doctrine:
    dbal:
        dbname: mysql_db
        user: mysql_user
        password: mysql_s3cr3t
        unix_socket: /path/to/mysqld.sock
        slaves:
            slave1:
                user: slave_user
                dbname: slave_db
                password: slave_s3cr3t
                unix_socket: /path/to/mysqld_slave.sock