本地MySQL环境，是两台MySQL做M-M复制。今天发现错误信息：
mysql 5.5.28-log> show slave statusG
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 88.88.88.88
Master_User: replicate
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: testdbbinlog.000005
Read_Master_Log_Pos: 98359687
Relay_Log_File: mysql-relay-bin.000020
Relay_Log_Pos: 4
Relay_Master_Log_File: testdbbinlog.000005
Slave_IO_Running: No
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: 98359687
Relay_Log_Space: 107
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
1 row in set (0.00 sec)
mysql 5.5.28-log>
参考网上文档： http://blog.csdn.net/billfanggs/article/details/8905991
在source那边，执行：
flush logs;
show master status;
记下File, Position。
在target端，执行：
CHANGE MASTER TO MASTER_LOG_FILE='testdbbinlog.000008',MASTER_LOG_POS=107;
slave start;
show slave status G
一切正常。
转自http://blog.csdn.net/edwzhang/article/details/17226975