Hystrix監(jiān)控

actuator的監(jiān)控節(jié)點

在actuator下有用來監(jiān)控hystrix的端點/actuator/hystrix.stream。

訪問：

http://localhost:9202/actuator/hystrix.stream

輸出：(注意監(jiān)控時需要請求@HystrixCommand配置的微服務(wù))

ping: 

data: {"type":"HystrixCommand","name":"feignCardRand","group":"TestController","currentTime":1641272819332,"isCircuitBreakerOpen":false,"errorPercentage":0,"errorCount":0,"requestCount":1000,"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":1000,"rollingCountThreadPoolRejected":0,"rollingCountTimeout":0,"currentConcurrentExecutionCount":0,"rollingMaxConcurrentExecutionCount":10,"latencyExecute_mean":0,"latencyExecute":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"latencyTotal_mean":0,"latencyTotal":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"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":"TestController"}

集成hystrix dashboard

接口數(shù)據(jù)查看起來不直觀，可以運行hystrix dashboard通過界面來查看。

先引入依賴

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

創(chuàng)建啟動類

@EnableHystrixDashboard
@SpringBootApplication(scanBasePackages = "com.github.mg0324")
public class StartupApplication {
    public static void main(String[] args) {
        SpringApplication.run(StartupApplication.class,args);
    }
}

添加首頁跳轉(zhuǎn)，支持端口直接到hystrix資源路徑

@Controller
public class HystrixIndexController {
  @GetMapping("")
  public String index() {
    return "forward:/hystrix";
  }
}

添加配置端口

server:
  port: 8030

hystrix:
  dashboard:
    # 設(shè)置允許連接的IP
    proxy-stream-allow-list: "192.168.3.29"

啟動服務(wù)，并訪問 http://127.0.0.0:8030

監(jiān)控詳情解讀

在 Hystrix Dashboard 界面里的url處填寫要監(jiān)控的hystrix數(shù)據(jù)流地址。
如：http://192.168.3.29:9202/actuator/hystrix.stream

如果連接后的界面里什么都沒有顯示，則需要手動請求后，才能展現(xiàn)數(shù)據(jù)?？梢杂?ab 命令做請求壓測，加大壓力，讓熔斷器開啟，圖中會出現(xiàn)紅色。

ab命令如下：
ab -n 10000 -c 160 http://127.0.0.1:9201/test/test/feign/cardRand

集成Turbine監(jiān)控

Turbine是一個聚合Hystrix監(jiān)控數(shù)據(jù)的工具，它可將所有相關(guān)/hystrix.stream端點的數(shù)據(jù)聚合到一個組合的/turbine.stream中，從而讓集群的監(jiān)控更加方便。

添加依賴。

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-turbine</artifactId>
</dependency>

編寫啟動類。

@EnableTurbine
@SpringBootApplication(scanBasePackages = "com.github.mg0324")
public class StartupApplication {
    public static void main(String[] args) {
        SpringApplication.run(StartupApplication.class,args);
    }
}

添加配置。

server:
  port: 8031
spring:
  application:
    name: card-hystrix-turbine
eureka:
  client:
    service-url:
      defaultZone: http://192.168.3.29:8761/eureka/
  instance:
    prefer-ip-address: true
turbine:
  # 要監(jiān)控的微服務(wù)列表，多個用,分隔
  appConfig: mic-card,mic-test
  clusterNameExpression: "'default'"

啟動服務(wù)后，得到 http://192.168.3.29:8031/turbine.stream 的聚合節(jié)點。填寫到hystrix dashboard的url中做監(jiān)控。

參考

https://www.itmuch.com/spring-cloud/finchley-15/

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