一：问题描述
由于10.0.3.96此虚拟机所在的物理机存储不够了，所以上面的数据库也无法访问了。
后来10.0.3.96可以正常访问后，其从库10.0.3.97却发生了异常：
mysql> show slave status G;
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 10.0.3.96
Master_User: admin
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000417
Read_Master_Log_Pos: 228308262
Relay_Log_File: vhost_eip_26-relay-bin.001024
Relay_Log_Pos: 228308408
Relay_Master_Log_File: mysql-bin.000417
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: 228308262
Relay_Log_Space: 228308614
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: 'Client requested master to start replication from impossible position; the last event was read from './mysql-bin.000417' at 228308262, the last byte read was read from './mysql-bin.000417' at 4.'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
1 row in set (0.01 sec)
ERROR:
No query specified
经查看，该binlog文件最后一个position是228287326，没有228308262这个位置：
# at 228287326
#170223 3:25:08 server id 1 end_log_pos 228287353 Xid = 1951871937
COMMIT/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
二：解决办法
从下一个文件mysql-bin.000418的起始位置开始复制。
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)
mysql> CHANGE MASTER TO MASTER_HOST ='10.0.3.96',MASTER_LOG_FILE ='mysql-bin.000418',MASTER_LOG_POS = 4;
Query OK, 0 rows affected (0.25 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: 10.0.3.96
Master_User: admin
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000418
Read_Master_Log_Pos: 107
Relay_Log_File: vhost_eip_26-relay-bin.000002
Relay_Log_Pos: 253
Relay_Master_Log_File: mysql-bin.000418
Slave_IO_Running: Yes
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: 107
Relay_Log_Space: 416
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)
ERROR:
No query specified
---------------------
作者：雅冰石
来源：CSDN
原文：https://blog.csdn.net/yabingshi_tech/article/details/56841704
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