func PrepareTokenDiscovery(d *kubeadmapi.TokenDiscovery) error {
if len(d.Addresses) == 0 {
ip, err := netutil.ChooseHostInterface()
if err != nil {
return err
}
d.Addresses = []string{ip.String() + ":" + strconv.Itoa(kubeadmapiext.DefaultDiscoveryBindPort)}
}
if err := kubeadmutil.GenerateTokenIfNeeded(d); err != nil {
return fmt.Errorf("failed to generate token(s) [%v]", err)
}
return nil
}
