lowered buffer values

galera/files/my.cnf

@@ -149,7 +149,7 @@ max_binlog_size         = 100M
 default_storage_engine  = InnoDB
 # you can't just change log file size, requires special procedure
 #innodb_log_file_size   = 50M
-innodb_buffer_pool_size = 12G
+innodb_buffer_pool_size = {{ service.get('innodb_buffer_pool_size', 2G) }}
 innodb_log_buffer_size  = 8M
 innodb_file_per_table   = 1
 innodb_open_files       = 400
@@ -181,7 +181,7 @@ query_cache_size=0
 bind-address={{ service.bind.address }}
 #wsrep_cluster_address=gcomm://
 wsrep_cluster_address=gcomm://{% for member in service.members %}{{ member.host}}{% if not loop.last %},{% endif %}{% endfor %}?pc.wait_prim=no
-wsrep_provider_options="gcache.size=8192M"
+wsrep_provider_options="gcache.size={{ service.get('gcache.size', 2048M) }}"
 #wsrep_provider_options="pc.bootstrap=true"
 # Mandatory settings
 #wsrep_provider=