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