错误: getaddrinfo ENOTFOUND ingress-nginx.ingress-nginx-controller.svc.cluster.local

Question

我正在使用NextJS，当它在服务器或浏览器上发出请求时，我需要让它知道。要在服务器端执行此操作，因为我是在微服务体系结构中构建的，所以我需要获取服务名称和服务的命名空间，以完成类似于http://SERVICENAME.NAMESPACE.svc.cluster.local的url。

因此，在我的终端中，我打印出了所有不同的名称空间，如下所示：

$kubectl get namespace

NAME              STATUS   AGE
default           Active   9d
ingress-nginx     Active   9d
kube-node-lease   Active   9d
kube-public       Active   9d
kube-system       Active   9d

所以ingress-nginx就是我要找的。然后我运行：

$kubectl get services -n ingress-nginx

NAME                                 TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
ingress-nginx-controller             LoadBalancer   10.100.129.149   localhost     80:30463/TCP,443:31399/TCP   9d
ingress-nginx-controller-admission   ClusterIP      10.111.40.184    <none>        443/TCP                      9d

因此，据我所知，ingress-nginx-controller是我的服务的名称。

所以我向http://ingress-nginx.ingress-nginx-controller.svc.cluster.local/api/users/currentuser发出了请求，但我还必须指定一个主机，如下所示：

LandingPage.getInitialProps = async () => {
  if (typeof window === "undefined") {
    const { data } = await axios.get(
      "http://ingress-nginx.ingress-nginx-controller.svc.cluster.local/api/users/currentuser",
      {
        headers: {
          Host: "ticketing.dev",
        },
      }
    );

    return data;
  } else {
    const { data } = await axios.get("/api/users/currentuser");

    return data;
  }
};

但当我发出请求时，我仍然会在浏览器上打印以下内容：

​

​

我调出了kubectl日志，所有东西都是200的

192.168.65.3 - - [06/Nov/2020:01:30:15 +0000] "GET /_next/static/chunks/pages/_app.js?ts=1604626215582 HTTP/2.0" 200 600778 "https://ticketing.dev/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" 51 0.131 [default-client-srv-3000] [] 10.1.0.244:3000 601240 0.132 200 406761022b9aad1a8cd45b9574f3082c
192.168.65.3 - - [06/Nov/2020:01:30:15 +0000] "GET /_next/static/chunks/main.js?ts=1604626215582 HTTP/2.0" 200 1141017 "https://ticketing.dev/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" 46 0.259 [default-client-srv-3000] [] 10.1.0.244:3000 1141886 0.258 200 da2d882e400bebe57a8ce403acd55c8b
192.168.65.3 - - [06/Nov/2020:01:30:16 +0000] "GET /_next/static/chunks/0.js HTTP/2.0" 200 1578 "https://ticketing.dev/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" 32 0.003 [default-client-srv-3000] [] 10.1.0.244:3000 1595 0.003 200 264ab274cf006691d92b1f03f05ffbca
192.168.65.3 - - [06/Nov/2020:01:30:27 +0000] "GET /_next/webpack-hmr?page=/ HTTP/2.0" 200 1499 "https://ticketing.dev/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" 34 11.495 [default-client-srv-3000] [] 10.1.0.244:3000 1543 11.495 200 99420f1d80b74b84c0cb42ead9981d43

我遗漏了什么？我不认为问题出在ingress-srv.yml文件中：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-service
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/use-regex: "true"
spec:
  rules:
    - host: ticketing.dev
      http:
        paths:
          - path: /api/users/?(.*)
            backend:
              serviceName: auth-srv
              servicePort: 3000
          - path: /?(.*)
            backend:
              serviceName: client-srv
              servicePort: 3000

Answer 1

根据访问服务的URL：

http://SERVICENAME.NAMESPACE.svc.cluster.local 

所以它应该是

http://ingress-nginx-controller.ingress-nginx.svc.cluster.local

Answer 2

使用minikube时，nginx控制器有时不会暴露。

$ kubectl expose deployment ingress-nginx-controller --target-port=80 --type=NodePort -n kube-system