svc+ep除了能代理pod，还能代理集群之外的服务，如mysql等
			在服务器部署mariadb服务，并启动服务、修改root密码等
			yum install mariadb-server
			mysql_secure_installation
			mysql -u root -p

		    在k8s集群创建svc和ep的yaml
			

			```bash
			vi mysql-svc.yaml
			apiVersion: v1
			kind: Service
			metadata:
			  name: mysql
			spec:
			  type: ClusterIP
			  ports:
			  - port: 3306
			---
			apiVersion: v1
			kind: Endpoints
			metadata:
			  name: mysql
			subsets:
			- addresses:
			  - ip: 172.16.80.132
			  ports:
			  - port: 3306
			```