Spring Cloud 2.x系列之如何使用断路器监控Hystrix Dashboard

2022-06-30 16:30:52 浏览数 (1)

在微服务架构中如何去监控服务的状态是否正常,非常重要。为例保证微服务的可用性,防止程序断路器模型。运维人员需要一个友好的程序来监控微服务的状态, Hystrix Dashboard作为断路器监控的一个重要组件,提供了数据监控及非常友好的图形化界面,方便运维人员对服务进行监控;,通过界面反馈的信息可以快速发现系统中存在的问题。另外Hystrix Dashboard是一个独立的服务结点,不需要配置任何的注册中心。

1、 新建项目sc-hystrix-dashboard,对用的pom.xml文件如下

代码语言:javascript复制
<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/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>



  <groupId>spring-cloud</groupId>

  <artifactId>sc-hystrix-dashboard</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <packaging>jar</packaging>


  <name>sc-hystrix-dashboard</name>

  <url>http://maven.apache.org</url>

  <parent>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-parent</artifactId>

      <version>2.0.4.RELEASE</version>

   </parent>

   <dependencyManagement>

      <dependencies>

        <dependency>

           <groupId>org.springframework.cloud</groupId>

           <artifactId>spring-cloud-dependencies</artifactId>

           <version>Finchley.RELEASE</version>

           <type>pom</type>

           <scope>import</scope>

        </dependency>


      </dependencies>

   </dependencyManagement>



   <properties>

      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

      <maven.compiler.source>1.8</maven.compiler.source>

      <maven.compiler.target>1.8</maven.compiler.target>

   </properties>

  <dependencies>


      <!-- <dependency>

         <groupId>org.springframework.cloud</groupId>

          <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>

         <version>1.4.5.RELEASE</version>

      </dependency>-->


      <dependency>

          <groupId>org.springframework.cloud</groupId>

          <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>

      </dependency>


      <!-- <dependency>

         <groupId>org.springframework.cloud</groupId>

          <artifactId>spring-cloud-starter-hystrix</artifactId>

         <version>1.4.5.RELEASE</version>

      </dependency>-->



      <dependency>

          <groupId>org.springframework.cloud</groupId>

         <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>

      </dependency>


   <dependency>

       <groupId>org.springframework.boot</groupId>

       <artifactId>spring-boot-starter-actuator</artifactId>

   </dependency>


  </dependencies>

</project>

说明:spring cloud2.x之后spring-cloud-starter-hystrix-dashboard和spring-cloud-starter-hystrix都标志为过期,具体推荐使用两个依赖请看下图

2、 新建spring boot启动类DashboardApplication.java

代码语言:javascript复制
package sc.hystrix.dashboard;


import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;


@SpringBootApplication

@EnableHystrixDashboard

public class DashboardApplication {



   public static void main(String[] args) {

      SpringApplication.run(DashboardApplication.class, args);

   }


}

只需添加注解EnableHystrixDashboard,启动Hystrix Dashboard即可

3、 配置Hystrix Dashboard对应的Servlet

代码语言:javascript复制
packagesc.hystrix.dashboard;



import org.springframework.boot.web.servlet.ServletRegistrationBean;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;



import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;


@Configuration

public class DashboardServletConfig {


   @Bean

   public ServletRegistrationBean getDashboardServlet(){


      HystrixMetricsStreamServletservlet = new HystrixMetricsStreamServlet();

      ServletRegistrationBeanbean = new ServletRegistrationBean(servlet);

      bean.setLoadOnStartup(1);

      bean.addUrlMappings("/hystrix.stream");

      bean.setName("hystrix");

      returnbean;

   }


}

4、 新建配置文件bootstrap.yml

代码语言:javascript复制
spring:
  application:
    name: sc-hystrix-dashboard
server:
  port: 2001

5、 启动并验证是否启动成功

方法一:查看日志配置的端口2001,在日志中标志启动成功

方法二:从上图标志的1中可以知道可以方法地址:http://127.0.0.1:2001/hystrix

6、 分析一下下图中的英文

大概的意思是:如果查看默认集群使用第一个url,查看指定集群使用第二个url,单个应用监控使用最后一个

7、 在url中输入http://127.0.0.1:2001/hystrix.stream

然后点击Monitor Stream按钮,或者访问http://localhost:2001/hystrix.stream也会不断的显示ping

源码:

代码语言:javascript复制
https://gitee.com/hjj520/spring-cloud-2.x/tree/master/sc-hystrix-dashboard

0 人点赞