🌱 Fix error handling when the resource is not found

bootstrap/kubeadm/internal/controllers/kubeadmconfig_controller.go

@@ -157,11 +157,11 @@ func (r *KubeadmConfigReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 
 	// Look up the owner of this kubeadm config if there is one
 	configOwner, err := bsutil.GetTypedConfigOwner(ctx, r.Client, config)
-	if apierrors.IsNotFound(err) {
-		// Could not find the owner yet, this is not an error and will rereconcile when the owner gets set.
-		return ctrl.Result{}, nil
-	}
 	if err != nil {
+		if apierrors.IsNotFound(err) {
+			// Could not find the owner yet, this is not an error and will rereconcile when the owner gets set.
+			return ctrl.Result{}, nil
+		}
 		return ctrl.Result{}, errors.Wrapf(err, "failed to get owner")
 	}
 	if configOwner == nil {

controlplane/kubeadm/internal/controllers/controller.go

@@ -145,19 +145,21 @@ func (r *KubeadmControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.
 		if apierrors.IsNotFound(err) {
 			return ctrl.Result{}, nil
 		}
-		return ctrl.Result{Requeue: true}, nil
+		return ctrl.Result{}, err
 	}
 
 	// Fetch the Cluster.
 	cluster, err := util.GetOwnerCluster(ctx, r.Client, kcp.ObjectMeta)
 	if err != nil {
-		log.Error(err, "Failed to retrieve owner Cluster from the API Server")
-		return ctrl.Result{}, err
+		// It should be an issue to be investigated if the controller get the NotFound status.
+		// So, it should return the error.
+		return ctrl.Result{}, errors.Wrapf(err, "failed to retrieve owner Cluster")
 	}
 	if cluster == nil {
 		log.Info("Cluster Controller has not yet set OwnerRef")
 		return ctrl.Result{}, nil
 	}
+
 	log = log.WithValues("Cluster", klog.KObj(cluster))
 	ctx = ctrl.LoggerInto(ctx, log)
 

internal/controllers/machinehealthcheck/machinehealthcheck_controller.go

@@ -126,7 +126,6 @@ func (r *Reconciler) Reconcile(ctx context.Context, req ctrl.Request) (_ ctrl.Re
 		}
 
 		// Error reading the object - requeue the request.
-		log.Error(err, "Failed to fetch MachineHealthCheck")
 		return ctrl.Result{}, err
 	}