실습관련

kubernetes를 다시 설치하고 

web namespace 생성하고,

nginx- yaml 파일을 생성했는데

아래와 같은 error가 나서요..

root@master0:~/storage/statefulset# kc create -f nginx-statefulste.yaml 

service/nginx created

error: resource mapping not found for name: "web" namespace: "" from "nginx-statefulste.yaml": no matches for kind "Statefulset" in version "apps/v1"

ensure CRDs are installed first

CustomResourceDefinition 을 생성을 해야되는걸까요?