MySQL Master/Slave failure error Gotfatalerror1236 Solution

MySQL Master/Slave failure error Gotfatalerror1236 Solution

MySQL Master/Slave failure Got fatal error 1236 Solution

The slave server reports an error due to the abnormal restart of the master server. The error is as follows:
Show slave status error: 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

... 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 Error Log:

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

According to the habit, first try to change the position.

Mysql> Stop slave;Mysql> Change master to master_log_file = 'mysql-bin.000288 ', master_log_pos = 627625751;Mysql> Start slave;

The error persists. log on to the master server to view the binlog log.
Search the master server log according to the error mark:

[Root @ db1 ~] # Mysqlbinlog -- start-position = 627655136/data/mysql/binlog/mysql-bin.000288/*! 40019 SET @ session. max_insert_delayed_threads = 0 */;/*! 50003 SET @ OLD_COMPLETION_TYPE = @ COMPLETION_TYPE, COMPLETION_TYPE = 0 */; DELIMITER /*! */; # At 4 #111010 13:31:19 server id 4 end_log_pos 106 Start: binlog v 4, server v 5.1.45-logcreated 111010 13:31:19 # Warning: this binlog is either in use or was not closed properly. BINLOG 'your AAAAICAgC '/*! */; DELIMITER; # End of log fileROLLBACK/* added by mysqlbinlog */;/*! 50003 SET COMPLETION_TYPE = @ OLD_COMPLETION_TYPE */;

The location is not displayed.

[Root @ db1 ~] # Mysql binlog/data/mysql/binlog/mysql-bin.000288> test.txtLess text.txt read the last part # at 627625495 #111010 16:35:46 server id 1 end_log_pos 627625631 Query thread_id = 45613333exec_time = 32758 error_code = 0 set timestamp = 1318289746 /*! */; Delete from freeshipping_bef_update where part = 'ar-4006WLM 'and code = ''/*! */; # 627625631#111010 16:35:46 server id 1 end_log_pos 627625751Query thread_id = 45613333exec_time = 32758 error_code = 0 set 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 */;

Find a position closest to error 627655136627625631.

Return to the Server Load balancer instance and change master to point postion to this location.

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)

View again

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

The master-slave synchronization is normal, and other slave machines are repaired in the same way.

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