diff --git a/install/chef.sh b/install/chef.sh
index 5bbfba89..91582f83 100755
--- a/install/chef.sh
+++ b/install/chef.sh
@@ -89,7 +89,10 @@ if [[ "$?" != "0" ]]; then
 else
     echo "cookbooks are added to chef server"
 fi
-
+# disable compass-rally when in regtest
+if $REGTEST; then
+    sed -i '/compass-rally/d' /var/roles/os-identity.json
+fi
 knife role from file /var/chef/roles/*.json
 if [[ "$?" != "0" ]]; then
     echo "failed to add roles"
diff --git a/install/install.conf b/install/install.conf
index 1e022c85..c0c48be0 100755
--- a/install/install.conf
+++ b/install/install.conf
@@ -1,7 +1,7 @@
 #####################################
 # Config File for Compass Installer #
 #####################################
-
+export REGTEST="False"
 # OS_INSTALLER indicates the tool for OS provisioning, default is 'cobbler'.
 export OS_INSTALLER=${OS_INSTALLER:-cobbler}
 
diff --git a/install/install.conf.template b/install/install.conf.template
index 9344c0dd..df3c9d14 100755
--- a/install/install.conf.template
+++ b/install/install.conf.template
@@ -1,6 +1,8 @@
 #####################################
 # Config File for Compass Installer #
 #####################################
+# flag for regtest
+export REGTEST="True"
 # REPO_URL indicates the source where to download compass-web and compass-adapters from
 #export REPO_URL=https://review.openstack.org