概述

在这里插入图片描述

仪表盘9001

1、新建cloud-consumer-hystrix-dashboard9001
2、改pom

  <dependencies>
        <!--新增hystrix dashboard-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

3、写yml

server:
  port: 9001

4、主启动类

@SpringBootApplication
@EnableHystrixDashboard
public class HystrixDashboardMain9001 {
    public static void main(String[] args) {
        SpringApplication.run(HystrixDashboardMain9001.class,args);
    }
}

5、所有Provider微服务提供类（8001/8002/8003）都需要监控依赖配置

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

6、启动：http://localhost:9001/hystrix

断路器被监控演示

1、修改cloud-provider-hystrix-payment8001
注意：新版本Hystrix需要在主启动类MainAppHystrix8001中指定监控路径,否则会报错Unable to connect to Command Metric Stream

@SpringBootApplication
@EnableEurekaClient
@EnableCircuitBreaker
public class PaymentHystrixMain8001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentHystrixMain8001.class,args);
    }

    /**
     * 个人情况：要先触发fallback后，dashboard才会显示数据，否则为loading！！！！！
     * @return
     */
    @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;
    }


}

2、监控测试
①启动1个eureka或者3个eureka集群均可
②观察监控窗口

1、9001监控8001
①填写监控地址:http://localhost:8001/hystrix.stream
②
2、测试地址(我这里有点BUG，要先执行会抛出异常的方法②，监控面板才会有反应)
①http://localhost:8001/payment/circuit/31
②http://localhost:8001/payment/circuit/-31
③先访问正确地址，再访问错误地址，再正确地址，会发现图示断路器都是慢慢放开的
监控结果，成功

监控结果，失败