mysql複製出錯與sql_slave_skip_counter

當源數據不一樣或某些情況下，mysql複製會出錯。

雙主A機

mysql> select * from test1;
+--------------------------------------+
| uid                                  |
+--------------------------------------+
| d8426457-c725-11e4-94c6-0800270964a5 |
+--------------------------------------+
1 row in set (0.01 sec)

雙主B機

mysql> select * from test1;
+--------------------------------------+
| uid                                  |
+--------------------------------------+
| 4c27d395-c701-11e4-8c2a-08002796172a |
+--------------------------------------+
1 row in set (0.00 sec)

mysql> update test1 set uid = uuid();
Query OK, 1 row affected (0.04 sec)
Rows matched: 1  Changed: 1  Warnings: 0

此時A機會出錯

mysql> show slave status \G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.56.3
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000030
          Read_Master_Log_Pos: 3977
               Relay_Log_File: mysql34-relay-bin.000008
                Relay_Log_Pos: 283
        Relay_Master_Log_File: mysql-bin.000030
             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: 1032
                   Last_Error: Could not execute Update_rows event on table test.test1; Can't find record in 'test1', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the event's master log mysql-bin.000030, end_log_pos 3946
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 3712
              Relay_Log_Space: 886
              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: 1032
               Last_SQL_Error: Could not execute Update_rows event on table test.test1; Can't find record in 'test1', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the event's master log mysql-bin.000030, end_log_pos 3946
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 23306
                  Master_UUID: 64f4a34e-9258-11e4-827c-08002796172a
             Master_Info_File: /data/mysql/user_3306/data/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: 150310 09:10:21
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 
            Executed_Gtid_Set: 
                Auto_Position: 0
1 row in set (0.00 sec)

可以通過設置sql_slave_skip_counter參數並重啓slave跳過這個錯誤

mysql> set global sql_slave_skip_counter=1;
Query OK, 0 rows affected (0.00 sec)

mysql> stop slave;
Query OK, 0 rows affected (0.04 sec)

mysql> start slave;
Query OK, 0 rows affected (0.02 sec)

重啓後該參數值仍爲0

mysql> show variables like '%slave_skip%';
+------------------------+-------+
| Variable_name          | Value |
+------------------------+-------+
| slave_skip_errors      | OFF   |
| sql_slave_skip_counter | 0     |
+------------------------+-------+
2 rows in set (0.00 sec)

而slave狀態已改爲正常

mysql> show slave status \G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.56.3
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000030
          Read_Master_Log_Pos: 3977
               Relay_Log_File: mysql34-relay-bin.000009
                Relay_Log_Pos: 283
        Relay_Master_Log_File: mysql-bin.000030
             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: 3977
              Relay_Log_Space: 886
              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: 23306
                  Master_UUID: 64f4a34e-9258-11e4-827c-08002796172a
             Master_Info_File: /data/mysql/user_3306/data/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)

mysql> 

相關數據處理好就可以了