[BUG] What is the minimum or maximum k8s version supported by YurtCluster Operator?

[OyamingO]

In k8s v1.16.6，running : "helm install yurtcluster-operator . -n kube-system" will get an Error:
INSTALLATION FAILED: failed to install CRD crds/apps.openyurt.io_nodepools.yaml: unable to recognize "": no matches for kind "CustomResourceDefinition" in version "apiextensions.k8s.io/v1beta1"

[rambohe-ch]

/assign @SataQiu @gnunu

[rambohe-ch]

In k8s v1.16.6，running : "helm install yurtcluster-operator . -n kube-system" will get an Error: INSTALLATION FAILED: failed to install CRD crds/apps.openyurt.io_nodepools.yaml: unable to recognize "": no matches for kind "CustomResourceDefinition" in version "apiextensions.k8s.io/v1beta1"

@OyamingO In your k8s env, please exec command kubectl api-resources and upload the output here.
so we can check kind CustomResourceDefinition is supported in your cluster or not.

[OyamingO]

I solved the problem by running the following code:
kind create cluster --config /home/cloud/tools/kind-cluster.yaml --image=kindest/node:v1.21.1

The reason of this problem is the k8s version >1.23. In the official code provided before, the k8s version is automatically specified by kind. So we can use the parameter --image to specify a k8s version < 1.23.