MYSQL 双主搭建

Posted 2021-11-21

参考 mysql搭建安装完mysql后

https://blog.51cto.com/popli3/2357211

服务器A	服务器B
192.168.0.104	192.168.0.105

在服务器A（192.168.0.104)上：

1. 打开log-bin和server-id=1选项

   [[email protected] ~]# vi /etc/my.cnf
   log-bin
   server-id=1

2. 授权账户并重启

   mysql> grant super,reload,replication slave on *.* to [email protected] identified by ‘slave‘;
   mysql> flush privileges;
   mysql>quit
   [[email protected] ~]# service mysqld restart

在服务器B（192.168.0.105)上：

1. 打开server-id=2和log-bin

   [[email protected] ~]# vi /etc/my.cnf
   log-bin
   server-id=2

2. 开启change master 功能，这边的host是你主的地址，user和pass都是上一步grant设置的

   mysql>change master to master_host=‘192.168.0.104‘,master_user=‘slave‘,master_password=‘slave‘;
   mysql> start slave;

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至此单向的主从完毕，接下来是反过来操作一遍

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在服务器B（192.168.0.105)上：

mysql> grant super,reload,replication slave on *.* to [email protected] identified by ‘slave‘;

mysql> flush privileges;

在服务器A（192.168.0.104)上：

mysql>change master to master_host=‘192.168.0.105‘,master_user=‘slave‘,master_password=‘slave‘;
mysql> start slave;