diff --git a/metadata/service/master/cluster.yml b/metadata/service/master/cluster.yml
index 2cb4f36..38c23c4 100644
--- a/metadata/service/master/cluster.yml
+++ b/metadata/service/master/cluster.yml
@@ -10,6 +10,10 @@
     galera_server_admin_user: root
     galera_max_connections: 20000
     galera_innodb_buffer_pool_size: 3138M
+    galera_innodb_read_io_threads: 0
+    galera_innodb_write_io_threads: 0
+    galera_wsrep_slave_threads: 0
+    galera_xtrabackup_parallel: 0
     galera_error_log_enabled: true
     galera_error_log_path: /var/log/mysql/error.log
   galera:
@@ -32,6 +36,10 @@
         port: 4567
       max_connections: ${_param:galera_max_connections}
       innodb_buffer_pool_size: ${_param:galera_innodb_buffer_pool_size}
+      innodb_read_io_threads: ${_param:galera_innodb_read_io_threads}
+      innodb_write_io_threads: ${_param:galera_innodb_write_io_threads}
+      wsrep_slave_threads: ${_param:galera_wsrep_slave_threads}
+      xtrabackup_parallel: ${_param:galera_xtrabackup_parallel}
       error_log_enabled: ${_param:galera_error_log_enabled}
       error_log_path: ${_param:galera_error_log_path}
   mysql: