暴露相关资源为一个服务,资源类型包含 pod (po), service (svc), replicationcontroller (rc), deployment (deploy), replicaset (rs)
kubectl expose rc nginx --port=80 --target-port=8000
kubectl expose -f nginx-controller.yaml --port=80 --target-port=8000 <
kubectl expose -f nginx-controller.yaml --port=80 --target-port=8000