diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index b01094a..15a718f 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -27,6 +27,7 @@
     # RabbitMQ
     rabbitmq_upgrade_enabled: ${_param:openstack_upgrade_enabled}
     # Galera
+    galera_mysql_version: '5.6'
     galera_upgrade_enabled: ${_param:openstack_upgrade_enabled}
     # Openstack memcache
     openstack_memcached_server_bind_address: 0.0.0.0
diff --git a/galera/server/cluster.yml b/galera/server/cluster.yml
index 2dd5962..a5aa455 100644
--- a/galera/server/cluster.yml
+++ b/galera/server/cluster.yml
@@ -4,3 +4,7 @@
 - system.keepalived.cluster.instance.galera_vip
 - system.galera.upgrade
 - system.galera.server.clustercheck
+parameters:
+  galera:
+    version:
+      mysql: ${_param:galera_mysql_version}