service和pod绑定
apiVersion: v1
kind: Service
metadata:
name: my-haproxy
labels:
app: my-haproxy
spec:
ports:
- port: 8078
targetPort: 6443
selector:
app: my-haproxy
externalIPs:
- 192.168.0.12
原文：https://www.cnblogs.com/wenlin-gk/p/9857669.html