fix DynamicKubeletConfig feature to beta

cmd/kubeadm/app/features/features.go

@@ -39,7 +39,7 @@ const (
 	// StoreCertsInSecrets is alpha in v1.8 and v1.9
 	StoreCertsInSecrets = "StoreCertsInSecrets"
 
-	// DynamicKubeletConfig is alpha in v1.9
+	// DynamicKubeletConfig is beta in v1.11
 	DynamicKubeletConfig = "DynamicKubeletConfig"
 
 	// Auditing is beta in 1.8
@@ -53,7 +53,7 @@ var InitFeatureGates = FeatureList{
 	// We don't want to advertise this feature gate exists in v1.9 to avoid confusion as it is not yet working
 	HighAvailability:     {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}, HiddenInHelpText: true},
 	CoreDNS:              {FeatureSpec: utilfeature.FeatureSpec{Default: true, PreRelease: utilfeature.GA}},
-	DynamicKubeletConfig: {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}},
+	DynamicKubeletConfig: {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Beta}},
 	Auditing:             {FeatureSpec: utilfeature.FeatureSpec{Default: false, PreRelease: utilfeature.Alpha}},
 }
 

cmd/kubeadm/app/phases/kubelet/dynamic.go

@@ -36,7 +36,7 @@ func EnableDynamicConfigForNode(client clientset.Interface, nodeName string, kub
 	configMapName := configMapName(kubeletVersion)
 	fmt.Printf("[kubelet] Enabling Dynamic Kubelet Config for Node %q; config sourced from ConfigMap %q in namespace %s\n",
 		nodeName, configMapName, metav1.NamespaceSystem)
-	fmt.Println("[kubelet] WARNING: The Dynamic Kubelet Config feature is alpha and off by default. It hasn't been well-tested yet at this stage, use with caution.")
+	fmt.Println("[kubelet] WARNING: The Dynamic Kubelet Config feature is beta, but off by default. It hasn't been well-tested yet at this stage, use with caution.")
 
 	kubeletConfigMap, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(configMapName, metav1.GetOptions{})
 	if err != nil {