Hystrix监控
actuator的监控节点
在actuator下有用来监控hystrix的端点/actuator/hystrix.stream。
访问：
http://localhost:9202/actuator/hystrix.stream
输出：(注意监控时需要请求@HystrixCommand配置的微服务)
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
接口数据查看起来不直观，可以运行hystrix dashboard通过界面来查看。
先引入依赖
org.springframework.cloud spring-cloud-starter-netflix-hystrix-dashboard
创建启动类
@EnableHystrixDashboard
@SpringBootApplication(scanBasePackages = "com.github.mg0324")
public class StartupApplication {
public static void main(String[] args) {
SpringApplication.run(StartupApplication.class,args);
}
}
添加首页跳转，支持端口直接到hystrix资源路径
@Controller
public class HystrixIndexController {
@GetMapping("")
public String index() {
return "forward:/hystrix";
}
}
添加配置端口
server:
port: 8030
hystrix:
dashboard:
# 设置允许连接的IP
proxy-stream-allow-list: "192.168.3.29"
启动服务，并访问 http://127.0.0.0:8030
监控详情解读
在 Hystrix Dashboard 界面里的url处填写要监控的hystrix数据流地址。
如：http://192.168.3.29:9202/actuator/hystrix.stream
如果连接后的界面里什么都没有显示，则需要手动请求后，才能展现数据。可以用 ab 命令做请求压测，加大压力，让熔断器开启，图中会出现红色。
ab命令如下：ab -n 10000 -c 160 http://127.0.0.1:9201/test/test/feign/cardRand
集成Turbine监控
Turbine是一个聚合Hystrix监控数据的工具，它可将所有相关/hystrix.stream端点的数据聚合到一个组合的/turbine.stream中，从而让集群的监控更加方便。
添加依赖。
org.springframework.cloud spring-cloud-starter-netflix-turbine
编写启动类。
@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:
# 要监控的微服务列表，多个用,分隔
appConfig: mic-card,mic-test
clusterNameExpression: "'default'"
启动服务后，得到 http://192.168.3.29:8031/turbine.stream 的聚合节点。填写到hystrix dashboard的url中做监控。
参考
https://www.itmuch.com/spring-cloud/finchley-15/
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