syncer: Set the health label to no when the node is deleted. radondb#310

mysqlcluster/syncer/statefulset.go

@@ -466,6 +466,10 @@ func (s *StatefulSetSyncer) applyNWait(ctx context.Context, pod *corev1.Pod) err
 		log.Info("pod is already updated", "pod name", pod.Name)
 	} else {
 		s.Status.State = apiv1alpha1.ClusterUpdateState
+		pod.ObjectMeta.Labels["healthy"] = "no"
+		if err:= s.cli.Update(ctx, pod); err!= nil {
+			return err
+		}
 		log.Info("updating pod", "pod", pod.Name, "key", s.Unwrap())
 		if pod.DeletionTimestamp != nil {
 			log.Info("pod is being deleted", "pod", pod.Name, "key", s.Unwrap())