在31服务器上建立授权用户！
mysql> grant replication slave on *.* to 'rep'@'%' identified by "rep"; Query OK, 0 rows affected (0.09 sec) mysql> flush privileges; Query OK, 0 rows affected (0.09 sec) mysql> show master status; +---------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +---------------+----------+--------------+------------------+ | binlog.000004 | 138637 | | | +---------------+----------+--------------+------------------+ 1 row in set (0.03 sec) 在32服务器上把31服务器设为自己的主服务器，mysql客户端连接到32服务器： mysql> change master to master_host='192.168.8.31',master_user='rep',master_password='rep',master_log_file='binlog.000004',master_log_pos=138637; Query OK, 0 rows affected (0.01 sec) mysql> start slave; Query OK, 0 rows affected (0.00 sec) mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.8.31 Master_User: rep Master_Port: 3306 Connect_Retry: 60 Master_Log_File: binlog.000004 Read_Master_Log_Pos: 138637 Relay_Log_File: relaylog.000002 Relay_Log_Pos: 250 Relay_Master_Log_File: binlog.000004 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: mysql,test,information_schema 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: 138637 Relay_Log_Space: 399 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)PS:
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
两处都为YES，表示OK！
3.将32服务器设置31的主服务器
在32服务器上建立授权用户：