diff --git a/ceilometer/server/cluster.yml b/ceilometer/server/cluster.yml
index 0704a2b..485eda2 100644
--- a/ceilometer/server/cluster.yml
+++ b/ceilometer/server/cluster.yml
@@ -29,7 +29,7 @@
         host: ${_param:openstack_control_address}
         port: 35357
         tenant: service
-        user: ceilometer
+        user: ${_param:keystone_ceilometer_username}
         password: ${_param:keystone_ceilometer_password}
         region: ${_param:openstack_region}
         protocol: ${_param:cluster_internal_protocol}