mysql从库Last

mysql从库Last"/>

mysql从库Last

mysql从库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'报错处理

回来查看mysql运行状况与备份情况，登录mysql从库查看主从同步状态

mysql> show slave status\G;
*************************** 1. row ***************************Slave_IO_State: Master_Host: 101.200.*.*Master_User: backupMaster_Port: 3306Connect_Retry: 60Master_Log_File: master-bin.000113Read_Master_Log_Pos: 276925387Relay_Log_File: mysql-relay.000001Relay_Log_Pos: 4Relay_Master_Log_File: master-bin.000113Slave_IO_Running: NoSlave_SQL_Running: YesReplicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 276925387Relay_Log_Space: 120Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_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: NoLast_IO_Errno: 1236Last_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: 0Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 21Master_UUID: e4a43da7-5b58-11e5-a12f-00163e003632Master_Info_File: /home/data/mysql/master.infoSQL_Delay: 0SQL_Remaining_Delay: NULLSlave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update itMaster_Retry_Count: 86400Master_Bind: Last_IO_Error_Timestamp: 170204 10:48:06Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0
1 row in set (0.00 sec)ERROR: 
No query specified

突然之间Slave_IO_Running: 状态变成NO了

解决方法。

首先在从库上执行

stop slave;

查看主库master状态

mysql> show master status\G;
*************************** 1. row ***************************File: mysql-bin.000113Position: 276925387Binlog_Do_DB: Binlog_Ignore_DB: 
Executed_Gtid_Set: 
1 row in set (0.00 sec)ERROR: 
No query specifiedmysql> flush logs;
Query OK, 0 rows affected (0.11 sec)

刷新binlog日志

flush logs;

刷新后的日志会+1

例如上面的 File: mysql-bin.000113 会变成 File: mysql-bin.000114

再次查看master状态

mysql> show master status\G;
*************************** 1. row ***************************File: mysql-bin.000114Position: 120Binlog_Do_DB: Binlog_Ignore_DB: 
Executed_Gtid_Set: 
1 row in set (0.00 sec)ERROR: 
No query specified

然后就不需要在操作master，切换到从库

输入CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000114',MASTER_LOG_POS=120;

执行start slave;

查看从库状态

mysql> show slave status\G;
*************************** 1. row ***************************Slave_IO_State: Waiting for master to send eventMaster_Host: 101.200.*.*Master_User: backupMaster_Port: 3306Connect_Retry: 60Master_Log_File: mysql-bin.000114Read_Master_Log_Pos: 11314Relay_Log_File: mysql-relay.000002Relay_Log_Pos: 11477Relay_Master_Log_File: mysql-bin.000114Slave_IO_Running: YesSlave_SQL_Running: YesReplicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 11314Relay_Log_Space: 11646Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_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: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 21Master_UUID: e4a43da7-5b58-11e5-a12f-00163e003632Master_Info_File: /home/data/mysql/master.infoSQL_Delay: 0SQL_Remaining_Delay: NULLSlave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update itMaster_Retry_Count: 86400Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0
1 row in set (0.00 sec)ERROR: 
No query specified

问题得到解决。