Enable selfHosted feature flag

cmd/kubeadm/app/apis/kubeadm/types.go

@@ -39,11 +39,6 @@ type MasterConfiguration struct {
 	Token    string
 	TokenTTL time.Duration
 
-	// SelfHosted enables an alpha deployment type where the apiserver, scheduler, and
-	// controller manager are managed by Kubernetes itself. This option is likely to
-	// become the default in the future.
-	SelfHosted bool
-
 	APIServerExtraArgs         map[string]string
 	ControllerManagerExtraArgs map[string]string
 	SchedulerExtraArgs         map[string]string

cmd/kubeadm/app/apis/kubeadm/v1alpha1/types.go

@@ -38,11 +38,6 @@ type MasterConfiguration struct {
 	Token    string        `json:"token"`
 	TokenTTL time.Duration `json:"tokenTTL"`
 
-	// SelfHosted enables an alpha deployment type where the apiserver, scheduler, and
-	// controller manager are managed by Kubernetes itself. This option is likely to
-	// become the default in the future.
-	SelfHosted bool `json:"selfHosted"`
-
 	APIServerExtraArgs         map[string]string `json:"apiServerExtraArgs"`
 	ControllerManagerExtraArgs map[string]string `json:"controllerManagerExtraArgs"`
 	SchedulerExtraArgs         map[string]string `json:"schedulerExtraArgs"`

cmd/kubeadm/app/cmd/BUILD

@@ -24,6 +24,7 @@ go_library(
         "//cmd/kubeadm/app/apis/kubeadm:go_default_library",
         "//cmd/kubeadm/app/apis/kubeadm/v1alpha1:go_default_library",
         "//cmd/kubeadm/app/apis/kubeadm/validation:go_default_library",
+        "//cmd/kubeadm/app/cmd/features:go_default_library",
         "//cmd/kubeadm/app/cmd/phases:go_default_library",
         "//cmd/kubeadm/app/constants:go_default_library",
         "//cmd/kubeadm/app/discovery:go_default_library",

cmd/kubeadm/app/cmd/features/features.go

@@ -31,6 +31,12 @@ const (
 // FeatureList represents a list of feature gates
 type FeatureList map[utilfeature.Feature]utilfeature.FeatureSpec
 
+// Enabled indicates whether a feature name has been enabled
+func Enabled(featureList map[string]bool, featureName utilfeature.Feature) bool {
+	_, ok := featureList[string(featureName)]
+	return ok
+}
+
 // Supports indicates whether a feature name is supported on the given
 // feature set
 func Supports(featureList FeatureList, featureName string) bool {

cmd/kubeadm/app/cmd/init.go

@@ -31,6 +31,7 @@ import (
 	kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 	kubeadmapiext "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1alpha1"
 	"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/validation"
+	"k8s.io/kubernetes/cmd/kubeadm/app/cmd/features"
 	cmdphases "k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases"
 	kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
 	addonsphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/addons"
@@ -147,10 +148,6 @@ func NewCmdInit(out io.Writer) *cobra.Command {
 		&skipTokenPrint, "skip-token-print", skipTokenPrint,
 		"Skip printing of the default bootstrap token generated by 'kubeadm init'",
 	)
-	cmd.PersistentFlags().BoolVar(
-		&cfg.SelfHosted, "self-hosted", cfg.SelfHosted,
-		"[experimental] If kubeadm should make this control plane self-hosted",
-	)
 
 	cmd.PersistentFlags().StringVar(
 		&cfg.Token, "token", cfg.Token,
@@ -288,7 +285,7 @@ func (i *Init) Run(out io.Writer) error {
 	}
 
 	// Is deployment type self-hosted?
-	if i.cfg.SelfHosted {
+	if features.Enabled(i.cfg.FeatureFlags, features.SelfHosting) {
 		// Temporary control plane is up, now we create our self hosted control
 		// plane components and remove the static manifests:
 		fmt.Println("[self-hosted] Creating self-hosted control plane...")