diff --git a/packaging/tools/post.sh b/packaging/tools/post.sh
index 726eda69d03b2e3f8da423a8cf66f259a98f1a05..d91daaa5c44488e34dea7ec2ddec0863699446f2 100755
--- a/packaging/tools/post.sh
+++ b/packaging/tools/post.sh
@@ -10,6 +10,7 @@ data_dir="/var/lib/taos"
 log_dir="/var/log/taos"
 data_link_dir="/usr/local/taos/data"
 log_link_dir="/usr/local/taos/log"
+install_main_dir="/usr/local/taos"
 
 # static directory
 cfg_dir="/usr/local/taos/cfg"