Synopsis kubectl controls the Kubernetes cluster manager.
Find more information at: https://kubernetes.io/docs/reference/kubectl/overview/
kubectl [flags] Options     --add-dir-header   If true, adds the file directory to the header of the log messages   --alsologtostderr   log to standard error as well as files   --as string   Username to impersonate for the operation   --as-group stringArray   Group to impersonate for the operation, this flag can be repeated to specify multiple groups.

Kubernetes requires PKI certificates for authentication over TLS. If you install Kubernetes with kubeadm, the certificates that your cluster requires are automatically generated. You can also generate your own certificates -- for example, to keep your private keys more secure by not storing them on the API server. This page explains the certificates that your cluster requires.
How certificates are used by your cluster Kubernetes requires PKI for the following operations: