SpringCloud Hystrix Dashboard断路器监控详解

Hystrix Dashboard简介

在微服务架构中为例保证程序的可用性，防止程序出错导致网络阻塞，出现了断路器模型。断路器的状况反应了一个程序的可用性和健壮性，它是一个重要指标。Hystrix Dashboard是作为断路器状态的一个组件，提供了数据监控和友好的图形化界面。

构建Dashboard断路器监控

1）新建项目，引入依赖

<dependencies> <!-- 引入公用实体类依赖,引入api --> <dependency> <groupId>com.sc</groupId> <artifactId>springcloud-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <!-- spring boot web启动器 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- Eureka依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- Ribbon依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-ribbon</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- Hystrix依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- Hystrix Dashboard依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- 监控信息 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <!-- 热部署依赖 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency> </dependencies>

必要的依赖

<!-- Hystrix依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- Hystrix Dashboard依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- 监控信息 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> 修改配置文件 server: port: 9001 management: endpoints: web: exposure: include: health,info,env,metrics

3）配置启动类

@SpringBootApplication @EnableHystrixDashboard //开启Dashboard监控 public class HystrixDashboardApplication { public static void main(String[] args) { SpringApplication.run(HystrixDashboardApplication.class,args); } }

== 至此Dashboard项目搭建完成，可以看出，只需要简单的配置即可，不需要任何的开发== 开打地址：http://loacalhost:9001/hystrix看到一头豪猪图片，说明配置成功 4）配置服务提供者环境

添加依赖 <!-- Hystrix依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId> <version>1.4.6.RELEASE</version> </dependency> <!-- 监控信息 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> 注册ServletRegistrationBean @Bean public ServletRegistrationBean hystrixMetricsStreamServlet(){ ServletRegistrationBean registrationBean = new ServletRegistrationBean(new HystrixMetricsStreamServlet()); registrationBean.addUrlMappings("/actuator/hystrix.stream"); return registrationBean; }

== 这里需要给dashboard监控的服务发送一个请求，该请求是所监控的服务的开启了熔断的端点，也就是该请求里面有调用加了@HystrixCommand注解的方法，然后就可以看到数据了 == == 完成对单一服务的断路器监控 ==

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