[release-1.13] 🐛 Remove finalizer from VSphereMachine during deletion if ownerRef was never set

controllers/vspheremachine_controller.go

@@ -207,6 +207,21 @@ func (r *machineReconciler) Reconcile(ctx context.Context, req ctrl.Request) (_
 		return reconcile.Result{}, errors.Wrapf(err, "failed to get Machine for VSphereMachine")
 	}
 	if machine == nil {
+		// Note: If ownerRef was not set, there is nothing to delete. Remove finalizer so deletion can succeed.
+		if !machineContext.GetVSphereMachine().GetDeletionTimestamp().IsZero() {
+			if ctrlutil.ContainsFinalizer(machineContext.GetVSphereMachine(), infrav1.MachineFinalizer) {
+				patchHelper, err := patch.NewHelper(machineContext.GetVSphereMachine(), r.Client)
+				if err != nil {
+					return reconcile.Result{}, err
+				}
+				ctrlutil.RemoveFinalizer(machineContext.GetVSphereMachine(), infrav1.MachineFinalizer)
+				if err := patchHelper.Patch(ctx, machineContext.GetVSphereMachine()); err != nil {
+					return ctrl.Result{}, err
+				}
+			}
+			return ctrl.Result{}, nil
+		}
+
 		log.Info("Waiting for Machine controller to set OwnerRef on VSphereMachine")
 		return reconcile.Result{}, nil
 	}

controllers/vspheremachine_controller_test.go

@@ -22,6 +22,7 @@ import (
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
 	corev1 "k8s.io/api/core/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/utils/ptr"
 	clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1"
@@ -347,4 +348,42 @@ func Test_machineReconciler_Metadata(t *testing.T) {
 				!capiutil.HasOwner(vSphereMachine.GetOwnerReferences(), infrav1.GroupVersion.String(), []string{"VSphereCluster"})
 		}, timeout).Should(BeTrue())
 	})
+
+	t.Run("Should complete deletion even without Machine owner", func(t *testing.T) {
+		g := NewWithT(t)
+
+		vSphereMachine := &infrav1.VSphereMachine{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "vsphere-machine-no-ownerrefs",
+				Namespace: ns.Name,
+				// no ownerRefs
+			},
+			Spec: infrav1.VSphereMachineSpec{
+				VirtualMachineCloneSpec: infrav1.VirtualMachineCloneSpec{
+					Template: "ubuntu-k9s-1.19",
+					Network: infrav1.NetworkSpec{
+						Devices: []infrav1.NetworkDeviceSpec{
+							{NetworkName: "network-1", DHCP4: true},
+						},
+					},
+				},
+			},
+		}
+
+		g.Expect(testEnv.Create(ctx, vSphereMachine)).To(Succeed())
+
+		// Make sure the VSphereMachine has the finalizer.
+		g.Eventually(func(g Gomega) {
+			g.Expect(testEnv.Get(ctx, client.ObjectKeyFromObject(vSphereMachine), vSphereMachine)).To(Succeed())
+			g.Expect(ctrlutil.ContainsFinalizer(vSphereMachine, infrav1.MachineFinalizer)).To(BeTrue())
+		}, timeout).Should(Succeed())
+
+		g.Expect(testEnv.Delete(ctx, vSphereMachine)).To(Succeed())
+
+		// Make sure the VSphereMachine is gone.
+		g.Eventually(func(g Gomega) {
+			err := testEnv.Get(ctx, client.ObjectKeyFromObject(vSphereMachine), vSphereMachine)
+			g.Expect(apierrors.IsNotFound(err)).To(BeTrue())
+		}, timeout).Should(Succeed())
+	})
 }