger{56}.%method:%L -%msg%n
            </pattern>
        </layout>
    </appender>
    <appender name="fileInfoApp" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>DENY</onMatch>
            <onMismatch>ACCEPT</onMismatch>
        </filter>
        <encoder>
            <pattern>
                %date{yyyy-MM-dd HH:mm:ss.SSS} %-5level[%thread]%logger{56}.%method:%L -%msg%n
            </pattern>
        </encoder>
        <!-- 滚动策略 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 路径 -->
            <fileNamePattern>log/info.%d.log</fileNamePattern>
        </rollingPolicy>
    </appender>
    <appender name="fileErrorApp" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <encoder>
            <pattern>
                %date{yyyy-MM-dd HH:mm:ss.SSS} %-5level[%thread]%logger{56}.%method:%L -%msg%n
            </pattern>
        </encoder>
        <!-- 设置滚动策略 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 路径 -->
            <fileNamePattern>log/error.%d.log</fileNamePattern>
            <!-- 控制保留的归档文件的最大数量，超出数量就删除旧文件，假设设置每个月滚动，
            且<maxHistory> 是1，则只保存最近1个月的文件，删除之前的旧文件 -->
            <MaxHistory>1</MaxHistory>
        </rollingPolicy>
    </appender>
    <appender name="plumelog" class="com.plumelog.logback.appender.RedisAppender">
        <appName>mybatisDemo</appName>
        <redisHost>127.0.0.1</redisHost>
        <redisAuth>123456</redisAuth>
        <redisPort>6379</redisPort>
        <runModel>2</runModel>
    </appender>
    <!-- root 一定要放在最后，因有加载顺序的问题 -->
    <root level="INFO">
        <appender-ref ref="consoleApp"/>
        <appender-ref ref="fileInfoApp"/>
        <appender-ref ref="fileErrorApp"/>
        <appender-ref ref="plumelog"/>
    </root>
</configuration>

logback配置文件中注意要加上plumelog的appender，然后在root中引用appender，这个是推送日志到redis队列中的配置

traceid设置及链路追踪全局打点配置

traceid拦截器配置

package com.example.demomybatis.common.interceptor;
import com.plumelog.core.TraceId;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.UUID;
/**
 * Created by wenbo on 2021/2/25.
 */
@Component
public class Interceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        //设置TraceID值，不埋此点链路ID就没有
        TraceId.logTraceID.set(UUID.randomUUID().toString().replaceAll("-", ""));
        return true;
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
    }
}

package com.example.demomybatis.common.interceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
/**
 * Created by wenbo on 2021/2/25.
 */
@Configuration
public class InterceptorConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 自定义拦截器，添加拦截路径和排除拦截路径
        registry.addInterceptor(new Interceptor()).addPathPatterns("/**");
    }
}

链路追踪全局打点配置

package com.example.demomybatis.common.config;
import com.plumelog.trace.aspect.AbstractAspect;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
/**
 * Created by wenbo on 2021/2/25.
 */
@Aspect
@Component
public class AspectConfig extends AbstractAspect {
    @Around("within(com.example..*))")
    public Object around(JoinPoint joinPoint) throws Throwable {
        return aroundExecute(joinPoint);
    }
}