diff --git a/roles/docker-registry-client/defaults/main.yml b/roles/docker-registry-client/defaults/main.yml
new file mode 100644
index 0000000..83f7950
--- /dev/null
+++ b/roles/docker-registry-client/defaults/main.yml
@@ -0,0 +1,27 @@
+---
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# docker-registry-client/defaults/main.yml
+
+pki_dir: "{{ playbook_dir }}/pki"
+
+# site name
+site_name: placeholder-sitename
+site_suffix: "{{ site_name }}.test"
+
+# docker registry
+docker_registry_ext_port: "5000"
+docker_registry: "docker-registry.{{ site_suffix }}:{{ docker_registry_ext_port }}"
+