哈,原来手里有一份教程, 每次做同步都照做,一直很顺利。这次很久没做同步了,竟然不会了。折腾了好久,特地做个笔记。 Mysql 同步笔记 1.a为主,b为从. a的ip:10.62.240.128 b的ip:10.62.240.126 a,b 两台机器均装好Mysql,同时确保配置文件中 character_set_server = utf8 collation_server = utf8_unicode_ci 两台机器的设置相同。 2.在主(a)上配置: [/etc/my.cnf]中mysqld域新增: log-bin server-id = 1 sql-bin-update-same binlog-do-db = database_name 3.在从机器中配置: master-host=10.62.240.128 #a的ip master-user=replication master-password=replication master-port=3306 server-id=2 master-connect-retry=60 replicate-do-db=database_name log-slave-updates 4.授权:在a上面进入mysql: GRANT REPLICATION SLAVE ON *.* TO ‘replication‘@’10.62.240.126’ IDENTIFIED BY ‘replication’; flush privileges; 5.锁定a: mysql> use database_name; mysql>FLUSH TABLES WITH READ LOCK; #锁定要同步的test表,然后导出数据结构 mysql>show master status;#记录这里的结果。记录如下: mysqld-bin.000003 | 1399444 | reping | mysqldump database_name > dump.sql mysql> UNLOCK TABLES; #已做好同步数据库结构导出后,解锁这个表 6.在b(从)中载入sql: mysql -uroot < dump.sql 7:在b中对replication位置进行设定: mysql>change master to master_host=’10.62.240.128’, master_port=3306, master_user=’replication’,master_password=’replication’,master_log_file=’mysqld-bin.000003’, MASTER_LOG_POS=1399444; mysql>start slave;#启动复制服务 8:检查主和从之间的同步是否已经跟上: 在a中运行mysql>show master status; mysql> show master status; +——————-+———-+————–+——————+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +——————-+———-+————–+——————+ | mysqld-bin.000003 | 5614301 | reping | 再在从中运行msyql> show slave status; show slave statusG *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 10.62.240.128 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysqld-bin.000003 Read_Master_Log_Pos: 5614301 Relay_Log_File: mysqld-relay-bin.000001 Relay_Log_Pos: 4214905 Relay_Master_Log_File: mysqld-bin.000003 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: 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: 5614301 Relay_Log_Space: 4214905 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 1 row in set (0.01 sec) 注意read_master_log_pos也是5614301,说明复制成功。 以后复制出问题时,也是用这种方式查看和修改。那种查入一条记录然后看从库中是不是也执行了的办法,不可取。