diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index 2cf8bfe..ace7f3b 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -18,6 +18,8 @@
       bind:
         api:
           address: ${_param:single_address}
+      concurrency:
+        lock_path: '/var/lib/designate'
       database:
         engine: mysql
         host: ${_param:single_address}