安裝ingress-nginx

參照這個網(wǎng)站： Installation Guide - NGINX Ingress Controller (kubernetes.github.io)
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.1.1/deploy/static/provider/cloud/deploy.yaml
我使用的是 with kubectl apply, using YAML manifests; 使用yaml的方式部署

注意在線的方式部署，需要將yaml中的image先down下來。如果down不下來，可以使用國內(nèi)的一些鏡像倉庫

準備容器主要是學(xué)習(xí)B站上黑馬的課程中的文件
Kubernetes(K8S) 入門進階實戰(zhàn)完整教程，黑馬程序員K8S全套教程（基礎(chǔ)+高級）_嗶哩嗶哩_bilibili

創(chuàng)建tomcat-nginx.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: dev
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx-pod
  template:
    metadata:
      labels:
        app: nginx-pod
    spec:
      containers:
      - name: nginx
        image: nginx:1.17.1
        ports:
        - containerPort: 80

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcat-deployment
  namespace: dev
spec:
  replicas: 3
  selector:
    matchLabels:
      app: tomcat-pod
  template:
    metadata:
      labels:
        app: tomcat-pod
    spec:
      containers:
      - name: tomcat
        image: tomcat:8.5-jre10-slim
        ports:
        - containerPort: 8080

---

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
  namespace: dev
spec:
  selector:
    app: nginx-pod
  clusterIP: None
  type: ClusterIP
  ports:
  - port: 80
    targetPort: 80

---

apiVersion: v1
kind: Service
metadata:
  name: tomcat-service
  namespace: dev
spec:
  selector:
    app: tomcat-pod
  clusterIP: None
  type: ClusterIP
  ports:
  - port: 8080
    targetPort: 8080

# 創(chuàng)建
[root@master ~]# kubectl create -f tomcat-nginx.yaml

# 查看
[root@master ~]# kubectl get svc -n dev
NAME             TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)    AGE
nginx-service    ClusterIP   None         <none>        80/TCP     48s
tomcat-service   ClusterIP   None         <none>        8080/TCP   48s

Http代理

創(chuàng)建ingress-http.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-http
  namespace: dev
spec:
  rules:
  - host: nginx.itheima.com
    http:
      paths:
      - path: /
        backend:
          serviceName: nginx-service
          servicePort: 80
  - host: tomcat.itheima.com
    http:
      paths:
      - path: /
        backend:
          serviceName: tomcat-service
          servicePort: 8080

問題： 通過上述配置好之后，通過瀏覽器，不能訪問？

image.png

開始分析問題

1. 檢查 ingress 服務(wù)

 kubectl get service -n ingress-nginx

image.png

2. 檢查ingress 的pod信息

kubectl get pods -n ingress-nginx

image.png

3. 檢查應(yīng)用服務(wù)，主要工作空間

kubectl get service -n dev

image.png

4. 檢查應(yīng)用的pod

kubectl get pods  -n dev -o wide

image.png

5. 驗證容器服務(wù)的正確性

   
   
   image.png

通過ingress service來查看NGINX也是正常的，不知道哪里問

image.png

最后在一個b站的視頻上看到，要把這個配置給注釋掉，也就是去掉，問題解決.

externalTrafficPolicy: Local