From 62397604a4e6e03cae11e45758f0ae476425e3f6 Mon Sep 17 00:00:00 2001
From: immarvin <yangsbj@cn.ibm.com>
Date: Wed, 3 Aug 2016 02:24:03 -0400
Subject: [PATCH] fix issue  [FVT] updatenode CN without return value for more
 than hours #1621

---
 xCAT/postscripts/remoteshell | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xCAT/postscripts/remoteshell b/xCAT/postscripts/remoteshell
index 0fb111bf7..bf0be9dd0 100755
--- a/xCAT/postscripts/remoteshell
+++ b/xCAT/postscripts/remoteshell
@@ -225,6 +225,9 @@ fi
 rm /tmp/ssh_rsa_hostkey
 
 # if node supports ecdsa host key then download the replacement from the MN/SN
+# remove the /tmp/ecdsa_key first, otherwise the "ssh-keygen" below might hang
+# at waiting for user confirmation to overwritten the existing file
+rm -rf /tmp/ecdsa_key >/dev/null 2>&1
 if ssh-keygen -t ecdsa -f /tmp/ecdsa_key -P "" &>/dev/null ; then
   # download the host ecdsa key
   if [ $useflowcontrol = "1" ]; then