Zuul转发错误

Question

我正面临使用Zuul和Ribbon的问题。我也在微服务注册中心使用尤里卡。

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当我启动我的微服务生态系统并尝试使用ribbon-service API(zuulservice:8761/ribbon-service/)时，我得到以下错误：

com.netflix.zuul.exception.zuulException:org.springframework.cloud.netflix.zuul.filters.route.ribbonroutingfilter.handleException(RibbonRoutingFilter.java:189)~[spring-cloud-netflix-zuul-2.0.0.release.jar:2.0.0.release]在org.springframework.cloud.netflix.zuul.filters.route.ribbonroutingFilter.forward x.zuul.filters.route.ribbonroutingfilter.run(Ribbonroutingfilter.java:112)~[spring-cloud-netflix-zuul-2.0.0.release.jar:2.0.0.release]在com.netflix.zuul.zuulfilter.runfilter(zuulfilter.java:117)~[zuulfilter.java:117)~[zuul-core-1.3.1.jar:1.3.1]在zuul-core-1.3.1.jar:1.3.1]在com.netflix.zuul.filterprocessor.route(filterprocessor.java:118)~[zuul-core-1.3.1.jar:1.3.1]在com.netflix.zuul.zuulrunner.route(zuulrunner.java:96)~[zuul-core-1.3.1.jar:1.3.1]在com.netflix.zuul.http.zuulservlet.route(zuulservlet.java:116)~[zuul-core-1.3.1.jar:1.3.1]在com.netflix.zuul.http.zuulservlet.service(zuulservlet.java:81)~[zuul-core-1.3.1.jar:1.3.1]在ase.jar:5.0.5.release]在org.springframework.cloud.netflix.zuul.web.zuulcontroller.handlerequest(zuulcontroller.java:44)[spring-cloud-netflix-zuul-2.0.0.release.jar:2.0.0.release]在VC-5.0.5.release.jar:5.0.5.release]在org.springframework.web.servlet.dispatcherservlet.doService（dispatcherservlet.java:925)[spring-webmVC-5.0.5.release.jar:5.0.5.release]................................................................................................................................................................................................................................................................................................................................................................balancer.reactive.loadbalancerCommand$1.call(loadbalancerCommand.java:180)~[Ribbon-loadbalancer-2.2.5.jar:2.2.5]在rx.observable.unsafeSubscribe(observable.java:10327)~[rxjava-1.3.8.jar:1.3.8]在rx.internal.operators.onsubscribeconcatmap.call(onsubscribeconcatmap.java:94)~[rxjava-1.3.8.jar:1.3.8]在]在rx.observable.unsafeSubScribe(Observable.java:10327)~[rxjava-1.3.8.jar:1.3.8]

这个错误会持续一段时间，之后我得到以下输出：

2018-07-16 12:55:43.260信息19233---[erListUpdater-0]C.netflix.config.ChainedDynamicProperty：翻转属性：ribbon-service.ribbon.activeConnectionsLimit使用下一个属性:niws.loadbalancer.availabilityFilterIngrule.ActiveConnectionsLimit=2147483647

在那之后，输出everthing再次工作得很好。

这是我的zuul服务应用程序。属性：

> #Service port
server.port=8765

#Service port
spring.application.name=zuul-service

# Discovery Server Access
 eureka.client.service-url.defaultZone:http://localhost:8761/eureka/
 eureka.instance.lease-renewal-interval-in-seconds=3

 #User service configuration
 zuul.routes.user-service.path:/user-service/**
 zuul.routes.user-service.serviceId:user-service

 #Product service configuration
 zuul.routes.product-service.path:/product-service/**
 zuul.routes.product-service.serviceId:product-service

 #Product service configuration
 zuul.routes.shoppingcart-service.path:/shoppingcart-service/**
 zuul.routes.shoppingcart-service.serviceId:shoppingcart-service

 #Product service configuration
 zuul.routes.payment-service.path:/payment-service/**
 zuul.routes.payment-service.serviceId:payment-service

  #Product service configuration
 zuul.routes.ribbon-service.path:/ribbon-service/**
 zuul.routes.ribbon-service.serviceId:ribbon-service

这是我的zuul-service bootstrap.properties：

> #Application name
spring.application.name=zuul-service

#hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds: 12600
ribbon.ConnectTimeout: 6000   
ribbon.ReadTimeout: 60000
robbon.eureka.enabled: true

hystrix.command.default.execution.timeout.enabled=false

我使用的是Spring2.0.1和spring cloud Finchley.release。

有人能解释一下这是怎么回事吗？

谢谢！

Answer 1

DiscoveryClient的工作方式是，它从Eureka（服务发现）中获取称为Hearbeat的每个定义时间段的新更改列表。在有关已注册应用程序的新更改从服务发现传播到Zuul实例之前，它一定会出现错误。

您在日志中看到的输出只是确认它已经收到了该信息。