From e1af0c5fb150ecabc82acf08fe3af85d89af4344 Mon Sep 17 00:00:00 2001
From: Wei Huang <wei.huang1@ibm.com>
Date: Fri, 12 Oct 2018 17:54:20 -0700
Subject: [PATCH] fix issue that e2e script exits due to unbound variables

---
 cluster/skeleton/util.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cluster/skeleton/util.sh b/cluster/skeleton/util.sh
index 1cd9800ab1..d43d57a7a4 100644
--- a/cluster/skeleton/util.sh
+++ b/cluster/skeleton/util.sh
@@ -19,8 +19,8 @@
 
 # Must ensure that the following ENV vars are set
 function detect-master {
-	echo "KUBE_MASTER_IP: $KUBE_MASTER_IP" 1>&2
-	echo "KUBE_MASTER: $KUBE_MASTER" 1>&2
+	echo "KUBE_MASTER_IP: ${KUBE_MASTER_IP:-}" 1>&2
+	echo "KUBE_MASTER: ${KUBE_MASTER:-}" 1>&2
 }
 
 # Get node names if they are not static.