SpringCloud sleuth+zipkin implements service link tracking

1. Dependency added

<!-- sleuth-zipkin -->
        <!--<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-sleuth</artifactId>
        </dependency>-->

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>

Because zipkin already depends on sleuth, sleuth can not be added.

Two, start zipkin-server-2.12.9-exec.jar 

 Three, configure yml

spring:
  application:
    name: sleuth-consumer # 设置当前应用的名称。将来会在eureka中Application显示。将来需要使用该名称来获取路径
  zipkin:
    base-url: http://localhost:9411/  # 设置zipkin的服务端路径

  sleuth:
    sampler:
      probability: 1 # 采集率 默认 0.1 百分之十。（生产环境可以配0.5）