mysql 同步

http://dev.mysql.com/doc/refman/5.5/en/replication-howto.html

http://blog.csdn.net/mycwq/article/details/17136001

http://stackoverflow.com/questions/7707859/mysql-database-sync-between-two-databases

https://dev.mysql.com/doc/refman/5.0/en/change-master-to.html