diff --git a/ansible/roles/kolla-ansible/defaults/main.yml b/ansible/roles/kolla-ansible/defaults/main.yml
index 246b68cea..6d40e4f4a 100644
--- a/ansible/roles/kolla-ansible/defaults/main.yml
+++ b/ansible/roles/kolla-ansible/defaults/main.yml
@@ -78,6 +78,15 @@ kolla_install_type:
 # Docker namespace to use for Kolla images.
 kolla_docker_namespace:
 
+# Url of docker registry to use for Kolla images.
+kolla_docker_registry:
+
+# Username to use to access a docker registry.
+kolla_docker_registry_username:
+
+# Password to use to access a docker registry.
+kolla_docker_registry_password:
+
 # Valid option is Docker repository tag
 kolla_openstack_release: