diff --git a/packaging/tools/post.sh b/packaging/tools/post.sh
index d91daaa5c44488e34dea7ec2ddec0863699446f2..569f316ff3d3edf0af49d9e132044a348b0a6394 100755
--- a/packaging/tools/post.sh
+++ b/packaging/tools/post.sh
@@ -121,8 +121,11 @@ function install_config() {
     echo -e -n "${GREEN}Enter FQDN:port (like h1.taosdata.com:6030) of an existing TDengine cluster node to join${NC}"
     echo
     echo -e -n "${GREEN}OR leave it blank to build one${NC}:"
-    read firstEp
-    while true; do
+    #read firstEp
+    if exec < /dev/tty; then
+    	read firstEp;
+	fi
+	while true; do
         if [ ! -z "$firstEp" ]; then
             # check the format of the firstEp
             #if [[ $firstEp == $FQDN_PATTERN ]]; then