使用Kubernetes运行Spring cloud(Zuul、Eureka和2个rest后端服务）

Question

我有一个带有Docker容器的微服务架构，现在想使用Kubernetes进行部署。我不能用Kubernetes运行应用程序。网关服务器没有连接到服务发现和转发请求。

为了转发请求，我设置了ingress-nginx。

我通过运行follwoing启动服务：

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml

然后

minikube addons enable ingress

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-service
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
    - http:
        paths:
          - path: /
            backend:
              serviceName: zuul-cluster-ip-service
              servicePort: 8050

Caused by: java.lang.RuntimeException: java.net.UnknownHostException: contactus-5448dd4d9c-5gj5r
    at rx.exceptions.Exceptions.propagate(Exceptions.java:57) ~[rxjava-1.3.8.jar!/:1.3.8]
    at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:463) ~[rxjava-1.3.8.jar!/:1.3.8]
    at rx.observables.BlockingObservable.single(BlockingObservable.java:340) ~[rxjava-1.3.8.jar!/:1.3.8]
    at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:112) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]
    ... 127 common frames omitted

com.netflix.zuul.exception.ZuulException: Forwarding error
    at 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]
    at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.forward(RibbonRoutingFilter.java:164) ~[spring-cloud-netflix-zuul-2.0.0.RELEASE.jar!/:2.0.0.RELEASE]
    at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.run(RibbonRoutingFilter.java:112) ~[spring-cloud-netflix-zuul-2.0.0.RELEASE.jar!/:2.0.0.RELEASE]
    at com.netflix.zuul.ZuulFilter.runFilter(ZuulFilter.java:117) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at com.netflix.zuul.FilterProcessor.processZuulFilter(FilterProcessor.java:193) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at com.netflix.zuul.FilterProcessor.runFilters(FilterProcessor.java:157) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at com.netflix.zuul.FilterProcessor.route(FilterProcessor.java:118) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at com.netflix.zuul.ZuulRunner.route(ZuulRunner.java:96) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at com.netflix.zuul.http.ZuulServlet.route(ZuulServlet.java:116) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at com.netflix.zuul.http.ZuulServlet.service(ZuulServlet.java:81) ~[zuul-core-1.3.1.jar!/:1.3.1]
    at org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:165) [spring-webmvc-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]
    at org.springframework.cloud.netflix.zuul.web.ZuulController.handleRequest(ZuulController.java:44) [spring-cloud-netflix-zuul-2.0.0.RELEASE.jar!/:2.0.0.RELEASE]
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52) [spring-webmvc-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) [spring-webmvc-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) [spring-webmvc-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]
    at or

这可能是因为服务必须通过pods名称注册。如何处理这种情况，以便每个下游服务通过其集群IP注册？

Answer 1

作为@A.L。指出SPRING_EUREKA值应该是cluster-ip：

value: http://eureka-cluster-ip-service:8761/eureka

此外，所有服务preferIpAddress都应为true：

eureka:
  instance:
    preferIpAddress: true