
Galera has a copule of options to sync mariadb cluster. Default value is mysqldump which is slow, except for small data-sets, but is the most tested option. rsync option is much faster than mysqldump on large data-sets. So add --wsrep_sst_method value. Change-Id: Ide03801b2472fa3d4f76bbe32e75bf6e618ac7e1