func runCoreDNSAddon(c workflow.RunData) error {
	cfg, client, patchesDir, out, err := getInitData(c)
	if err != nil {
		return err
	}
	return dnsaddon.EnsureDNSAddon(&cfg.ClusterConfiguration, client, patchesDir, out, printManifest)
}

// runKubeProxyAddon installs KubeProxy addon to a Kubernetes cluster
func runKubeProxyAddon(c workflow.RunData) error {

	case 1:
		return deployments.Items[0].Spec.Replicas, nil
	default:
		return &replicas, errors.Errorf("multiple DNS addon deployments found: %v", deployments.Items)
	}
}

// EnsureDNSAddon creates the CoreDNS addon
func EnsureDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interface, patchesDir string, out io.Writer, printManifest bool) error {
	var replicas *int32
	var err error
	if !printManifest {

			out := &bytes.Buffer{}
			if err := EnsureDNSAddon(tt.args.cfg, tt.args.client, "", out, tt.args.printManifest); (err != nil) != tt.wantErr {
				t.Errorf("EnsureDNSAddon() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if gotOut := out.String(); gotOut != tt.wantOut {
				t.Errorf("Actual output of EnsureDNSAddon() does not match expected.\nActual:  %v\nExpected: %v\n", gotOut, tt.wantOut)

			"will have to skip the DNS upgrade manually",
			kubeadmconstants.CoreDNSConfigMap,
			metav1.NamespaceSystem)
	} else {
		// Upgrade CoreDNS
		if err := dns.EnsureDNSAddon(&cfg.ClusterConfiguration, client, patchesDir, out, false); err != nil {
			errs = append(errs, err)
		}
	}

	// If the kube-proxy ConfigMap is missing, show a warning and assume that kube-proxy