deal error for clientset.NewForConfig

cmd/kubelet/app/server.go

@@ -369,6 +369,9 @@ func run(s *options.KubeletServer, kubeDeps *kubelet.KubeletDeps) (err error) {
 		clientConfig, err := CreateAPIServerClientConfig(s)
 		if err == nil {
 			kubeClient, err = clientset.NewForConfig(clientConfig)
+			if err != nil {
+				glog.Warningf("New kubeClient from clientConfig error: %v", err)
+			}
 			// make a separate client for events
 			eventClientConfig := *clientConfig
 			eventClientConfig.QPS = float32(s.EventRecordQPS)