return kubernetesReleaseVersion(body, fetcher)
	}
	return "", errors.Errorf("version %q doesn't match patterns for neither semantic version nor labels (stable, latest, ...)", version)
}

// KubernetesVersionToImageTag is helper function that replaces all
// non-allowed symbols in tag strings with underscores.
// Image tag can only contain lowercase and uppercase letters, digits,
// underscores, periods and dashes.

func GetKubernetesImage(image string, cfg *kubeadmapi.ClusterConfiguration) string {
	repoPrefix := cfg.GetControlPlaneImageRepository()
	kubernetesImageTag := kubeadmutil.KubernetesVersionToImageTag(cfg.KubernetesVersion)
	return GetGenericImage(repoPrefix, image, kubernetesImageTag)
}

// GetDNSImage generates and returns the image for CoreDNS.
func GetDNSImage(cfg *kubeadmapi.ClusterConfiguration) string {