SpringCloud 整合Sleuth+Zipkin+ELK实战

前言

• 什么是Sleuth
  
  整个分布式系统中能跟踪一个用户请求的过程(包括数据采集，数据传输，数据存储，数据分析，数据可视化)，捕获这些跟踪数据，就能构建微服务的整个调用链的视图，这是调试和监控微服务的关键工具

• 什么是Zipkin
  
  Zipkin 是一个开放源代码分布式的跟踪系统，每个服务向zipkin报告计时数据，zipkin会根据调用关系通过Zipkin UI生成依赖关系图

• 什么是ELK
  
  日志分析系统

（一） 构建 zipkin-server 服务

1.1 官网网站

点击下载

1.2 手撸创建 zipkin-server

Maven添加依赖

<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springcloud-demo-decartifactId>
        <groupId>com.examplegroupId>
        <version>1.0.0-SNAPSHOTversion>
        <relativePath>../../pom.xmlrelativePath>
    parent>
    <modelVersion>4.0.0modelVersion>

    <artifactId>zipkin-serverartifactId>

    <dependencies>
        <dependency>
            <groupId>io.zipkin.javagroupId>
            <artifactId>zipkin-serverartifactId>
            <version>2.8.4version>
        dependency>

        <dependency>
            <groupId>io.zipkin.javagroupId>
            <artifactId>zipkin-autoconfigure-uiartifactId>
            <version>2.8.4version>
        dependency>
    dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
                <configuration>
                    <mainClass>com.example.springcloud.ZipkinApplicationmainClass>
                configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackagegoal>
                        goals>
                    execution>
                executions>
            plugin>
        plugins>
    build>

project>

application.yml

spring:
  application:
    name: zipkin-server
  main:
    allow-bean-definition-overriding: true
server:
  port: 62100
management:
  metrics:
    web:
      server:
        auto-time-requests: false # 如若没有这个配置，访问WEB时，会抛出"There is already an existing meter named 'http_server_requests_seconds'"

启动类

@EnableZipkinServer
@SpringBootApplication
public class ZipkinApplication {
    public static void main(String[] args) {
        new SpringApplicationBuilder(ZipkinApplication.class)
                .web(WebApplicationType.SERVLET)
                .run(args);
    }
}

启动与访问 Zipkin

java -jar zipkin-server-${version}.jar

http://localhost:62100/zipkin/

（二） 构建 Sleuth 服务

2.1 创建项目

• sleuthTrace1
  • SleuthTrace1Application
  • application.yml
  • logback-spring.xml
• sleuthTrace2
  • 创建好 sleuthTrace1 可以复制黏贴 重命名 sleuthTrace2 把里面A改成B

Maven添加依赖

<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springcloud-demo-decartifactId>
        <groupId>com.examplegroupId>
        <version>1.0.0-SNAPSHOTversion>
        <relativePath>../../pom.xmlrelativePath>
    parent>
    <modelVersion>4.0.0modelVersion>
    <packaging>jarpackaging>
    <artifactId>sleuth-traceAartifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-sleuthartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-zipkinartifactId>
        dependency>

project>

application.yml

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:20000/eureka/

info:
  app:
    description: test
    name: sleuth-traceA

logging:
  file: ${spring.application.name}.log

management:
  endpoint:
    env:
      enabled: false
    health:
      show-details: always
  endpoints:
    web:
      exposure:
        include: '*'

server:
  port: 62000

spring:
  application:
    name: sleuth-traceA
  zipkin:
    base-url: http://localhost:62100 # Zipkin的地址

---
# Sleuth采样率
spring:
  sleuth:
    sampler:
      probability: 1 # 1 = 100% 如若采样 50% 就是 0.5

logback-spring.xml

<configuration>
    <include resource="org/springframework/boot/logging/logback/defaults.xml" />

    <springProperty scope="context" name="springAppName"
                    source="spring.application.name" />

    
    <property name="LOG_FILE" value="${BUILD_FOLDER:-build}/${springAppName}" />

    
    
    <property name="CONSOLE_LOG_PATTERN"
              value="%clr(%d{HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}" />

    
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFOlevel>
        filter>
        
        <encoder>
            <pattern>${CONSOLE_LOG_PATTERN}pattern>
            <charset>utf8charset>
        encoder>
    appender>

    
    <root level="INFO">
        <appender-ref ref="console" />
    root>

configuration>

启动类

@Slf4j
@RestController
@EnableDiscoveryClient
@SpringBootApplication
public class SleuthTrace1Application {

    @Bean
    @LoadBalanced
    public RestTemplate lb() {
        return new RestTemplate();
    }

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping(value = "/traceA")
    public String traceA() {
        log.info("-------Trace A");
        return restTemplate.getForEntity("http://sleuth-traceB/traceB", String.class).getBody();
    }

    public static void main(String[] args) {
        new SpringApplicationBuilder(SleuthTrace1Application.class)
                .web(WebApplicationType.SERVLET)
                .run(args);
    }

}

2.2 查看Zipkin界面的链路信息

• EurekaServerApplication :20000/ (自行创建 eureka-server )
• SleuthTrace1Application :62000/
• SleuthTrace2Application :62001/
• GET http://localhost:62001/traceB | 查看log
• GET http://localhost:62000/traceA | 查看log, 会出现 [里面某些字符串一致]

请求 traceA 后的链路信息

（三） Sleuth整合ELK

通过kibana查询服务与服务之间调用的traceId, 从而得到整个链路的日志检索

ELK为了演示使用单体容器方式实现

Sleuth项目的微调

sleuth-traceA 与 sleuth-traceB 添加依赖

<dependency>
    <groupId>net.logstash.logbackgroupId>
    <artifactId>logstash-logback-encoderartifactId>
    <version>5.2version>
dependency>

sleuth-traceA 与 sleuth-traceB 的 logback-spring.xml 添加 logstash 配置

<appender name="logstash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
    <destination>192.168.8.246:5044destination>
    
    <encoder
            class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
        <providers>
            <timestamp>
                <timeZone>UTCtimeZone>
            timestamp>
            <pattern>
                <pattern>
                    {
                    "severity": "%level",
                    "service": "${springAppName:-}",
                    "trace": "%X{X-B3-TraceId:-}",
                    "span": "%X{X-B3-SpanId:-}",
                    "exportable": "%X{X-Span-Export:-}",
                    "pid": "${PID:-}",
                    "thread": "%thread",
                    "class": "%logger{40}",
                    "rest": "%message"
                    }
                pattern>
            pattern>
        providers>
    encoder>
appender>


<root level="INFO">
    <appender-ref ref="console" />
    <appender-ref ref="logstash" />
root>

访问Kibana

http://localhost:5601/

Discover --> 选择 ‘*’

请求与查询

1. 清空控制台
2. 启动服务
   1. EurekaServerApplication
   2. SleuthTrace2Application
   3. SleuthTrace1Application
3. 请求 http://localhost:62000/traceA
4. 复制控制台的 traceId 到 Kibana页面上查询
   1. 精准查询关键字和值：“trace: 32deeb6a183f1e71”

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