Mysql从二进制日志读取数据时从master出错1236

我有 2 个具有主/从配置的 MySql，并且复制失败。 MySql Master崩溃了，新的寄存器在mysql-bin.index被创建。我删除了这个新的寄存器，因为文件系统中不存在该文件。然后MySql Master重启成功。

现在，我在从站中出现了下一个错误：

mysql> show slave status \G
*************************** 1. row ***************************
           Slave_IO_State: 
              Master_Host: 10.64.253.99
              Master_User: replication
              Master_Port: 3306
            Connect_Retry: 60
          Master_Log_File: mysql-bin.001050
      Read_Master_Log_Pos: 54868051
           Relay_Log_File: mysqld-relay-bin.000001
            Relay_Log_Pos: 4
    Relay_Master_Log_File: mysql-bin.001050
         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: 54868051
          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

如果我执行“show master status”来查看mysql bin日志文件和位置：

mysql> show master status \G
*************************** 1. row ***************************
            File: mysql-bin.001050
        Position: 55586895
    Binlog_Do_DB: aaa
 Binlog_Ignore_DB: xxx,yyy,zzz,mysql

然后我为从站设置新配置：

STOP SLAVE;
CHANGE MASTER TO 
    MASTER_HOST='10.64.253.99',
    MASTER_USER='slaveUser',
    MASTER_PASSWORD='12345',
    MASTER_LOG_FILE='mysql-bin.001050', 
    MASTER_LOG_POS=55586895;
START SLAVE;

如果我再次检查从属状态，则会出现相同的错误：

mysql> show slave status \G
*************************** 1. row ***************************
           Slave_IO_State: 
              Master_Host: 10.64.253.99
              Master_User: replication
              Master_Port: 3306
            Connect_Retry: 60
          Master_Log_File: mysql-bin.001050
      Read_Master_Log_Pos: 55586895
           Relay_Log_File: mysqld-relay-bin.000001
            Relay_Log_Pos: 4
    Relay_Master_Log_File: mysql-bin.001050
         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: 55586895
          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

我已经在MySql Master中检查过mysql-bin.001050存在并且不为空。

这是生产环境，每分钟都会插入新数据。位置值可以在分钟或秒内改变。我不知道这是否是一个问题。

max_allowed_pa​​cket变量在两个MySql中具有相同的值（16M）。

为什么slave找不到二进制日志文件？

你可以试试这个：

1. Slave: stop slave;
2. Master: flush logs

3. Master: show master status; — take note of the master log file and master log position

4. Slave: CHANGE MASTER TO MASTER_LOG_FILE='log-bin.00000X', MASTER_LOG_POS=106;

5. Slave: start slave;