如何訪問 hystrix 儀表板？

Question

我在 spring 引導應用程序中添加了以下依賴項：

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
    <version>2.1.3.RELEASE</version>
</dependency>

並標注配置 class 與：

@EnableHystrixDashboard
@EnableHystrix

我嘗試訪問http://localhost:8080/hystrix （我也嘗試過http://localhost:8081/hystrix ）

我看到了：

Whitelabel 錯誤頁面 此應用程序沒有針對 /error 的顯式映射，因此您將其視為后備。

2019 年 11 月 11 日星期一 21:47:56 MSK 出現意外錯誤（類型=未找到，狀態=404）。 沒有可用的消息

在啟動期間，我看到以下消息：

2019-11-11 21:43:17.724  INFO 15912 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-11-11 21:43:22.581  INFO 15912 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2019-11-11 21:43:23.362  INFO 15912 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8081 (http)
2019-11-11 21:43:23.507  INFO 15912 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8081 (http) with context path ''

如何訪問 hystrix 儀表板？

附言

在調試中，我看到調用了這些方法，但無論如何我看到錯誤：

當我訪問 URL 時，我還看到以下響應： http://localhost:8080/actuator/hystrix.stream

data: {"type":"HystrixCommand","name":"executeHttpCall","group":"MyAPIConnectorImpl","currentTime":1573503001364,"isCircuitBreakerOpen":false,"errorPercentage":0,"errorCount":0,"requestCount":0,"rollingCountBadRequests":0,"rollingCountCollapsedRequests":0,"rollingCountEmit":0,"rollingCountExceptionsThrown":0,"rollingCountFailure":0,"rollingCountFallbackEmit":0,"rollingCountFallbackFailure":0,"rollingCountFallbackMissing":0,"rollingCountFallbackRejection":0,"rollingCountFallbackSuccess":0,"rollingCountResponsesFromCache":0,"rollingCountSemaphoreRejected":0,"rollingCountShortCircuited":0,"rollingCountSuccess":0,"rollingCountThreadPoolRejected":0,"rollingCountTimeout":0,"currentConcurrentExecutionCount":0,"rollingMaxConcurrentExecutionCount":0,"latencyExecute_mean":948,"latencyExecute":{"0":16,"25":18,"50":23,"75":1008,"90":3767,"95":3767,"99":3767,"99.5":3767,"100":3767},"latencyTotal_mean":950,"latencyTotal":{"0":16,"25":18,"50":24,"75":1019,"90":3767,"95":3767,"99":3767,"99.5":3767,"100":3767},"propertyValue_circuitBreakerRequestVolumeThreshold":20,"propertyValue_circuitBreakerSleepWindowInMilliseconds":5000,"propertyValue_circuitBreakerErrorThresholdPercentage":50,"propertyValue_circuitBreakerForceOpen":false,"propertyValue_circuitBreakerForceClosed":false,"propertyValue_circuitBreakerEnabled":true,"propertyValue_executionIsolationStrategy":"THREAD","propertyValue_executionIsolationThreadTimeoutInMilliseconds":1000,"propertyValue_executionTimeoutInMilliseconds":1000,"propertyValue_executionIsolationThreadInterruptOnTimeout":true,"propertyValue_executionIsolationThreadPoolKeyOverride":null,"propertyValue_executionIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":10000,"propertyValue_requestCacheEnabled":true,"propertyValue_requestLogEnabled":true,"reportingHosts":1,"threadPool":"MyAPIConnectorImpl"}

data: {"type":"HystrixThreadPool","name":"MyAPIConnectorImpl","currentTime":1573503001364,"currentActiveCount":0,"currentCompletedTaskCount":18,"currentCorePoolSize":10,"currentLargestPoolSize":10,"currentMaximumPoolSize":10,"currentPoolSize":10,"currentQueueSize":0,"currentTaskCount":18,"rollingCountThreadsExecuted":0,"rollingMaxActiveThreads":0,"rollingCountCommandRejections":0,"propertyValue_queueSizeRejectionThreshold":5,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":10000,"reportingHosts":1}

ping:

