Renew the certificate for etcd nodes to communicate with each other

Synopsis

Renew the certificate for etcd nodes to communicate with each other.

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 etcd-peer [flags]

Options

--cert-dir string     Default: "/etc/kubernetes/pki"
	The path where to save the certificates
--config string
	Path to a kubeadm configuration file.
-h, --help
	help for etcd-peer
--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

--rootfs string
	[EXPERIMENTAL] The path to the 'real' host root filesystem.