From 0949e08336b2225e8826c34d9a455a17eabdec3c Mon Sep 17 00:00:00 2001
From: AdoHe <coolhzb@163.com>
Date: Tue, 26 Jul 2016 02:37:55 -0400
Subject: [PATCH] fix kubectl rolling update empty file cause panic issue

---
 pkg/kubectl/cmd/rollingupdate.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/kubectl/cmd/rollingupdate.go b/pkg/kubectl/cmd/rollingupdate.go
index 1f2eb032460..5cede1a00bf 100644
--- a/pkg/kubectl/cmd/rollingupdate.go
+++ b/pkg/kubectl/cmd/rollingupdate.go
@@ -220,6 +220,9 @@ func RunRollingUpdate(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, arg
 			if len(list.Items) > 1 {
 				return cmdutil.UsageError(cmd, "%s specifies multiple items", filename)
 			}
+			if len(list.Items) == 0 {
+				return cmdutil.UsageError(cmd, "please make sure %s exists and is not empty", filename)
+			}
 			obj = list.Items[0]
 		}
 		newRc, ok = obj.(*api.ReplicationController)