diff --git a/roles/set-src-dest-host/defaults/main.yaml b/roles/set-src-dest-host/defaults/main.yaml
new file mode 100644
index 0000000..fea05c8
--- /dev/null
+++ b/roles/set-src-dest-host/defaults/main.yaml
@@ -0,0 +1 @@
+devstack_base_dir: /opt/stack