diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index 939856c..448d6fe 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -50,6 +50,8 @@
             enabled: ${_param:openstack_fluentd_handler_enabled}
           ossyslog:
             enabled: ${_param:openstack_ossyslog_handler_enabled}
+      concurrency:
+        lock_path: /var/lock/neutron
       message_queue:
         engine: rabbitmq
         host: ${_param:single_address}