解决mysql 1062 主从错误

1062错误----主键冲突，出现这种情况就是从库出现插入操作，主库又重新来了一遍，iothread没问题，sqlthread出错

解决方案：

从库操作

mysql> stop slave;
Query OK, 0 rowsaffected (0.26 sec)

mysql> set global sql_slave_skip_counter=1;
Query OK, 0 rowsaffected (0.30 sec)

mysql> start slave;
Query OK, 0 rowsaffected (0.04 sec)

mysql> show slavestatus\G
***************************1. row ***************************
               Slave_IO_State: Waiting formaster to send event
                  Master_Host: 192.168.1.250
                  Master_User: mysync
                  Master_Port: 2503306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000005
          Read_Master_Log_Pos: 2909
               Relay_Log_File:HE1-relay-bin.000006
                Relay_Log_Pos: 283
        Relay_Master_Log_File: mysql-bin.000005
             Slave_IO_Running: <strong>Yes</strong>
            Slave_SQL_Running: <strong>Yes</strong>
              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: 2909
              Relay_Log_Space: 1214
              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: 2503306
                  Master_UUID:f7c96432-f665-11e5-943f-000c2967a454
             Master_Info_File:/data/mysql/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has readall relay log; waiting for the slave I/O thread to update it
           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
1 row in set (0.00sec)
 

故障模拟

从库如果误插入

mysql> insertinto helei(text) values('iii');
Query OK, 1 rowaffected (0.28 sec)
mysql> select *from helei;
+----+------+
| id | text |
+----+------+
|  1 | aa  |
|  2 | bb  |
|  3 | cc  |
|  4 | ee  |
|  5 | ff  |
|  6 | gg  |
|  7 | hh  |
|  8 | iii |
+----+------+
8 rows in set (0.00sec)

mysql> show slavestatus\G
***************************1. row ***************************
               Slave_IO_State: Waiting formaster to send event
                  Master_Host: 192.168.1.250
                  Master_User: mysync
                  Master_Port: 2503306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000005
          Read_Master_Log_Pos: 2509
               Relay_Log_File:HE1-relay-bin.000005
                Relay_Log_Pos: 480
        Relay_Master_Log_File: mysql-bin.000005
             Slave_IO_Running: <strong>Yes</strong>
            Slave_SQL_Running: <strong>Yes</strong>

这时候从库是正常的，但由于从库私自插入数据，已经和主库不一致，如果这时主库也插入相同的数据

主库此时没有8,iii这条记录

mysql> select * from helei;
+----+------+
| id | text |
+----+------+
|  1 | aa  |
|  2 | bb  |
|  3 | cc  |
|  4 | ee  |
|  5 | ff  |
|  6 | gg  |
|  7 | hh  |
+----+------+
7 rows in set (0.00sec)

mysql>show slave status\G
***************************1. row ***************************
               Slave_IO_State: Waiting formaster to send event
                  Master_Host: 192.168.1.250
                  Master_User: mysync
                  Master_Port: 2503306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000005
          Read_Master_Log_Pos: 2709
               Relay_Log_File:HE1-relay-bin.000005
                Relay_Log_Pos: 480
        Relay_Master_Log_File: mysql-bin.000005
             Slave_IO_Running: <strong>Yes</strong>
            Slave_SQL_Running: <strong>No</strong>
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 1062
                  Last_Error: Could not execute Write_rows event on table test.helei;Duplicate entry '8' for key 'PRIMARY', Error_code: 1062; handler errorHA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000005, end_log_pos2678
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 2509
              Relay_Log_Space: 851
              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: 0
                Last_IO_Error:
               Last_SQL_Errno: <strong>1062</strong>
               Last_SQL_Error: <strong>Could notexecute Write_rows event on table test.helei; Duplicate entry '8' for key'PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event'smaster log mysql-bin.000005, end_log_pos 2678</strong>
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 2503306
                  Master_UUID:f7c96432-f665-11e5-943f-000c2967a454
             Master_Info_File:/data/mysql/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State:
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp: 160331 09:12:02
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row inset (0.00 sec)