https://v1-32.docs.kubernetes.io/docs/reference/kubectl/generated/kubectl_exec/
kubectl exec | Kubernetes
Production-Grade Container Orchestration
kubectl execkubernetes
https://cygwin.com/pipermail/cygwin/2020-June/245196.html
"kubectl exec" in Cygwin gets "Upgrade request required", but not in cmd shell
kubectl execupgrade request
https://v1-33.docs.kubernetes.io/docs/reference/kubectl/generated/kubectl_exec/
kubectl exec | Kubernetes
Production-Grade Container Orchestration
kubectl execkubernetes
https://v1-33.docs.kubernetes.io/zh-cn/docs/reference/kubectl/generated/kubectl_exec/
kubectl exec | Kubernetes
kubectl execkubernetes