k8s服务暴露方式：通过Nginx-Ingress部署（HTTP、HTTPS形式）

    apiVersion: extensions/v1beta1
    kind: Deployment
    metadata:
      name: demo-tomcat-java-demo
      labels:
    wayne-app: demo
    wayne-ns: demo
    app: demo-tomcat-java-demo
    spec:
      selector:
    matchLabels:
      app: demo-tomcat-java-demo
      template:
    metadata:
      labels:
        wayne-app: demo
        wayne-ns: demo
        app: demo-tomcat-java-demo
    spec:
      imagePullSecrets:
        - name: demo-registry-pull-secret
      containers:
        - resources:
            limits:
              memory: 2Gi
              cpu: '1'