使用Deployment控制器创建Pods并使Service发布到外网可访问

由于NFS支持节点共同读取及写入,所以可使用Deployment控制器创建多个Pod，并且每一个Pod都共享同一个目录

k8s-master

kubnet@hadoop2 volumes]$ vim pod-deploy.yml
            
　　　　　　　apiVersion: v1
            kind: Service
            metadata:
              name: myapp-nfs-svc
              namespace: default
              labels:
                app: myapp
                release: stable
            spec:
              selector:
                app: myapp
                volume: nfs
              type: NodePort
              ports:
              - name: myapp-nfs-web
                port: 80
                targetPort: 80
                nodePort: 30002
            ---
            apiVersion: extensions/v1beta1
            kind: Deployment
            metadata:
              name: myapp-nfs
              namespace: default
              labels:
                app: myapp
                release: stable
            spec:
              replicas: 3
              template:
                metadata:
                  labels:
                    app: myapp
                    volume: nfs
                spec:
                  containers:
                  - name: myapp-nfs-pod
                    image: fangwenkai/kubernetes:v1.16
                    imagePullPolicy: IfNotPresent
                    volumeMounts:
                    - name: web-nfs
                      mountPath: /usr/share/nginx/html/
                      readOnly: false
                  volumes:
                  - name: web-nfs
                    nfs:
                      path: /k8s/volumes
                      server: 192.168.23.103

kubnet@hadoop2 volumes]$ kubectl get svc

kubnet@hadoop2 volumes]$ kubectl get deployment

kubnet@hadoop2 volumes]$ kubectl get pods --show-labels -l app=myapp,volume=nfs

网页端访问本机IP+Port即可访问到index.html主页中内容(index.html内容在上一节中定义的，值为NFS-Node的主机名)