设置主从复制时发生报错Could not find first log file name in binary log index file‘；解决方案

如图所示，slave_io_runnind:no,slave_sql_running:yes

此时，主从配置错误，我们可以查看Last_IO_Error:来查看报错信息

此时，我们需要停止从服务器的主从服务，

sql 复制代码

mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)

到master机器登陆mysql：

记录master的bin的位置，例如：

mysql> show master status;

必要时使用flush log;进行刷新

然后。我们到从服务器进行修改

sql 复制代码

mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> change master to master_log_file='service-bin.000004',master_log_pos=157;
Query OK, 0 rows affected, 3 warnings (0.01 sec)

mysql> change master to master_host='master1',master_user='rep',master_password='Wyxbuke00.',master_log_file='service-bin.000004';
Query OK, 0 rows affected, 8 warnings (0.02 sec)

mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for source to send event
                  Master_Host: master1
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: service-bin.000004
          Read_Master_Log_Pos: 157
               Relay_Log_File: server-relay-bin.000002
                Relay_Log_Pos: 328
        Relay_Master_Log_File: service-bin.000004
             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: 157
              Relay_Log_Space: 539
              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
                  Master_UUID: d5ddcb15-d063-11ee-a4cc-000c2904e4be
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Replica has read all relay log; waiting for more updates
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 
     Last_SQL_Error_Timestamp: 
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 
            Executed_Gtid_Set: 
                Auto_Position: 0
         Replicate_Rewrite_DB: 
                 Channel_Name: 
           Master_TLS_Version: 
       Master_public_key_path: 
        Get_master_public_key: 0
            Network_Namespace: 
1 row in set, 1 warning (0.00 sec)
问题解决！