repeated Namespace items = 2;
}

// NamespaceSpec describes the attributes on a Namespace.
message NamespaceSpec {
  // Finalizers is an opaque list of values that must be empty to permanently remove object from storage.
  // More info: https://kubernetes.io/docs/tasks/administer-cluster/namespaces/
  // +optional
  repeated string finalizers = 1;
}

 and is deleted after 24 hours by default to limit the exposure of the
 valuable credential. You can create a new Bootstrap Token with
 `kubeadm token create` or make the default token permanently valid by specifying
 `--token-ttl 0` to `kubeadm init`. The default token can later be deleted with
 `kubeadm token delete`.

 - `kubeadm join` now delegates TLS Bootstrapping to the kubelet itself, instead