zipkin作为简易的应用trace工具，适合小微型应用使用，2X和1X发生了重大变化，下面讲解下如何高效利用2X：

首先启动zipkin-server，可以通过jar包启动，2X已经不在推跟随SpringApplication启动的方式了，所以用法要特别注意下。

首先必须单独建立应用，不能和其他应用绑定一起。

pom中需要引入

<dependency>
   <groupId>io.zipkin.java</groupId>
   <artifactId>zipkin-server</artifactId>
   <version>2.12.9</version>
</dependency>
<dependency>
   <groupId>io.zipkin.java</groupId>
   <artifactId>zipkin-autoconfigure-ui</artifactId>
   <scope>runtime</scope>
   <version>2.12.9</version>
</dependency>

尽量不要引入其他了，以免发生包冲突。

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import zipkin2.server.internal.EnableZipkinServer;
import zipkin2.server.internal.RegisterZipkinHealthIndicators;

@SpringBootApplication
@EnableZipkinServer
public class ZkServerApp {

   public static void main(String[] args) {
      new SpringApplicationBuilder(ZkServerApp.class)
            .listeners(new RegisterZipkinHealthIndicators())
            .properties("spring.config.name=zipkin-server")
            //.properties("spring.config.location=classpath:/springcloud/zipkin-server.yml").run(args);
            .run(args);
   }
}

主代码如上，配置如下，配置名必须为zipkin-server

spring:
  application:
    name: zipkin-server
  profiles.include: shared  # 必须，否则会报错
#server:
#  port: 9411 此处已经无用
QUERY_PORT: 9411 # 这里可以更改很多配置，配置名参见zipkin-server-shared.yml,该文件在zipkin2源码中
#zipkin:
#  storage:
#    type: mysql
#spring:
#  datasource:
#    schema: classpath:/mysql.sql
#    url: jdbc:mysql://localhost:3306/ZIPKIN?autoReconnect=true&characterEncoding=utf-8
#    username: root
#    password: 123456
#    initialize: true
#    continueOnError: true

eureka:
  instance:
    hostname: localhost
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

然后需要trace的应用程序就简单了只要在配置里面多加

spring:
  zipkin:
    base-url: http://localhost:9411
  sleuth:
    sampler:
      probability: 1.0

这两个就行。pom中加入

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zipkin</artifactId>
    <version>2.1.1.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-sleuth-zipkin</artifactId>
    <version>2.1.1.RELEASE</version>
</dependency>

 

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