1032错误----现在生产库中好多数据,在从库误删了,生产库更新后找不到了,现在主从不同步了,再跳过错误也没用,因为没这条,再更新还会报错
临时解决方案
mysql> stop slave; Query OK, 0 rowsaffected (0.00 sec) mysql> set global sql_slave_skip_counter=1; ERROR 1193 (HY000):Unknown system variable 's_slave_skip_counter' mysql> set global sql_slave_skip_counter=1; Query OK, 0 rowsaffected (0.00 sec) mysql> start slave; Query OK, 0 rowsaffected (0.00 sec)
永久解决方案:
end_log_pos 有了它,根据pos值,直接就能找到,找到delete那条数据,反做(变成insert)
故障模拟:
HE1从库误删
mysql> delete from helei where id=3; Query OK, 1 rowaffected (0.29 sec) mysql> select * from helei; +----+------+ | id | text | +----+------+ | 1 | aa | | 2 | bb | | 4 | ee | | 5 | ff | | 6 | gg | | 7 | hh | +----+------+ 6 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: 3711 Relay_Log_File:HE1-relay-bin.000007 Relay_Log_Pos: 484 Relay_Master_Log_File: mysql-bin.000005 Slave_IO_Running: Yes Slave_SQL_Running: Yes
此时从库状态是正常的,但一旦主库对该条记录进行操作
HE3主库更新从库刚刚误删的数据
mysql> update helei set text='ccc' where id=3; Query OK, 1 rowaffected (0.01 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> select *from helei; +----+------+ | id | text | +----+------+ | 1 | aa | | 2 | bb | | 3 | ccc | | 4 | ee | | 5 | ff | | 6 | gg | | 7 | hh | +----+------+ 7 rows in set (0.00sec)
HE1从库报错
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: 3918 Relay_Log_File:HE1-relay-bin.000007 Relay_Log_Pos: 484 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: <strong>1032</strong> Last_Error: <strong>Could not execute Update_rows event on table test.helei; Can't find record in 'helei',Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master logmysql-bin.000005, end_log_pos 3887</strong> Skip_Counter: 0 Exec_Master_Log_Pos: 3711 Relay_Log_Space: 1626 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>1032</strong> Last_SQL_Error: <strong>Could not execute Update_rows event on table test.helei;Can't find record in 'helei', Error_code: 1032; handler errorHA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000005, end_log_pos 3887(这个mysql-bin.000005,end_log_pos3887是主库的)</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 09:25:02 Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 1 row in set (0.00sec)
此时主从又不同步了,如果还去执行跳过错误操作,主从恢复同步,而且状态均为yes,但!这并不能解决该问题,如果主库又更新该条记录,那么还是会报相同错误,而且pos号还会变,这就导致了恢复时你不知道前一条的pos号,导致丢失数据。
mysql> stop slave; Query OK, 0 rowsaffected (0.00 sec) mysql> set global sql_slave_skip_counter=1; ERROR 1193 (HY000):Unknown system variable 's_slave_skip_counter' mysql> set global sql_slave_skip_counter=1; Query OK, 0 rowsaffected (0.00 sec) mysql> start slave; Query OK, 0 rowsaffected (0.00 sec) mysql> select * from helei; +----+--------+ | id | text | +----+--------+ | 1 | aa | | 2 | bb | | 4 | ee | | 5 | ff | | 6 | gg | | 7 | hh | | 8 | helei1 | +----+--------+ 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: 4119 Relay_Log_File:HE1-relay-bin.000008 Relay_Log_Pos: 283 Relay_Master_Log_File: mysql-bin.000005 Slave_IO_Running: <strong>Yes</strong> Slave_SQL_Running: <strong>Yes</strong>
这里虽然通过跳过错误达到恢复主从同步,但如果主库又对该条记录更新
mysql> update helei set text='cccc' where id=3; Query OK, 1 rowaffected (0.00 sec) 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: 4328 Relay_Log_File:HE1-relay-bin.000008 Relay_Log_Pos: 283 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: 1032 Last_Error: Could not execute Update_rows event on table test.helei;Can't find record in 'helei', Error_code: 1032; handler errorHA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000005, end_log_pos 4297 Skip_Counter: 0 Exec_Master_Log_Pos: 4119 Relay_Log_Space: 1435 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.helei;Can't find record in 'helei', Error_code: 1032; handler errorHA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000005, end_log_pos 4297 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 09:33:34 Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0