diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index f17cfe9..9357c7c 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -6,6 +6,7 @@
   _param:
     openstack_log_appender: false
     openstack_fluentd_handler_enabled: false
+    openstack_ossyslog_handler_enabled: false
     keystone_service_protocol: http
   keystone:
     server:
@@ -44,6 +45,8 @@
             enabled: true
           fluentd:
             enabled: ${_param:openstack_fluentd_handler_enabled}
+          ossyslog:
+            enabled: ${_param:openstack_ossyslog_handler_enabled}
       message_queue:
         engine: rabbitmq
         host: ${_param:single_address}