diff --git a/nova/files/queens/nova-controller.conf.Debian b/nova/files/queens/nova-controller.conf.Debian
index b4d3ace..7061552 100644
--- a/nova/files/queens/nova-controller.conf.Debian
+++ b/nova/files/queens/nova-controller.conf.Debian
@@ -4444,6 +4444,7 @@
 {%- endif %}
 
 {%- set _data = controller.get('cinder', controller.get('identity', {})) %}
+{%- if 'cacert_file' not in _data.keys() %}{% do _data.update({'cacert_file': controller.cacert_file}) %}{% endif %}
 {%- set auth_type = _data.get('auth_type', 'password') %}
 {%- include "oslo_templates/files/queens/keystoneauth/_type_" + auth_type + ".conf" %}