Prepend sed command on KCPT prekubadm commands

sed commands mutate the kube-vip template with variables to configure
kube-vip.

templates/cluster-template-clusterclass.yaml

@@ -108,6 +108,22 @@ spec:
         kind: NutanixClusterTemplate
         matchResources:
           infrastructureCluster: true
+    - jsonPatches:
+      - op: add
+        path: /spec/template/spec/kubeadmConfigSpec/preKubeadmCommands/-
+        valueFrom:
+          template: |
+            sed -i 's/control_plane_endpoint_ip/{{ .controlPlaneEndpoint.IP }}/g' /etc/kubernetes/manifests/kube-vip.yaml
+      - op: add
+        path: /spec/template/spec/kubeadmConfigSpec/preKubeadmCommands/-
+        valueFrom:
+          template: |
+            sed -i 's/control_plane_endpoint_port/{{ .controlPlaneEndpoint.port }}/g' /etc/kubernetes/manifests/kube-vip.yaml
+      selector:
+        apiVersion: controlplane.cluster.x-k8s.io/v1beta1
+        kind: KubeadmControlPlaneTemplate
+        matchResources:
+          controlPlane: true
     name: update-control-plane-endpoint
   - definitions:
     - jsonPatches:
@@ -425,9 +441,9 @@ spec:
                     - name: vip_arp
                       value: "true"
                     - name: address
-                      value: "${CONTROL_PLANE_ENDPOINT_IP}"
+                      value: "control_plane_endpoint_ip"
                     - name: port
-                      value: "${CONTROL_PLANE_ENDPOINT_PORT=6443}"
+                      value: "control_plane_endpoint_port"
                     - name: vip_cidr
                       value: "32"
                     - name: cp_enable

templates/clusterclass/clusterclass.yaml

@@ -125,6 +125,22 @@ spec:
               template: |
                 host: '{{ .controlPlaneEndpoint.IP }}'
                 port: {{ .controlPlaneEndpoint.port }}
+    - selector:
+        apiVersion: controlplane.cluster.x-k8s.io/v1beta1
+        kind: KubeadmControlPlaneTemplate
+        matchResources:
+          controlPlane: true
+      jsonPatches:
+        - op: "add"
+          path: "/spec/template/spec/kubeadmConfigSpec/preKubeadmCommands/-"
+          valueFrom:
+            template: |
+              sed -i 's/control_plane_endpoint_ip/{{ .controlPlaneEndpoint.IP }}/g' /etc/kubernetes/manifests/kube-vip.yaml
+        - op: "add"
+          path: "/spec/template/spec/kubeadmConfigSpec/preKubeadmCommands/-"
+          valueFrom:
+              template: |
+                sed -i 's/control_plane_endpoint_port/{{ .controlPlaneEndpoint.port }}/g' /etc/kubernetes/manifests/kube-vip.yaml
   - name: add-pc-endpoint-and-creds
     definitions:
     - selector:

templates/clusterclass/kcpt.yaml

@@ -40,9 +40,9 @@ spec:
                       - name: vip_arp
                         value: "true"
                       - name: address
-                        value: "${CONTROL_PLANE_ENDPOINT_IP}"
+                        value: "control_plane_endpoint_ip"
                       - name: port
-                        value: "${CONTROL_PLANE_ENDPOINT_PORT=6443}"
+                        value: "control_plane_endpoint_port"
                       - name: vip_cidr
                         value: "32"
                       - name: cp_enable

templates/template_test.go

@@ -294,4 +294,36 @@ var _ = Describe("Cluster Class Template Patches Test Suite", Ordered, func() {
 			Expect(clnt.Delete(context.Background(), obj)).NotTo(HaveOccurred())
 		})
 	})
+
+	Describe("patches for control plane endpoint kubevip", func() {
+		It("kubevip should have correct control plane endpoint", func() {
+			clusterManifest := "testdata/cluster-with-control-plane-endpoint.yaml"
+			obj, err := getClusterManifest(clusterManifest)
+			Expect(err).NotTo(HaveOccurred())
+
+			err = clnt.Create(context.Background(), obj) // Create the cluster
+			Expect(err).NotTo(HaveOccurred())
+
+			var nutanixCluster *v1beta1.NutanixCluster
+			Eventually(func() error {
+				nutanixCluster, err = fetchNutanixCluster(clnt, obj.GetName())
+				return err
+			}).Within(time.Minute).Should(Succeed())
+
+			Expect(nutanixCluster.Spec.ControlPlaneEndpoint).NotTo(BeNil())
+			Expect(nutanixCluster.Spec.ControlPlaneEndpoint.Host).To(Equal("1.2.3.4"))
+			Expect(nutanixCluster.Spec.ControlPlaneEndpoint.Port).To(Equal(int32(6443)))
+
+			var kubeadmcontrolplane *controlplanev1.KubeadmControlPlane
+			Eventually(func() error {
+				kcp, err := fetchKubeadmControlPlane(clnt, obj.GetName())
+				kubeadmcontrolplane = kcp
+				return err
+			}).Within(time.Minute).Should(Succeed())
+			Expect(kubeadmcontrolplane.Spec.KubeadmConfigSpec.PreKubeadmCommands).To(ContainElements(
+				"sed -i 's/control_plane_endpoint_ip/1.2.3.4/g' /etc/kubernetes/manifests/kube-vip.yaml",
+				"sed -i 's/control_plane_endpoint_port/6443/g' /etc/kubernetes/manifests/kube-vip.yaml",
+			))
+		})
+	})
 })

templates/testdata/cluster-with-control-plane-endpoint.yaml

@@ -0,0 +1,52 @@
+apiVersion: cluster.x-k8s.io/v1beta1
+kind: Cluster
+metadata:
+  labels:
+    ccm: nutanix
+    cluster.x-k8s.io/cluster-name: cluster-with-control-plane-endpoint
+  name: cluster-with-control-plane-endpoint
+spec:
+  topology:
+    class: nutanix-quick-start
+    controlPlane:
+      metadata: {}
+      replicas: 1
+    variables:
+      - name: sshKey
+        value: ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMe61GqA9gqeX3zDCiwuU8zEDt3ckLnfVm8ZxN7UuFyL user@host
+      - name: controlPlaneEndpoint
+        value:
+          IP: 1.2.3.4
+          port: 6443
+      - name: prismCentralEndpoint
+        value:
+          address: prismcentral.fake
+          credentialSecret: nutanix-quick-start-pc-creds
+          insecure: false
+          port: 9440
+      - name: controlPlaneMachineDetails
+        value:
+          bootType: legacy
+          clusterName: fake-cluster
+          imageName: ubuntu-2204-kube-v1.29.2.qcow2
+          memorySize: 4Gi
+          subnetName: fake-subnet
+          systemDiskSize: 40Gi
+          vcpuSockets: 2
+          vcpusPerSocket: 1
+      - name: workerMachineDetails
+        value:
+          bootType: legacy
+          clusterName: fake-cluster
+          imageName: ubuntu-2204-kube-v1.29.2.qcow2
+          memorySize: 4Gi
+          subnetName: fake-subnet
+          systemDiskSize: 40Gi
+          vcpuSockets: 2
+          vcpusPerSocket: 1
+    version: v1.29.2
+    workers:
+      machineDeployments:
+        - class: nutanix-quick-start-worker
+          name: md-0
+          replicas: 2