双主复制:
1)、在两台服务器上各自建立一个具有复制权限的用户;
2)、修改配置文件:
# 主服务器A上
[mysqld]
server-id = 10
log-bin = mysql-bin
relay-log = relay-mysql
auto-increment-offset = 1 # 起始值
auto-increment-increment = 2 # 步长
# 主服务器B上
[mysqld]
server-id = 20
log-bin = mysql-bin
relay-log = relay-mysql
auto-increment-increment = 2
auto-increment-offset = 2
3)、如果此时两台服务器均为新建立,且无其它写入操作,各服务器只需记录当前自己二进制日志文件及事件位置,以之作为另外的服务器复制起始位置即可
serverA|mysql> SHOW MASTER STATUS\G
************************** 1. row ***************************
File: mysql-bin.000001
Position: 710
Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
server2|mysql> SHOW MASTER STATUS\G
mysql> SHOW MASTER STATUS\G
*************************** 1. row ***************************
File: mysql-bin.000002
Position: 810
Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
4)各服务器接下来指定对另一台服务器为自己的主服务器:
serverA|mysql> CHANGE MASTER TO MASTER TO MASTER_HOST=‘10.10.10.72‘,MASTER_USER=‘replpuser‘, MASTER_PASSWORD=‘replpass‘, MASTER_LOG_FILE=‘mysql-bin.000002‘, MASTER_LOG_POS=810
serverB|mysql> CHANGE MASTER TO MASTER TO MASTER_HOST=‘10.10.10.71‘,MASTER_USER=‘replpuser‘, MASTER_PASSWORD=‘replpass‘, MASTER_LOG_FILE=‘mysql-bin.000001‘, MASTER_LOG_POS=710