Google Kubernetes引擎入口不工作

Question

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ReplicaSet,Service,Ingress创建成功,nodeport可以从公有IP地址访问,Ingress无不良。

副本集：

apiVersion: apps/v1beta2
kind: ReplicaSet
metadata:
  name: kubia
spec:
  replicas: 3
  selector:
    matchLabels:
      app: kubia
  template:
    metadata:
        labels:
          app: kubia
    spec:
      containers:
      - name: kubia
        image: sonyfaye/kubia

服务：

apiVersion: v1
kind: Service
metadata:
  name: kubia-nodeport
spec:
  type: NodePort
  ports:
  - port: 80
    targetPort: 8080
    nodePort: 30123
  selector:
    app: kubia

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: kubia
spec:
  rules:
  - host: kubia.example.com
    http:
      paths:
      - path: /
        backend: 
          serviceName: kubia-nodeport
          servicePort: 80

NAME             TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
kubernetes       ClusterIP   10.59.240.1    <none>        443/TCP        8d
kubia-nodeport   NodePort    10.59.253.10   <none>        80:30123/TCP   20h

NAME                                   STATUS   ROLES    AGE   VERSION
gke-kubia-default-pool-08dd2133-qbz6   Ready    <none>   8d    v1.12.8-gke.6
gke-kubia-default-pool-183639fa-18vr   Ready    <none>   8d    v1.12.8-gke.6
gke-kubia-default-pool-42725220-43q8   Ready    <none>   8d    v1.12.8-gke.6

NAME                                   STATUS   ROLES    AGE   VERSION         INTERNAL-IP   EXTERNAL-IP      OS-IMAGE                             KERNEL-VERSION   CONTAINER-RUNTIME
gke-kubia-default-pool-08dd2133-qbz6   Ready    <none>   8d    v1.12.8-gke.6   10.140.0.17   35.201.224.238   Container-Optimized OS from Google   4.14.119+        docker://17.3.2
gke-kubia-default-pool-183639fa-18vr   Ready    <none>   8d    v1.12.8-gke.6   10.140.0.18   35.229.152.12    Container-Optimized OS from Google   4.14.119+        docker://17.3.2
gke-kubia-default-pool-42725220-43q8   Ready    <none>   8d    v1.12.8-gke.6   10.140.0.16   34.80.225.64     Container-Optimized OS from Google   4.14.119+        docker://17.3.2

You've hit kubia-j2lnr

主机文件：

34.98.92.110 kubia.example.com

C:\kube>kubectl描述入口

Name:             kubia
Namespace:        default
Address:          34.98.92.110
Default backend:  default-http-backend:80 (10.56.0.7:8080)
Rules:
  Host               Path  Backends
  ----               ----  --------
  kubia.example.com
                     /   kubia-nodeport:80 (10.56.0.14:8080,10.56.1.6:8080,10.56.3.4:8080)
Annotations:
  ingress.kubernetes.io/backends:         {"k8s-be-30123--c4addd497b1e0a6d":"HEALTHY","k8s-be-30594--c4addd497b1e0a6d":"HEALTHY"}
  ingress.kubernetes.io/forwarding-rule:  k8s-fw-default-kubia--c4addd497b1e0a6d
  ingress.kubernetes.io/target-proxy:     k8s-tp-default-kubia--c4addd497b1e0a6d
  ingress.kubernetes.io/url-map:          k8s-um-default-kubia--c4addd497b1e0a6d
Events:    

                               <none>

C:\kube>curl http://kubia.example.com

curl: (7) Failed to connect to kubia.example.com port 80: Timed out

Connecting To kubia.example.com...

Connecting To 34.98.92.110...Could not open connection to the host, on port 80: Connect failed

C:\kube>kubectl exec-it kubia-lrt9x bash

root@kubia-lrt9x:/# curl http://kubia.example.com
curl: (6) Could not resolve host: kubia.example.com

root@kubia-lrt9x:/#coll http://34.98.92.110default backend-404root@kubia-lrt9x:/#coll http://34.98.92.110default backend-404root@kubia-lrt9x:/#coll http://10.56.0.7:8080default backend-404root@kubia-lrt9x:/#

有人知道怎么调试吗？

节点端口已添加到防火墙，否则节点端口不可访问。入口IP似乎不需要添加到防火墙中。

Answer 1

尝试公开replicaset以便能够从外部连接：

$ kubectl expose rs hello-world --type=NodePort --name=my-service

记住首先删除服务kubia-nodeport并删除入口配置文件中的selector和section with service，然后使用kubectl apply命令应用更改。

更多信息可以在这里找到：exposing-externalip。