Generates the certificate for serving etcd
Renews the certificate for serving etcd, and saves them into etcd/server.cert and etcd/server.key files.
Extra attributes such as SANs will be based on the existing certificates, there is no need to resupply them.
kubeadm alpha phase certs renew etcd-server [flags]
|--cert-dir string Default: "/etc/kubernetes/pki"|
|The path where to save the certificates|
|Path to kubeadm config file (WARNING: Usage of a configuration file is experimental)|
|help for etcd-server|
|--kubeconfig string Default: "/etc/kubernetes/admin.conf"|
|The KubeConfig file to use when talking to the cluster. If the flag is not set, a set of standard locations are searched for an existing KubeConfig file.|
|Use the Kubernetes certificate API to renew certificates|
|[EXPERIMENTAL] The path to the 'real' host root filesystem.|