MySQL 1236 错误解决方法
由于主服务器异外重启, 导致从报错, 错误如下:
show slave status错误:
mysql> show slave status\GMaster_Log_File: mysql-bin.000288Read_Master_Log_Pos: 627806304Relay_Log_File: mysql-relay-bin.000990Relay_Log_Pos: 627806457Relay_Master_Log_File: mysql-bin.000288Slave_IO_Running: NoSlave_SQL_Running: YesExec_Master_Log_Pos: 627806304Relay_Log_Space: 627806663
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......Last_IO_Error: Got fatal error 1236 from master when? reading?data from binary log:'Client requested master to start? replication from impossible position'
mysql错误日志:
tail /data/mysql/mysql-error.log111010 17:35:49 [ERROR] Error reading packet from server: Client requested master to start replication from impossible position ( server_errno=1236)111010 17:35:49 [ERROR] Slave I/O: Got fatal error 1236 from master when reading datafrom?binary log: 'Client requested master to start replication from impossibleposition', Error_code: 1236111010 17:35:49 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000288',position 627806304
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[root@db1 ~]# mysqlbinlog /data/mysql/binlog/mysql-bin.000288 > mysql-bin.000288.sqlless mysql-bin.000288.sql看最后一部分# at 627625495#111010 16:35:46 server id 1 end_log_pos 627625631 Query thread_id=45613333exec_time=32758 error_code=0SET TIMESTAMP=1318289746/*!*/;delete from freeshipping_bef_update where part='AR-4006WLM' and code=''/*!*/;# at 627625631#111010 16:35:46 server id 1 end_log_pos 627625751 Query thread_id=45613333exec_time=32758 error_code=0SET TIMESTAMP=1318289746/*!*/;delete from shippingFee_special where part='AR-4006WLM'/*!*/;DELIMITER ;# End of log fileROLLBACK /* added by mysqlbinlog */;/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
找到最接近错误标记627655136的一个position是627625631.
再回到slave机器上change master, 将postion指向这个位置.
mysql> stop slave;Query OK, 0 rows affected (0.00 sec)mysql> change master to master_log_file='mysql-bin.000288',master_log_pos=627625631;Query OK, 0 rows affected (0.06 sec)mysql> start slave;Query OK, 0 rows affected (0.00 sec)
再次查看
mysql> show slave status\G*************************** 1. row ***************************Slave_IO_State: Queueing master event to the relay logMaster_Host: 192.168.21.105Master_User: repMaster_Port: 3306Connect_Retry: 10Master_Log_File: mysql-bin.000289Read_Master_Log_Pos: 25433767Relay_Log_File: mysql-relay-bin.000003Relay_Log_Pos: 630Relay_Master_Log_File: mysql-bin.000289Slave_IO_Running: YesSlave_SQL_Running: Yes
主从同步正常了, 同样的方法修复其它slave机器.
