diff --git a/devstack/settings b/devstack/settings
index 94d5f1508..c3eaa1577 100644
--- a/devstack/settings
+++ b/devstack/settings
@@ -15,6 +15,9 @@
 # PHYSICAL_NETWORK=public
 # OVS_PHYSICAL_BRIDGE=br-ex
 
+# Configure Docker cluster store
+DOCKER_CLUSTER_STORE=${DOCKER_CLUSTER_STORE:-etcd://$HOST_IP:$ETCD_PORT}
+
 # Enable Zun services
 if [[ ${HOST_IP} == ${SERVICE_HOST} ]]; then
     enable_service zun-api