spring cloud 在初次使用 hystrix dashboard仪表盘的时候很容易出现hystrix dashboard Unable to connect to Command Metric Stream错误
如下图：
image
首先查看依赖时候添加全
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
<version>1.4.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
<version>1.4.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
其次启动程序注解是否添加
@EnableCircuitBreaker
@EnableHystrixDashboard
如果都没问题那么检查下springboot 版本如果是2.0则需要添加 ServletRegistrationBean 因为springboot的默认路径不是 "/hystrix.stream"，只要在自己的项目里配置上下面的servlet就可以了
@EnableDiscoveryClient
@EnableFeignClients
@SpringBootApplication
@EnableHystrixDashboard
@EnableCircuitBreaker
public class Consumer1Application {
public static void main(String[] args) {
SpringApplication.run(Consumer1Application.class, args);
}
@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;
}
}
修改完成重启服务问题便会解决
image
分析：
