Test fixes

api/v1beta1/azuremanagedcontrolplane_webhook.go

@@ -216,14 +216,6 @@ func (mw *azureManagedControlPlaneWebhook) ValidateUpdate(ctx context.Context, o
 		allErrs = append(allErrs, err)
 	}
 
-	if err := webhookutils.ValidateImmutable(
-		field.NewPath("Spec", "FleetsMember.Name"),
-		m.Spec.FleetsMember.Name,
-		old.Spec.FleetsMember.Name,
-	); err != nil {
-		allErrs = append(allErrs, err)
-	}
-
 	// Consider removing this once moves out of preview
 	// Updating outboundType after cluster creation (PREVIEW)
 	// https://learn.microsoft.com/en-us/azure/aks/egress-outboundtype#updating-outboundtype-after-cluster-creation-preview
@@ -258,6 +250,10 @@ func (mw *azureManagedControlPlaneWebhook) ValidateUpdate(ctx context.Context, o
 		allErrs = append(allErrs, errs...)
 	}
 
+	if errs := m.validateFleetsMember(old); len(errs) > 0 {
+		allErrs = append(allErrs, errs...)
+	}
+
 	if len(allErrs) == 0 {
 		return nil, m.Validate(mw.Client)
 	}
@@ -685,6 +681,24 @@ func (m *AzureManagedControlPlane) validateOIDCIssuerProfileUpdate(old *AzureMan
 	return allErrs
 }
 
+// validateFleetsMember validates a FleetsMember.
+func (m *AzureManagedControlPlane) validateFleetsMember(old *AzureManagedControlPlane) field.ErrorList {
+	var allErrs field.ErrorList
+
+	if old.Spec.FleetsMember != nil && m.Spec.FleetsMember != nil {
+		if old.Spec.FleetsMember.Name != m.Spec.FleetsMember.Name {
+			allErrs = append(allErrs,
+				field.Forbidden(
+					field.NewPath("Spec", "FleetsMember", "Name"),
+					"Name is immutable",
+				),
+			)
+		}
+	}
+
+	return allErrs
+}
+
 func validateName(name string, fldPath *field.Path) field.ErrorList {
 	var allErrs field.ErrorList
 	if lName := strings.ToLower(name); strings.Contains(lName, "microsoft") ||

test/e2e/aks_fleets_member.go

@@ -83,11 +83,10 @@ func AKSFleetsMemberSpec(ctx context.Context, inputGetter func() AKSFleetsMember
 		Location: ptr.To(os.Getenv(AzureLocation)),
 	}, nil)
 	Expect(err).To(BeNil())
-
-	Eventually(func(g Gomega) {
-		_, err := poller.PollUntilDone(ctx, nil)
-		Expect(err).NotTo(HaveOccurred())
-	}, input.WaitIntervals...).Should(Succeed(), "failed to create fleet manager")
+	res, err := poller.PollUntilDone(ctx, nil)
+	Expect(err).To(BeNil())
+	Logf("Fleet manager created: %v", res.Fleet.Name)
+	Logf("Fleet manager arm id: %v", *res.Fleet.ID)
 
 	By("Joining the cluster to the fleet hub")
 	var infraControlPlane = &infrav1.AzureManagedControlPlane{}