Merge pull request #7180 from k8s-infra-cherrypick-robot/cherry-pick-6586-to-release-1.1

[release-1.1] ✨ Make KCP's patches option mutable

Author: k8s-ci-robot

controlplane/kubeadm/api/v1beta1/kubeadm_control_plane_webhook.go

@@ -113,6 +113,8 @@ const (
 	initConfiguration    = "initConfiguration"
 	joinConfiguration    = "joinConfiguration"
 	nodeRegistration     = "nodeRegistration"
+	patches              = "patches"
+	directory            = "directory"
 	preKubeadmCommands   = "preKubeadmCommands"
 	postKubeadmCommands  = "postKubeadmCommands"
 	files                = "files"
@@ -140,7 +142,9 @@ func (in *KubeadmControlPlane) ValidateUpdate(old runtime.Object) error {
 		{spec, kubeadmConfigSpec, clusterConfiguration, controllerManager, "*"},
 		{spec, kubeadmConfigSpec, clusterConfiguration, scheduler, "*"},
 		{spec, kubeadmConfigSpec, initConfiguration, nodeRegistration, "*"},
+		{spec, kubeadmConfigSpec, initConfiguration, patches, directory},
 		{spec, kubeadmConfigSpec, joinConfiguration, nodeRegistration, "*"},
+		{spec, kubeadmConfigSpec, joinConfiguration, patches, directory},
 		{spec, kubeadmConfigSpec, preKubeadmCommands},
 		{spec, kubeadmConfigSpec, postKubeadmCommands},
 		{spec, kubeadmConfigSpec, files},

controlplane/kubeadm/api/v1beta1/kubeadm_control_plane_webhook_test.go

@@ -594,6 +594,16 @@ func TestKubeadmControlPlaneValidateUpdate(t *testing.T) {
 	validIgnitionConfigurationAfter := validIgnitionConfigurationBefore.DeepCopy()
 	validIgnitionConfigurationAfter.Spec.KubeadmConfigSpec.Ignition.ContainerLinuxConfig.AdditionalConfig = "foo: bar"
 
+	updateInitConfigurationPatches := before.DeepCopy()
+	updateInitConfigurationPatches.Spec.KubeadmConfigSpec.InitConfiguration.Patches = &bootstrapv1.Patches{
+		Directory: "/tmp/patches",
+	}
+
+	updateJoinConfigurationPatches := before.DeepCopy()
+	updateJoinConfigurationPatches.Spec.KubeadmConfigSpec.InitConfiguration.Patches = &bootstrapv1.Patches{
+		Directory: "/tmp/patches",
+	}
+
 	tests := []struct {
 		name                  string
 		enableIgnitionFeature bool
@@ -900,6 +910,18 @@ func TestKubeadmControlPlaneValidateUpdate(t *testing.T) {
 			before:    before,
 			kcp:       disableNTPServers,
 		},
+		{
+			name:      "should allow changes to initConfiguration.patches",
+			expectErr: false,
+			before:    before,
+			kcp:       updateInitConfigurationPatches,
+		},
+		{
+			name:      "should allow changes to joinConfiguration.patches",
+			expectErr: false,
+			before:    before,
+			kcp:       updateJoinConfigurationPatches,
+		},
 		{
 			name:                  "should return error when Ignition configuration is invalid",
 			enableIgnitionFeature: true,