环境:centos6.2,mysql5.5.25
master:192.168.131.5
slave:192.168.131.6
master配置文件,具体含义查看mysql5.5手册。
server-id=1 log-bin=/var/log/mysql-binlog/bin binlog-do-db=test binlog-ignore-db=mysql
创建同步用的用户并赋予replication slave权限
create user 'rep'@'192.168.%' identified by 'test'; grant replication slave on *.* to 'rep'@'192.168.%'; flush privileges;
重启mysql使配置生效
mysql> show master status; +------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------+----------+--------------+------------------+ | bin.000001 | 107 | test | mysql | +------------+----------+--------------+------------------+
slave配置
mysql5.1.7版本以后已经不支持把master配置属性写入my.ini文件中了,只需把同步的数据库和需要忽略的数据库写入
server-id=2 replicate-do-db=test replicate-ignore-db=mysql
重启mysql使配置生效
用change master语句指定同步位置
stop slave; change master to master_host='192.168.131.5', master_user='rep', master_password='test', master_log_file='bin.000001', master_log_pos=107; start slave;
master_log_file和master_log_pos可以在master上用show master status查看,一般来说应该是先锁表(flush tables with read lock),导数据到slave上,用change master指定同步位置,master上unlock tables。
mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.131.5 Master_User: rep Master_Port: 3306 Connect_Retry: 60 Master_Log_File: bin.000001 Read_Master_Log_Pos: 485 Relay_Log_File: mysqld-relay-bin.000002 Relay_Log_Pos: 625 Relay_Master_Log_File: bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: test Replicate_Ignore_DB: mysql 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: 485 Relay_Log_Space: 782 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: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 1 row in set (0.00 sec)
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
说明没问题,如果有错根据Last_IO_Error和Last_SQL_Error提示排查即可。