MySQL Multi-Master Single-Slave Replication

MySQL 5.7以前只能实现一主一从、一主多从或者多主多从的复制的功能，从这个版本开始MySQL 引入多源复制（多主一从），她可以把多个主服务器的数据同步到一个从服务器进行数据/数据库的备份，还可以实现后期的一些数据统计功能等，还是比较使用的。

Reference

https://dev.mysql.com/doc/refman/5.7/en/replication-multi-source.html

http://www.fromdual.com/sites/default/files/mm-single-slave-repl.pdf

http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.failover.html#ha_mysql
https://dev.mysql.com/doc/refman/5.7/en/change-master-to.html

https://dev.mysql.com/worklog/task/?id=1697

https://www.percona.com/blog/2013/10/02/mysql-5-7-multi-source-replication/

https://dev.mysql.com/doc/refman/5.7/en/slave-logs.html
https://mariadb.com/kb/en/library/multi-source-replication/
http://www.shinguz.ch
http://insidemysql.com/
http://mysqlhighavailability.com/
http://mysqlserverteam.com/
https://www.fromdual.com/tools