diff --git a/etc/kayobe/kolla.yml b/etc/kayobe/kolla.yml
index 90c0f91..c3a73d0 100644
--- a/etc/kayobe/kolla.yml
+++ b/etc/kayobe/kolla.yml
@@ -33,9 +33,25 @@
 # Kolla installation type: binary or source.
 #kolla_install_type:
 
+# Docker namespace to use for Kolla images.
+#kolla_docker_namespace:
+
 # Kolla OpenStack release version. This should be a Docker image tag.
 #kolla_openstack_release:
 
+# Dict mapping names of sources to their definitions for
+# kolla_install_type=source. See kolla.common.config for details.
+# Example:
+# kolla_sources:
+#   ironic_base:
+#     type: git
+#     location: https://github.com/openstack/ironic
+#     reference: master
+#kolla_sources:
+
+###############################################################################
+# Kolla-ansible configuration.
+
 # Whether TLS is enabled for the external API endpoints.
 #kolla_enable_tls_external: