k8s-"hostNetwork: true"网络

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      hostNetwork: true
      # 使用主机网络
      dnsPolicy: ClusterFirstWithHostNet
      # 该设置是使POD使用k8s的dns，dns配置在/etc/resolv.conf文件中
      # 如果不加，pod默认使用所在宿主主机使用的DNS，这样会导致容器
      # 内不能通过service name访问k8s集群中其他POD
      containers:
      - name: nginx
        image: nginx:1.7.9
        #ports:
        #  - name: metrics
        #    hostPort: 80
        #    containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: nginx
spec:
  selector:
    app: nginx
  type: NodePort
  ports:
    -
      name: http
      port: 80
      targetPort: 80
      protocol: TCP
      nodePort: 30080