diff --git a/metadata/service/master/cluster.yml b/metadata/service/master/cluster.yml
index 32f559b..4995be5 100644
--- a/metadata/service/master/cluster.yml
+++ b/metadata/service/master/cluster.yml
@@ -19,6 +19,7 @@
         address: ${_param:cluster_local_address}
         insecure_address: 127.0.0.1
         insecure_port: 8080
+        count: 3
       etcd:
         members:
           - host: ${_param:cluster_node01_address}