!include include/default_my.cnf [mysqld.1] log-bin server-id=1 [mysqld.2] log-bin server-id=2 [mysqld.3] server-id=3 loose-innodb [ENV] SERVER_MYPORT_1= @mysqld.1.port SERVER_MYPORT_2= @mysqld.2.port SERVER_MYPORT_3= @mysqld.3.port