无法连接到 hystrix 仪表板中的命令度量流

Question

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。

Answer 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：

1. 断路器服务正在端口 8088 上运行
2. 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