🐛 Bump cluster-autoscaler to v1.33, adjust RBAC, pin apiVersion to v1beta1

test/e2e/autoscaler_test.go

@@ -36,7 +36,7 @@ var _ = Describe("When using the autoscaler with Cluster API using ClusterClass
 			InfrastructureMachinePoolTemplateKind: "dockermachinepooltemplates",
 			InfrastructureMachinePoolKind:         "dockermachinepools",
 			Flavor:                                ptr.To("topology-autoscaler"),
-			AutoscalerVersion:                     "v1.31.1",
+			AutoscalerVersion:                     "v1.33.0",
 		}
 	})
 })

test/e2e/data/autoscaler/autoscaler-to-workload-workload.yaml

@@ -76,6 +76,14 @@ rules:
       - get
       - list
       - watch
+  - apiGroups:
+      - "storage.k8s.io"
+    resources:
+      - volumeattachments
+    verbs:
+      - get
+      - list
+      - watch
   - apiGroups:
       - ""
     resources:
@@ -190,6 +198,12 @@ spec:
             # Note: The E2E test should only go up to 4 (assuming it starts with a min node group size of 2).
             # Using 6 for additional some buffer and to allow different starting min node group sizes.
             - --max-nodes-total=6
+          env:
+            # Per default autoscaler uses the preferred apiVersion to retrieve MachineDeployments.
+            # If that apiVersion is v1beta2 the current autoscaler implementation is not able
+            # to resolve infrastructureRefs as the ref format changed. This would break scale from zero.
+            - name: CAPI_VERSION
+              value: v1beta1
           volumeMounts:
             - name: kubeconfig-management-cluster
               mountPath: /management-cluster

test/framework/autoscaler_helpers.go

@@ -542,21 +542,31 @@ func getAuthenticationTokenForAutoscaler(ctx context.Context, managementClusterP
 	}
 	Expect(managementClusterProxy.GetClient().Create(ctx, sa)).To(Succeed(), fmt.Sprintf("failed to create %s service account", name))
 
+	var resources []string
+	if infraMachineTemplateKind != "" {
+		resources = append(resources, infraMachineTemplateKind)
+	}
+	if infraMachinePoolTemplateKind != "" {
+		resources = append(resources, infraMachinePoolTemplateKind)
+	}
+	if infraMachinePoolKind != "" {
+		resources = append(resources, infraMachinePoolKind)
+	}
 	role := &rbacv1.Role{
 		ObjectMeta: metav1.ObjectMeta{
 			Name:      name,
 			Namespace: namespace,
 		},
 		Rules: []rbacv1.PolicyRule{
 			{
-				Verbs:     []string{"get", "list", "update", "watch"},
+				Verbs:     []string{"get", "list", "watch", "patch", "update"},
 				APIGroups: []string{"cluster.x-k8s.io"},
 				Resources: []string{"machinedeployments", "machinedeployments/scale", "machinepools", "machinepools/scale", "machines", "machinesets"},
 			},
 			{
-				Verbs:     []string{"get", "list"},
+				Verbs:     []string{"get", "list", "watch"},
 				APIGroups: []string{infraAPIGroup},
-				Resources: []string{infraMachineTemplateKind, infraMachinePoolTemplateKind, infraMachinePoolKind},
+				Resources: resources,
 			},
 		},
 	}