spring cloud 2.x版本 Hystrix Dashboard断路器教程

前言

本文采用Spring cloud本文为2.1.8RELEASE，version=Greenwich.SR3

概念

Hystrix Dashboard时Hystrix提供的一个可以查看hystrix监控数据的控制面板。Hystrix提供了近实时的数据监控，Hystrix会实时、累加的记录所有关于HystrixCommand的执行信息，包括每秒执行多少请求，多少成功和多少失败等。

创建Hystrix Dashboard工程

1.1 创建sping boot工程：hysteric-dashboard

1.2 添加pom.xml相关依赖

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>

1.3 application添加配置信息

spring:
  application:
    name: hystrix-dashboard
server:
  port: 8500

eureka:
  instance:
    hostname: localhost
    lease-renewal-interval-in-seconds: 5
    lease-expiration-duration-in-seconds: 10
  client:
    service-url:
      defaultZone: http://eureka1.server.com:8701/eureka/,http://eureka2.server.com:8702/eureka/,http://eureka3.server.com:8703/eureka/

1.4 启动类HystrixDashboardApplication增加注解

package spring.cloud.demo.hystrixdashboard;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;

@EnableHystrixDashboard
@EnableDiscoveryClient
@SpringBootApplication
public class HystrixDashboardApplication {

    public static void main(String[] args) {
        SpringApplication.run(HystrixDashboardApplication.class, args);
    }

}

1.5 启动hystrix-dashboard服务

打开浏览器，输入http://localhost:8500/hystrix显示结果如下：

1.6 监控ribbon服务

1.6.1 eureka-ribbon增加Hystrix的Configuration

package spring.cloud.demo.eurekaribbon.config;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @auther: maomao
 * @DateT: 2019-09-17
 */
@Configuration
public class HystrixConfig {

    @Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
}

启动eureka-client和eureka-ribbon服务。然后在hystrix dashboard控制面板url框中输入：

点击Monitor Stream会显示：

按照同样的方式我可以设置eureka-feign的配置来进行监看。

总结

代码地址

gitHub地址

spring cloud 2.x版本 Eureka Server服务注册中心教程
spring cloud 2.x版本 Eureka Client服务提供者教程
spring cloud 2.x版本 Ribbon服务发现教程(内含集成Hystrix熔断机制)
spring cloud 2.x版本 Feign服务发现教程(内含集成Hystrix熔断机制)
spring cloud 2.x版本 Zuul路由网关教程
spring cloud 2.x版本 config分布式配置中心教程
spring cloud 2.x版本 Hystrix Dashboard断路器教程

联系方式：[email protected]

Cloud