+#
+# tags: (list) list of tags used by other parts of the deployment process to
+# find the role for a specific type of functionality. Currently a role
+# with both 'primary' and 'controller' is used as the primary role for the
+# deployment process. If no roles have have 'primary' and 'controller', the
+# first role in this file is used as the primary role.
+#
+- name: Controller