diff --git a/ceilometer/server/single.yml b/ceilometer/server/single.yml
index ae642f1..5f56244 100644
--- a/ceilometer/server/single.yml
+++ b/ceilometer/server/single.yml
@@ -15,3 +15,5 @@
           enabled: true
           host: ${_param:stacklight_monitor_address}
           port: 9200
+      identity:
+        protocol: ${_param:cluster_internal_protocol}