MySQL主从库配置方法(针对MyISAM数据引擎)
1、主库配置(192.168.1.200)
a、my.cnf中【mysqld】节配置
server-id = 1 //master服务ID，必须唯一*
log-bin = mysql-bin //同步日志文件，必须打开*
b、登录mysql创建同步账户并授予权限：
grant replication slave,reload,super on *.* to myslave@'192.168.1.201' identified by '123456';
2、slave配置(192.168.1.201)
a、my.cnf中【mysqld】节
server-id = 2 //master服务ID，必须唯一*
log-bin = mysql-bin //同步日志文件，必须打开*
master-host = 192.168.1.200 //主库地址*
master-user = myslave //同步的用户名*
master-password = 123456 //同步的密码*
master-port = 3306 //主库端口*
master-connect-retry=60 //同步失败重连时间
replicate-do-db = testslave //执行同步的数据库*
以下配置为可选配置，根据实际需求调整
replicate-ignore-db = mysql //不同步的数据库
replicate-do-table = user //执行同步的表
replicate-ignore-table = city //不同步的表
replicate-wild-do-table = testslave.a% //执行同步的多个表
replicate-wild_ignore-table = mysql.b% //不同步的多个表
3、重新启动主、从库
4、同步数据库
a、登录主库并执行：
mysql>flush tables with read lock;
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000008 | 106 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
//此处需要记录下来同步的开始位置106
再打开一个窗口，将主库的数据文件拷贝到从库中：
scp testslave/* [email protected]:/usr/mysql/var/testslave/
拷贝完成之后，返回前一个窗口解锁数据库只读。
mysql>unlock tables;
b、登录从库mysql：
mysql>flush tables;
mysql>stop slave;
mysql>CHANGE MASTER TO MASTER_HOST='192.168.1.200', MASTER_PORT=3306, MASTER_USER='myslave',
MASTER_PASSWORD='123456',MASTER_LOG_FILE='mysql-bin.000008', MASTER_LOG_POS=106;
mysql>start slave;
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.200
Master_User: myslave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000008
Read_Master_Log_Pos: 106
Relay_Log_File: ccone2-relay-bin.000002
Relay_Log_Pos: 251
Relay_Master_Log_File: mysql-bin.000008
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: ccone
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 106
Relay_Log_Space: 407
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.00 sec)
ERROR:
No query specified
查看Slave_IO_Running: Yes 和Slave_SQL_Running: Yes 2个都为yes则证明主从同步正常，
否则证明同步有问题，可查看日志文件修复。
5、如果做双向同步，则可在此基础上将主从库再反向配置即可实现。