Mysql database recovery (using mysqlbinlog command)

           1： Turn on binlog logging  

modify mysql The configuration file mysql.ini, stay [mysqld] Add under node  

Copy code   The code is as follows : 

# log-bin 

log-bin = E:/log/logbin.log 

Do not include Chinese and spaces in the path . restart mysql service . Stop and start... From the command line mysql service  

Copy code   The code is as follows : 

c:\>net stop mysql; 

c:\>net start mysql; 

Enter the command line mysql And check whether the binary log has been started  

Sql Code  

Copy code   The code is as follows : 

mysql>show variables like 'log_%'; 

After the log is successfully opened , Will be in E:/log/ Create under directory logbin.index and logbin.000001 Two documents .logbin.000001 Is the backup file of the database , You can restore the database through this file later . 

2： View the backed up binaries  

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog e:/log/logbin.000001 

There are many operations recorded in the future , The command line method is basically useless . You can view the log content by exporting the log to a file  

2.1 export  

Xml Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog e:/log/logbin.000001 > e:/log/log.txt 

">": Import into file ; ">>": Append to file  

If there are multiple log files  

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\> mysqlbinlog e:/log/logbin.000001 > e:/log/log.sql 

c:\mysql\bin\> mysqlbinlog e:/log/logbin.000002 >> e:/log/log.sq 

2.2 Export according to the specified location ： 

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog --start-position=185 --stop-position=338 e:/log/logbin.000001 > e:/log/log3.txt 

2.3 Export according to the specified time ： 

Xml Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog --start-datetime="2010-01-07 11:25:56" --stop-datetime="2010-01-07 13:23:50" e:/log/logbin.000001 > e:/log/log_by_date22.txt 

3： Restore database from backup  

Did an update operation , After that, the contents of the log are as follows ： 

Sql Code  

Copy code   The code is as follows : 

/*!40019 SET @@session.max_insert_delayed_threads=0*/; 

/*!50003 SET @[email protected]@COMPLETION_TYPE,COMPLETION_TYPE=0*/; 

DELIMITER /*!*/; 

# at 4 

#110107 13:23:50 server id 1 end_log_pos 106 Start: binlog v 4, server v 5.1.53-community-log created 110107 13:23:50 at startup 

# Warning: this binlog is either in use or was not closed properly. 

ROLLBACK/*!*/; 

BINLOG ' 

ZqMmTQ8BAAAAZgAAAGoAAAABAAQANS4xLjUzLWNvbW11bml0eS1sb2cAAAAAAAAAAAAAAAAAAAAA 

AAAAAAAAAAAAAAAAAABmoyZNEzgNAAgAEgAEBAQEEgAAUwAEGggAAAAICAgC 

'/*!*/; 

# at 106 

#110107 13:26:58 server id 1 end_log_pos 185 Query thread_id=44 exec_time=1 error_code=0 

SET TIMESTAMP=1294378018/*!*/; 

SET @@session.pseudo_thread_id=44/*!*/; 

SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1, @@session.autocommit=1/*!*/; 

SET @@session.sql_mode=1344274432/*!*/; 

SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/; 

/*!\C utf8 *//*!*/; 

SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/; 

SET @@session.lc_time_names=0/*!*/; 

SET @@session.collation_database=DEFAULT/*!*/; 

BEGIN 

/*!*/; 

# at 185 

#110107 13:26:58 server id 1 end_log_pos 338 Query thread_id=44 exec_time=1 error_code=0 

use ncl-interactive/*!*/; 

SET TIMESTAMP=1294378018/*!*/; 

UPDATE `t_system_id` SET `id_value`='3000' WHERE (`table_name`='t_working_day') 

/*!*/; 

# at 338 

#110107 13:26:58 server id 1 end_log_pos 365 Xid = 8016 

COMMIT/*!*/; 

DELIMITER ; 

DELIMITER /*!*/; 

DELIMITER ; 

# End of log file 

ROLLBACK /* added by mysqlbinlog */; 

/*!50003 SET [email protected]_COMPLETION_TYPE*/; 

/*!40019 SET @@session.max_insert_delayed_threads=0*/; 

/*!50003 SET @[email protected]@COMPLETION_TYPE,COMPLETION_TYPE=0*/; 

DELIMITER /*!*/; 

# at 4 

#110107 13:23:50 server id 1 end_log_pos 106 Start: binlog v 4, server v 5.1.53-community-log created 110107 13:23:50 at startup 

# Warning: this binlog is either in use or was not closed properly. 

ROLLBACK/*!*/; 

BINLOG ' 

ZqMmTQ8BAAAAZgAAAGoAAAABAAQANS4xLjUzLWNvbW11bml0eS1sb2cAAAAAAAAAAAAAAAAAAAAA 

AAAAAAAAAAAAAAAAAABmoyZNEzgNAAgAEgAEBAQEEgAAUwAEGggAAAAICAgC 

'/*!*/; 

# at 106 

#110107 13:26:58 server id 1 end_log_pos 185 Query thread_id=44 exec_time=1 error_code=0 

SET TIMESTAMP=1294378018/*!*/; 

SET @@session.pseudo_thread_id=44/*!*/; 

SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1, @@session.autocommit=1/*!*/; 

SET @@session.sql_mode=1344274432/*!*/; 

SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/; 

/*!\C utf8 *//*!*/; 

SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/; 

SET @@session.lc_time_names=0/*!*/; 

SET @@session.collation_database=DEFAULT/*!*/; 

BEGIN 

/*!*/; 

# at 185 

#110107 13:26:58 server id 1 end_log_pos 338 Query thread_id=44 exec_time=1 error_code=0 

use ncl-interactive/*!*/; 

SET TIMESTAMP=1294378018/*!*/; 

UPDATE `t_system_id` SET `id_value`='3000' WHERE (`table_name`='t_working_day') 

/*!*/; 

# at 338 

#110107 13:26:58 server id 1 end_log_pos 365 Xid = 8016 

COMMIT/*!*/; 

DELIMITER ; 

DELIMITER /*!*/; 

DELIMITER ; 

# End of log file 

ROLLBACK /* added by mysqlbinlog */; 

/*!50003 SET [email protected]_COMPLETION_TYPE*/; 

3.1 recovery ： 

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog e:/log/logbin.000001 | mysql -u root -p 

3.2 Restore according to the specified location ： 

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog --start-position=185 --stop-position=338 e:/log/logbin.000001 | mysql -u root -p 

3.3 Recover at a specified time ： 

Xml Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysqlbinlog --start-datetime="2010-01-07 11:25:56" --stop-datetime="2010-01-07 13:23:50" e:/log/logbin.000001 | mysql -u root -p 

3.4 Recover from the exported script file  

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysql -e "source e:/log/log.sql" 

4. Other common operations  

4.1 View all log files  

Sql Code  

Copy code   The code is as follows : 

mysql>show master logs; 

4.2 Currently in use binlog file  

Sql Code  

Copy code   The code is as follows : 

mysql>show binlog events \g; 

4.3 Produce a new binlog Log files  

Sql Code  

Copy code   The code is as follows : 

mysql>flush logs; 

4.4 Delete all binary logs , And start recording again （ Be careful ：reset master The command will delete all binary logs ） 

Sql Code  

Copy code   The code is as follows : 

mysql > flush logs; 

mysql > reset master; 

4.5 Quickly back up data to sql file  

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin>mysqldump -u root -p --opt --quick interactive > e:/log/mysqldump.sql 

For easy viewing , Write the command recovered from the script once  

Sql Code  

Copy code   The code is as follows : 

c:\mysql\bin\>mysql -e "source e:/log/mysqldump.sql"