diff --git a/roles/db/templates/conf/z99-local.cnf b/roles/db/templates/conf/z99-local.cnf
index a434496..ad99d65 100644
--- a/roles/db/templates/conf/z99-local.cnf
+++ b/roles/db/templates/conf/z99-local.cnf
@@ -1,6 +1,7 @@
 [mysqld]
 
 server-id                                   = {{ serverid }}
+#read_only                                  = ON
 #bind-address                               = 127.0.0.1
 #event-scheduler                            = OFF
 #skip-log-bin