在調試日志中，我看到：

2019-11-11 23:41:28.436 DEBUG 6604 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : GET "/hystrix/index", parameters={}
2019-11-11 23:41:28.447 DEBUG 6604 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.cloud.netflix.hystrix.dashboard.HystrixDashboardController#monitor(String, Model, WebRequest)
2019-11-11 23:41:28.480 DEBUG 6604 --- [nio-8080-exec-1] o.s.ui.freemarker.SpringTemplateLoader   : Looking for FreeMarker template with name [hystrix/index_ru_RU.ftlh]
2019-11-11 23:41:28.482 DEBUG 6604 --- [nio-8080-exec-1] o.s.ui.freemarker.SpringTemplateLoader   : Looking for FreeMarker template with name [hystrix/index_ru.ftlh]
2019-11-11 23:41:28.482 DEBUG 6604 --- [nio-8080-exec-1] o.s.ui.freemarker.SpringTemplateLoader   : Looking for FreeMarker template with name [hystrix/index.ftlh]
2019-11-11 23:41:28.485 DEBUG 6604 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, application/xhtml+xml, image/webp, image/apng, application/signed-exchange;v=b3, application/xml;q=0.9, */*;q=0.8]
2019-11-11 23:41:28.485 DEBUG 6604 --- [nio-8080-exec-1] o.s.w.servlet.view.InternalResourceView  : View name 'hystrix/index', model {basePath=/hystrix/index, contextPath=}
2019-11-11 23:41:28.487 DEBUG 6604 --- [nio-8080-exec-1] o.s.w.servlet.view.InternalResourceView  : Forwarding to [hystrix/index]
2019-11-11 23:41:28.491 DEBUG 6604 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : "FORWARD" dispatch for GET "/hystrix/hystrix/index", parameters={}
2019-11-11 23:41:28.494 DEBUG 6604 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/", "/"]
2019-11-11 23:41:28.497 DEBUG 6604 --- [nio-8080-exec-1] o.s.w.s.r.ResourceHttpRequestHandler     : Resource not found
2019-11-11 23:41:28.498 DEBUG 6604 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Exiting from "FORWARD" dispatch, status 404
2019-11-11 23:41:28.499 DEBUG 6604 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed 404 NOT_FOUND
2019-11-11 23:41:28.502 DEBUG 6604 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for GET "/error", parameters={}
2019-11-11 23:41:28.503 DEBUG 6604 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#errorHtml(HttpServletRequest, HttpServletResponse)
2019-11-11 23:41:28.513 DEBUG 6604 --- [nio-8080-exec-1] o.s.ui.freemarker.SpringTemplateLoader   : Looking for FreeMarker template with name [error_ru_RU.ftlh]
2019-11-11 23:41:28.514 DEBUG 6604 --- [nio-8080-exec-1] o.s.ui.freemarker.SpringTemplateLoader   : Looking for FreeMarker template with name [error_ru.ftlh]
2019-11-11 23:41:28.514 DEBUG 6604 --- [nio-8080-exec-1] o.s.ui.freemarker.SpringTemplateLoader   : Looking for FreeMarker template with name [error.ftlh]
2019-11-11 23:41:28.515 DEBUG 6604 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, text/html;q=0.8]
2019-11-11 23:41:28.519 DEBUG 6604 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 404

Answer 1

Hystrix 搜索 @HystrixCommand 注釋以顯示有關您嘗試監視的服務的數據，並且它需要執行器端點。 您將需要這三個依賴項：

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

然后嘗試輸入 url http://localhost:8080/hystrix 。 看到 hystrix 儀表板 ui 后，您應該在您的案例中輸入流的 url 即http://localhost:8080/actuator/hystrix.ZF7B44CFAFD5C52223D7BZA821 。 最后，您將能夠查看一些數據。

Answer 2

我不知道您使用的是哪個 spring-boot 版本，因為您應該考慮 spring-boot 和 spring-cloud 之間的兼容性。 如果您的 spring-boot 版本是 2.2.2.RELEASE，嘗試將 hystrix-dashboard 版本更改為 2.2.0.RELEASE。 如果沒有，請在https://spring.io/projects/spring-cloud中查找發布序列

推薦使用依賴管理工具來控制版本。如下所示：

<modelVersion>4.0.0</modelVersion>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.2.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Hoxton.RELEASE</spring-cloud.version>
</properties>
<dependencies>
    <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.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-netflix-hystrix-dashboard</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </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>

Answer 3

我遇到了同樣的問題，使用以下步驟解決了

1. 將以下注釋添加到 SpringBootApplication -- 存在 main 方法的地方

   @EnableHystrix儀表板

   @EnableHystrix

2. 在 pom.xml

   org.springframework.cloud spring-cloud-netflix-hystrix-dashboard

   org.springframework.boot spring-boot-starter-actuator

3. 在 application.properties

   management.endpoints.web.exposure.include=hystrix.stream

4. 打URL

   http://localhost:8081/hystrix

你應該可以看到 Hystrix Dashboard