Master-Master(双主)
1、测试环境
Master/Slave Master1/Slave1
IP 192.168.1.13 192.168.1.10
为了保持干净的环境：两边服务器
rm -rf /var/lib/mysql/*
service mysqld restart
IP:192.168.1.13
IP:192.168.1.10
2、主服务器授权
分别在Master/Slave和Master1/Slave1上创建一个用户并授予相应权限。
mysql> grant replication slave on *.* to repli@'192.168.1.13′ identified by '123′;
mysql> grant replication slave on *.* to srepli@'192.168.41.189′ identified by '123′;
然后退出mysql控制台，停止mysql服务：
mysql> \q
3、配置Mysql主配置文件/etc/my.cnf
在/etc/my.cnf配置文件[mysqld]模块添加如下参数
Master/Slave(192.168.1.13):
[root@bogon ~]# vim /etc/my.cnf
server-id = 1
log-bin = mysql-bin
master-host = 192.168.1.13
master-user = srepli
master-password = 123
master-port = 3306
replicate-ignore-db = mysql
Master1/Slave1(192.168.1.10):
[root@repli1 ~]# vim /etc/my.cnf
server-id = 2
log-bin = mysql-bin
master-host = 192.168.1.10
master-user = repli
master-password = 123
master-port = 3306
replicate-ignore-db = mysql
4、查看同步状态
service mysqld restart //两边服务器执行
在Master1/Slave1上查看
mysql> show slave status\G
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
在master/Slave上查看：
mysql> show slave status\G
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
注：如果没有先启动的服务器Slave_IO_Running: NO mysql> slave stop; mysql> slave start; mysql> show slave status\G 两边服务器建库，建表，插入语句
