Merge "Allow disabling etcd3"
diff --git a/stack.sh b/stack.sh
index ecf068a..a63f6b9 100755
--- a/stack.sh
+++ b/stack.sh
@@ -1048,7 +1048,9 @@
 # -----
 
 # etcd is a distributed key value store that provides a reliable way to store data across a cluster of machines
-start_etcd3
+if is_service_enabled etcd3; then
+    start_etcd3
+fi
 
 # Keystone
 # --------