3分钟解决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：

Mysql> stop slave;
 
mysql> set global sql_slave_skip_counter=1;

mysql> start slave;

故障模拟：

从库如果误插入

mysql> insert into helei(text) values('iii');
Query OK, 1 row affected (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 (0.00
sec)
 
mysql> show slave
status\G
***************************
1. row ***************************
               Slave_IO_State: Waiting for
master 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: Yes
            Slave_SQL_Running: Yes
 
 
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 (0.00
sec)
 
 
 
 
 
 
mysql>show slave status\G
***************************
1. row ***************************
               Slave_IO_State: Waiting for
master 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: Yes
            Slave_SQL_Running: No
              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 error
HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000005, end_log_pos
2678
                 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: 1062
               Last_SQL_Error: Could not
execute 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's
master log mysql-bin.000005, end_log_pos 2678
  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 in
set (0.00 sec)

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

出现这样的问题，先停从库，set跳过这条事务

HE1从库操作

mysql> stop slave;
Query OK, 0 rows
affected (0.26 sec)
 
mysql> set global sql_slave_skip_counter=1;（这里写10也是一样的,最好不用这种方法，用pt-slave-restart，无需手动stop/start slave）
Query OK, 0 rows
affected (0.30 sec)
 
mysql> start slave;
Query OK, 0 rows
affected (0.04 sec)
 
mysql> show slave status\G
***************************
1. row ***************************
               Slave_IO_State: Waiting for
master 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: 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: 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 read
all 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 (0.00
sec)