add Feature Gate.

pkg/features/kube_features.go

@@ -336,6 +336,12 @@ const (
 	// deletion ordering.
 	HonorPVReclaimPolicy featuregate.Feature = "HonorPVReclaimPolicy"
 
+	// owner: @HirazawaUi
+	// kep: https://kep.k8s.io/4762
+	//
+	// Allows setting any FQDN as the pod's hostname
+	HostnameOverride featuregate.Feature = "HostnameOverride"
+
 	// owner: @haircommander
 	// kep: http://kep.k8s.io/4210
 	// ImageMaximumGCAge enables the Kubelet configuration field of the same name, allowing an admin
@@ -1243,6 +1249,10 @@ var defaultVersionedKubernetesFeatureGates = map[featuregate.Feature]featuregate
 		{Version: version.MustParse("1.33"), Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.36
 	},
 
+	HostnameOverride: {
+		{Version: version.MustParse("1.34"), Default: false, PreRelease: featuregate.Alpha},
+	},
+
 	ImageMaximumGCAge: {
 		{Version: version.MustParse("1.29"), Default: false, PreRelease: featuregate.Alpha},
 		{Version: version.MustParse("1.30"), Default: true, PreRelease: featuregate.Beta},

test/compatibility_lifecycle/reference/versioned_feature_list.yaml

@@ -567,6 +567,12 @@
     lockToDefault: true
     preRelease: GA
     version: "1.33"
+- name: HostnameOverride
+  versionedSpecs:
+  - default: false
+    lockToDefault: false
+    preRelease: Alpha
+    version: "1.34"
 - name: HPAConfigurableTolerance
   versionedSpecs:
   - default: false