无法连接到 hystrix 仪表板中的命令度量流
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【中文标题】无法连接到 hystrix 仪表板中的命令度量流【英文标题】:Unable to connect to Command Metric Stream in hystrix dashboard 【发布时间】:2018-12-13 03:13:41 【问题描述】:我正在尝试使用 Netflix eureka 服务发现和 hystrix 断路器构建简单的 Spring Cloud 应用程序。
断路器服务:
@EnableCircuitBreaker
@SpringBootApplication
@EnableEurekaClient
public class PluralsightEurekaFastpassConsoleApplication
public static void main(String[] args)
SpringApplication.run(PluralsightEurekaFastpassConsoleApplication.class, args);
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
</properties>
<dependencies>
<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.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>
spring-cloud-starter-netflix-hystrix
</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>$spring-cloud.version</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Hystrix 仪表板
@EnableHystrixDashboard
@SpringBootApplication
@EnableDiscoveryClient
public class PluralsiteHystrixDashboardApplication
public static void main(String[] args)
SpringApplication.run(PluralsiteHystrixDashboardApplication.class, args);
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>$spring-cloud.version</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
hystrix 仪表板
控制台日志
2018-07-04 20:15:25.051 信息 17516 --- [nio-8088-exec-1] ashboardConfiguration$ProxyStreamServlet : 代理打开连接 致:http://localhost:8088/actuator/hystrix.stream2018-07-04 20:15:25.052 信息 17516 --- [nio-8088-exec-6] ashboardConfiguration$ProxyStreamServlet : 代理打开连接 至:http://localhost:8088/actuator/hystrix.stream2018-07-04 20:15:25.058 警告 17516 --- [nio-8088-exec-1] ashboardConfiguration$ProxyStreamServlet:打开连接失败 到http://localhost:8088/actuator/hystrix.stream:404:HTTP/1.1 404 2018-07-04 20:15:25.058 警告 17516 --- [nio-8088-exec-6] ashboardConfiguration$ProxyStreamServlet:打开连接失败 到http://localhost:8088/actuator/hystrix.stream:404:HTTP/1.1 404
我试过Unable to connect to Command Metric Stream for Hystrix Dashboard with Spring Cloud
但问题依然存在。
【问题讨论】:
【参考方案1】:这个问题没有提供足够的信息,所以最好的办法可能是确保:
-
断路器服务正在端口 8088 上运行
断路器服务中的弹簧启动执行器端点确实在
actuator
上下文路径下部署和访问。为了检查actuator实际在哪里,分析启动日志,如果没有部署端点的信息,则在微服务的应用启动中添加--debug
。
看起来第二步将揭示真正的问题。
然后可以使用management.context-path
设置执行器上下文路径,或者应该自定义hystix仪表板
【讨论】:
谢谢马克,是的,执行器上下文路径中的问题。通过在 application.properties 中设置 [management.endpoints.web.exposure.include=hystrix.stream] 并通过 [localhost:8081/actuator/hystrix.stream] 访问 hystrix 流来解决以上是关于无法连接到 hystrix 仪表板中的命令度量流的主要内容,如果未能解决你的问题,请参考以下文章
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