Add variable for setting the GPUs on cluster

The change also includes a patch to set the GPUs on
nutanixmachinetemplate resources for control plane and worker
machine deployments.

templates/cluster-template-clusterclass.yaml

@@ -297,6 +297,31 @@ spec:
             - nutanix-quick-start-worker
     enabledIf: '{{if .additionalCategories}}true{{end}}'
     name: add-additional-categories
+  - definitions:
+    - jsonPatches:
+      - op: add
+        path: /spec/template/spec/gpus
+        valueFrom:
+          variable: gpus
+      selector:
+        apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+        kind: NutanixMachineTemplate
+        matchResources:
+          controlPlane: true
+    - jsonPatches:
+      - op: add
+        path: /spec/template/spec/gpus
+        valueFrom:
+          variable: gpus
+      selector:
+        apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+        kind: NutanixMachineTemplate
+        matchResources:
+          machineDeploymentClass:
+            names:
+            - nutanix-quick-start-worker
+    enabledIf: '{{if .gpus}}true{{end}}'
+    name: add-gpus
   variables:
   - name: sshKey
     required: true
@@ -440,6 +465,21 @@ spec:
               type: string
           type: object
         type: array
+  - name: gpus
+    required: false
+    schema:
+      description: List of GPUs to be used in the machine deployment in cluster.
+      openAPIV3Schema:
+        items:
+          properties:
+            deviceID:
+              type: integer
+            name:
+              type: string
+            type:
+              type: string
+          type: object
+        type: array
   workers:
     machineDeployments:
     - class: nutanix-quick-start-worker

templates/clusterclass/clusterclass.yaml

@@ -313,6 +313,31 @@ spec:
             path: /spec/template/spec/additionalCategories
             valueFrom:
               variable: additionalCategories
+  - name: add-gpus
+    enabledIf: "{{if .gpus}}true{{end}}"
+    definitions:
+      - selector:
+          apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+          kind: NutanixMachineTemplate
+          matchResources:
+            controlPlane: true
+        jsonPatches:
+          - op: add
+            path: /spec/template/spec/gpus
+            valueFrom:
+              variable: gpus
+      - selector:
+          apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+          kind: NutanixMachineTemplate
+          matchResources:
+            machineDeploymentClass:
+              names:
+                - nutanix-quick-start-worker
+        jsonPatches:
+          - op: add
+            path: /spec/template/spec/gpus
+            valueFrom:
+              variable: gpus
   variables:
   - name: sshKey
     required: true
@@ -456,3 +481,18 @@ spec:
               type: string
             value:
               type: string
+  - name: gpus
+    required: false
+    schema:
+      openAPIV3Schema:
+        type: array
+        items:
+          type: object
+          properties:
+            name:
+              type: string
+            deviceID:
+              type: integer
+            type:
+              type: string
+      description: List of GPUs to be used in the machine deployment in cluster.

templates/template_test.go

@@ -19,6 +19,7 @@ import (
 	"k8s.io/client-go/kubernetes/scheme"
 	"k8s.io/client-go/tools/clientcmd"
 	"k8s.io/klog/v2/textlogger"
+	"k8s.io/utils/ptr"
 	capiv1 "sigs.k8s.io/cluster-api/api/v1beta1"
 	clusterctllog "sigs.k8s.io/cluster-api/cmd/clusterctl/log"
 	controlplanev1 "sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1beta1"
@@ -400,4 +401,35 @@ var _ = Describe("Cluster Class Template Patches Test Suite", Ordered, func() {
 				})))))
 		})
 	})
+
+	Describe("patches for GPUs", func() {
+		It("should have correct GPUs", func() {
+			clusterManifest := "testdata/cluster-with-gpu.yaml"
+			obj, err := getClusterManifest(clusterManifest)
+			Expect(err).NotTo(HaveOccurred())
+
+			err = clnt.Create(context.Background(), obj) // Create the cluster
+			Expect(err).NotTo(HaveOccurred())
+
+			Eventually(func() error {
+				_, err = fetchNutanixCluster(clnt, obj.GetName())
+				return err
+			}).Within(time.Minute).Should(Succeed())
+
+			Eventually(func() ([]*v1beta1.NutanixMachineTemplate, error) {
+				return fetchMachineTemplates(clnt, obj.GetName())
+			}).Within(time.Minute).Should(And(HaveLen(2),
+				HaveEach(HaveExistingField("Spec.Template.Spec.GPUs")),
+				HaveEach(HaveField("Spec.Template.Spec.GPUs", HaveLen(2))),
+				HaveEach(HaveField("Spec.Template.Spec.GPUs", ContainElement(v1beta1.NutanixGPU{
+					Type: v1beta1.NutanixGPUIdentifierName,
+					Name: ptr.To("fake-gpu"),
+				}))),
+				HaveEach(HaveField("Spec.Template.Spec.GPUs", ContainElement(v1beta1.NutanixGPU{
+					Type:     v1beta1.NutanixGPUIdentifierDeviceID,
+					DeviceID: ptr.To(int64(42)),
+				}))),
+			))
+		})
+	})
 })

templates/testdata/cluster-with-gpu.yaml

@@ -0,0 +1,58 @@
+apiVersion: cluster.x-k8s.io/v1beta1
+kind: Cluster
+metadata:
+  labels:
+    ccm: nutanix
+    cluster.x-k8s.io/cluster-name: cluster-with-gpu
+  name: cluster-with-gpu
+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
+      - name: gpus
+        value:
+          - type: name
+            name: fake-gpu
+          - type: deviceID
+            deviceID: 42
+    version: v1.29.2
+    workers:
+      machineDeployments:
+        - class: nutanix-quick-start-worker
+          name: md-0
+          replicas: 2