报错：

Could not execute Write_rows event on table time_task.tt_log; Duplicate entry '1483968' for key 'PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000001, end_log_pos 2474

解决问题：

主库操作：

mysql> SHOW BINARY LOGS;

+------------------+-----------+

| Log_name         | File_size |

+------------------+-----------+

| mysql-bin.000001 |    289246 |

+------------------+-----------+

1 row in set (0.00 sec)

mysql> PURGE BINARY LOGS TO 'mysql-bin.000001';

Query OK, 0 rows affected (0.01 sec)

mysql> RESET MASTER;

Query OK, 0 rows affected (0.01 sec)

从库操作：

mysql> stop slave;

Query OK, 0 rows affected (0.00 sec)

mysql> CHANGE MASTER TO MASTER_HOST='192.168.60.80', MASTER_PORT=3306,MASTER_USER='repl', 

MASTER_PASSWORD='XXX';

Query OK, 0 rows affected, 2 warnings (0.00 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: 192.168.60.80

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 12716

               Relay_Log_File: mysql-relay.000002

                Relay_Log_Pos: 12929

        Relay_Master_Log_File: mysql-bin.000001

             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: 12716

              Relay_Log_Space: 13132

              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: 186

                  Master_UUID: 93228932-a66b-11eb-ab7b-005056a51cd1

             Master_Info_File: /var/lib/mysql/master.info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave 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: 

1 row in set (0.00 sec)

ERROR: 

No query specified

主从恢复正常。