MySQL Log File Maintenance and deletion backup practices

We all know that the main function of the log file is to restore the data of the MySQL database. Therefore, the log file maintenance of the MySQL database is also very important. When MySQL and log files are used together.

You sometimes want to delete/back up old log files and tell MySQL to start recording in new files.

This article describes how to enable new log files, including updates and general logs. The method described here also applies to binary logs.

How to use the new update log

If you only use one Update log, you only need to clear the MySQL Log File, then remove the old Update log file to a backup, and then enable the new update log.

Use the following methods to force the server to enable new update logs:

 
 

  
  
mysqladmin flush-logs 
 
 

You generally need to provide the following database users in the command line:

 
 

  
  
mysqladmin –u root –p flush-logs  
  
  
mysqladmin refresh  
 
 

You generally need to provide the following database users in the command line:

 
 

  
  
mysqladmin –u root –p refresh 
 
 

Maintain MySQL Log Files/delete backups. If you are using MySQL 3.21 or earlier, you must use mysqladmin refresh.

SQL commands

FLUSH LOGS

Restart the server

The preceding methods have the following functions:

Close and then open the standard and update record files. If you specify an update record file without an extension, the extension number of the new update record file will be 1 higher than that of the previous file.

 
 

  
  
mysql>FLUSH LOGS; 
 
 

How to use new regular logs

The above method can also force update of regular logs.

To back up General logs, the steps may be complicated:

 
 

  
  
$ cd mysql-data-directory$ mv mysql.log mysql.old$ mysqladmin flush-tables 
 
 

Make a backup and delete "mysql. old ".