1. stop mysql-server if running
/usr/local/etc/rc.d/mysql-server stop
2. update /etc/my.cfg with adding new config
default-storage_engine = InnoDB
and uncomment next lines
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/db/mysql/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/db/mysql/
# You can set .._buffer_pool_size up to 50 – 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
3. start mysql-server again
/usr/local/etc/rc.d/mysql-server start
4. check engine property, after logged into mysql>
show variables like “%engine%”;
done