7B. 我用K8S部署的第一个应用（LoadBalancer可以外网访问）

跟7A差不多，只是NodePort换成了LoadBalancer。
以下4种方式都可以访问应用：
1.浏览器输入106.52.14.84:8000
2.curl 106.52.14.84:8000
3.curl 10.0.8.10:8000
4.curl 10.0.8.10:32247

chengjisihan-svc.yml

apiVersion: v1
kind: Service
metadata:
  name: chengjisihan-svc
  labels:
    app: chengji-Lab1
spec:
  #type: NodePort
  type: LoadBalancer
  ports:
   - port: 8000
     targetPort: 8000
     protocol: TCP
  selector:
    app: chengji-Lab1   

chengjisihan-pod.yml

apiVersion: v1
kind: Pod
metadata:
  name: chengji-pod
  labels:
    app: chengji-Lab1
spec:
  containers:
    - name: web
      image: seasonzhang/chengjisihanv3:1.0
      resources:
        requests:
          cpu: 100m
          memory: 128Mi
        limits:
          cpu: 250m
          memory: 256Mi
      ports:
        - containerPort: 8000
          name: chengji-pod
          protocol: TCP