Renew the certificate for serving the Kubernetes API
Renew the certificate for serving the Kubernetes API.
Renewals run unconditionally, regardless of certificate expiration date; extra attributes such as SANs will be based on the existing file/certificates, there is no need to resupply them.
Renewal by default tries to use the certificate authority in the local PKI managed by kubeadm; as alternative it is possible to use K8s certificate API for certificate renewal, or as a last option, to generate a CSR request.
After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
kubeadm certs renew apiserver [flags]
|--cert-dir string Default: "/etc/kubernetes/pki"|
The path where to save the certificates
Path to a kubeadm configuration file.
help for apiserver
|--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 can be searched for an existing kubeconfig file.
Options inherited from parent commands
[EXPERIMENTAL] The path to the 'real' host root filesystem.