Migrate FeatureGates type of kube-proxy from string to map[string]bool

cmd/kube-proxy/app/server.go

@@ -193,7 +193,7 @@ func (o *Options) Complete() error {
 		} else {
 			o.config = c
 			// Make sure we apply the feature gate settings in the config file.
-			utilfeature.DefaultFeatureGate.Set(o.config.FeatureGates)
+			utilfeature.DefaultFeatureGate.SetFromMap(o.config.FeatureGates)
 		}
 	}
 

cmd/kube-proxy/app/server_test.go

@@ -30,6 +30,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/diff"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	api "k8s.io/kubernetes/pkg/apis/core"
+	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/proxy/apis/kubeproxyconfig"
 	"k8s.io/kubernetes/pkg/proxy/ipvs"
 	"k8s.io/kubernetes/pkg/util/configz"
@@ -413,7 +414,8 @@ conntrack:
   min: 1
   tcpCloseWaitTimeout: 10s
   tcpEstablishedTimeout: 20s
-featureGates: "all"
+featureGates:
+  SupportIPVSProxyMode: true
 healthzBindAddress: "%s"
 hostnameOverride: "foo"
 iptables:
@@ -524,7 +526,7 @@ udpIdleTimeout: 123ms
 				TCPCloseWaitTimeout:   &metav1.Duration{Duration: 10 * time.Second},
 				TCPEstablishedTimeout: &metav1.Duration{Duration: 20 * time.Second},
 			},
-			FeatureGates:       "all",
+			FeatureGates:       map[string]bool{string(features.SupportIPVSProxyMode): true},
 			HealthzBindAddress: tc.healthzBindAddress,
 			HostnameOverride:   "foo",
 			IPTables: kubeproxyconfig.KubeProxyIPTablesConfiguration{

pkg/proxy/apis/kubeproxyconfig/types.go

@@ -97,14 +97,8 @@ type KubeProxyConntrackConfiguration struct {
 type KubeProxyConfiguration struct {
 	metav1.TypeMeta
 
-	// TODO FeatureGates really should be a map but that requires refactoring all
-	// components to use config files because local-up-cluster.sh only supports
-	// the --feature-gates flag right now, which is comma-separated key=value
-	// pairs.
-	//
-	// featureGates is a comma-separated list of key=value pairs that control
-	// which alpha/beta features are enabled.
-	FeatureGates string
+	// featureGates is a map of feature names to bools that enable or disable alpha/experimental features.
+	FeatureGates map[string]bool
 
 	// bindAddress is the IP address for the proxy server to serve on (set to 0.0.0.0
 	// for all interfaces)

pkg/proxy/apis/kubeproxyconfig/v1alpha1/defaults.go

@@ -116,4 +116,7 @@ func SetDefaults_KubeProxyConfiguration(obj *KubeProxyConfiguration) {
 	if obj.ClientConnection.Burst == 0 {
 		obj.ClientConnection.Burst = 10
 	}
+	if obj.FeatureGates == nil {
+		obj.FeatureGates = make(map[string]bool)
+	}
 }

pkg/proxy/apis/kubeproxyconfig/v1alpha1/types.go

@@ -93,14 +93,8 @@ type KubeProxyConntrackConfiguration struct {
 type KubeProxyConfiguration struct {
 	metav1.TypeMeta `json:",inline"`
 
-	// TODO FeatureGates really should be a map but that requires refactoring all
-	// components to use config files because local-up-cluster.sh only supports
-	// the --feature-gates flag right now, which is comma-separated key=value
-	// pairs.
-	//
-	// featureGates is a comma-separated list of key=value pairs that control
-	// which alpha/beta features are enabled.
-	FeatureGates string `json:"featureGates"`
+	// featureGates is a map of feature names to bools that enable or disable alpha/experimental features.
+	FeatureGates map[string]bool `json:"featureGates,omitempty"`
 
 	// bindAddress is the IP address for the proxy server to serve on (set to 0.0.0.0
 	// for all interfaces)