拥有两台或以上的mysql服务器,一台为主服务器一台为从服务器
服务器参数:
主服务器(master):192.168.1.2 端口:3306 从服务器(slave) : 192.168.1.3 端口:3306
#vim /etc/my.cnf [mysqld] log-bin=mysql-bin //[必须]启用二进制日志 server-id=2 //[必须]服务器唯一ID,默认是1,一般取IP最后一段
#vi /etc/my.cnf [mysqld] log-bin=mysql-bin //[不是必须]启用二进制日志 server-id=3 //[必须]服务器唯一ID,默认是1,一般取IP最后一段
/etc/init.d/mysql restart
#登录mysql mysql -uroot -p123456 #创建新用户 create user 'test'@'%' identified by '123456'; #主从复制的权限: grant replication slave on *.* to 'test'@'%' identified by '123456'; #(@后面的ip地址为允许连接的客户端的ip地址,如果改为 '%',就表示客户端没有ip地址的限制)
mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000002 | 1234 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec) #执行完此步骤后不要再操作主服务器MYSQL,防止主服务器状态值变化
#配置同步信息 mysql> change master to master_host='192.168.1.2',master_user='test',master_password='123456', master_log_file='mysql-bin.000002',master_log_pos=1234; #//启动从服务器复制功能 mysql> start slave;
mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 47.242.12.66 Master_User: test Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000002 Read_Master_Log_Pos: 967 Relay_Log_File: DESKTOP-82QLLRC-relay-bin.000002 Relay_Log_Pos: 1133 Relay_Master_Log_File: mysql-bin.000002 Slave_IO_Running: Yes #必须为YES否则有错误 Slave_SQL_Running: Yes #必须为YES否则有错误 Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates 1 row in set (0.00 sec)
#主服务器 mysql> use demo; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +----------------+ | Tables_in_demo | +----------------+ | t_user | +----------------+ 1 row in set (0.00 sec) mysql> create table test(id int(3),name char(10)); Query OK, 0 rows affected (0.01 sec) mysql> insert into test values(001,'小明'); Query OK, 1 row affected (0.00 sec) #从服务器 mysql> use demo; Database changed mysql> show tables; +----------------+ | Tables_in_demo | +----------------+ | t_user | | test | +----------------+ 2 rows in set (0.00 sec) mysql> select * from test; +------+--------+ | id | name | +------+--------+ | 1 | 小明 | +------+--------+ 1 row in set (0.00 sec)