环境
| Master1/Master2 | 系统 | IP | 数据库版本 |
| Master1 | CentOS6.7 | 10.10.3.211 | mariadb-10.1.19 |
| Master2 | CentOS6.7 | 10.10.3.212 | mariadb-10.1.19 |
一、Master1的配置
（1）修改Master1配置文件/etc/my.cnf，修改如下：
log-bin = /usr/local/mysqllogs/binlogs/master1-bin #启用二进制日志
relay-log = /usr/local/mysqllogs/relaylogs/relay-bin #启用中继日志
auto-increment-offset = 1 #自增起始值
auto-increment-increment = 2 #自增步长
server-id = 1
重启数据库服务
（2）创建有复制权限的用户，命令如下
CREATE USER 'luccy'@'10.10.3.212' IDENTIFIED BY '';
REVOKE ALL PRIVILEGES ,GRANT OPTION FROM 'luccy'@'10.10.3.212';
GRANT RELOAD,LOCK TABLES, REPLICATION CLIENT ,REPLICATION SLAVE ON *.* TO 'luccy'@'10.10.3.212';
FLUSH PRIVILEGES;
二、Master2的配置
（1）修改Master1配置文件/etc/my.cnf，修改如下：
log-bin = /usr/local/mysqllogs/binlogs/master2-bin
relay-log = /usr/local/mysqllogs/relaylogs/relay-bin
auto-increment-offset = 2
auto-increment-increment = 2
server-id = 2
重启数据库服务
（2）创建有复制权限的用户，命令如下
CREATE USER 'jerry'@'10.10.3.211' IDENTIFIED BY '';
REVOKE ALL PRIVILEGES ,GRANT OPTION FROM 'jerry'@'10.10.3.211';
GRANT RELOAD,LOCK TABLES, REPLICATION CLIENT ,REPLICATION SLAVE ON *.* TO 'jerry'@'10.10.3.211';
FLUSH PRIVILEGES;
三、查看Master1和Master2的状态
SHOW MASTER STATUS;
Master1
Master2
四、互相指向
CHANGE MASTER TO MASTER_USER='jerry',MASTER_HOST='10.10.3.212',MASTER_PASSWORD='123456',MASTER_LOG_FILE='master2-bin.000002',MASTER_LOG_POS=;
CHANGE MASTER TO MASTER_USER='luccy',MASTER_HOST='10.10.3.211',MASTER_PASSWORD='123456',MASTER_LOG_FILE='master1-bin.000001',MASTER_LOG_POS=;
五、启动Master1和Master2服务器复制进程
START SLAVE;
Master1
Master2
六、测试