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Editor to share with you how to set slave_exec_mode in mysql to automatically skip synchronization replication errors, I believe most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article, let's go to know it!

The slave_exec_mode setting can skip 1032 (record not found) and 1062 (duplicate primary key) errors and log them in the error log.

The function of slave_exec_mode is the same as that of slave_skip_errors, except that slave_exec_mode can be dynamically set online. Slave_skip_errors must be added to the configuration file for the restart to take effect.

Prepare the library

Mysql > select * from testdb1.student

+-+

| | id | name | class | score | |

+-+

| | 1 | a | 1 | 45 |

| | 2 | b | 1 | 46 | |

| | 3 | c | 2 | 89 | |

| | 4 | d | 2 | 90 | |

| | 5 | e | 3 | 67 | |

| | 6 | f | 3 | 87 | |

| | 7 | g | 4 | 77 | |

| | 8 | h | 4 | 91 | |

+-+

8 rows in set (0.00 sec)

Mysql > delete from testdb1.student where id > 5

Query OK, 3 rows affected (0.00 sec)

Mysql > commit

Query OK, 0 rows affected (0.00 sec)

# before modifying parameters

Main library master

Mysql > delete from testdb1.student where id > 7

Query OK, 1 row affected (0.00 sec)

Standby database view status

Mysql > show slave status\ G

* * 1. Row *

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.56.91

Master_User: rep

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: ray-bin.000008

Read_Master_Log_Pos: 1272

Relay_Log_File: ray-relay-bin.000003

Relay_Log_Pos: 1226

Relay_Master_Log_File: ray-bin.000008

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 Delete_rows event on table testdb1.student; Can't find record in 'student', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the event's master log ray-bin.000008, end_log_pos 1241

Skip_Counter: 0

Exec_Master_Log_Pos: 1065

Relay_Log_Space: 1957

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 Delete_rows event on table testdb1.student; Can't find record in 'student', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the event's master log ray-bin.000008, end_log_pos 1241

Replicate_Ignore_Server_Ids:

Master_Server_Id: 2

Master_UUID: 840f94e0-8ea0-11e5-af92-080027a94012

Master_Info_File: / data/3307/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: 151126 12:42:37

Master_SSL_Crl:

Master_SSL_Crlpath:

Retrieved_Gtid_Set:

Executed_Gtid_Set:

Auto_Position: 0

1 row in set (0.00 sec)

Mysql > stop slave

Query OK, 0 rows affected (0.78 sec)

Mysql > set global sql_slave_skip_counter=1

Query OK, 0 rows affected (0.01 sec)

Mysql > start slave

Query OK, 0 rows affected (0.33 sec)

# modify slave database parameters

Mysql > show variables like'% slave_exec_mode%'

+-+ +

| | Variable_name | Value |

+-+ +

| | slave_exec_mode | STRICT |

+-+ +

1 row in set (0.00 sec)

Mysql > set global slave_exec_mode=idempotent

Query OK, 0 rows affected (0.00 sec)

Mysql > show variables like'% slave_exec_mode%'

+-+ +

| | Variable_name | Value |

+-+ +

| | slave_exec_mode | IDEMPOTENT |

+-+ +

1 row in set (0.00 sec)

The main database deletes data

Mysql > delete from testdb1.student where id > 6

Query OK, 1 row affected (0.01sec)

Mysql > commit

Query OK, 0 rows affected (0.00 sec)

Prepare the database to view status and error logs

Mysql > show slave status\ G

* * 1. Row *

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.56.91

Master_User: rep

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: ray-bin.000008

Read_Master_Log_Pos: 1479

Relay_Log_File: ray-relay-bin.000004

Relay_Log_Pos: 488

Relay_Master_Log_File: ray-bin.000008

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: 1479

Relay_Log_Space: 1972

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: 2

Master_UUID: 840f94e0-8ea0-11e5-af92-080027a94012

Master_Info_File: / data/3307/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)

[root@ray] # tail-20f / data/3307/data/mysql_ray.err

2015-11-26 12:50:29 12127 [Warning] Slave SQL: Could not execute Delete_rows event on table testdb1.student; Can't find record in 'student', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the event's master log ray-bin.000008, end_log_pos 1655, Error_code: 1032

Note: pos may not match, because the problem of interception, do not care.

The above is all the contents of the article "how to set slave_exec_mode in mysql to automatically skip synchronous replication errors". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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