Use the crontab system to regularly back up MySQL database _ MySQL every day

The crontab system regularly backs up MySQL databases every day and uses the crontab system to regularly execute backup files and save the backup results by date.

1. create the path to save the backup file/mysqldata

# Mkdir/mysqldata

2. create the/usr/sbin/bakmysql file.

# Vi/usr/sbin/bakmysql

Input

Rq = 'date + % Y % m % d'

Tar zcvf/mysqldata/mysql1_rq.tar.gz/var/lib/mysql

Or write it

Rq = 'date + % Y % m % d'

Mysqldump -- all-databases-u root-p980405>/mysqldata/mysql1_rq.tar.gz

/Var/lib/mysql is the directory of your database files. some users are/usr/local/mysql/data.

/Mysqldata/indicates the directory where the backup file is saved. this can be done according to your requirements.

3. Modify file attributes to make them executable.

# Chmod + x/usr/sbin/bakmysql

4. modify/etc/crontab

# Vi/etc/crontab

Add

01 3 *** root/usr/sbin/bakmysql

Indicates that a backup is performed at three o'clock every day.

5. restart crond.

#/Etc/rc. d/init. d/crond restart

Complete.

In this way, you can see such files in/mysqldata every day.

Mysql20040619.tar.gz

You can download it directly.

Stop the database service process or lock the database before running the tar command,

Otherwise, the database may be damaged when the data is recovered. if you are lucky, you can fix the problem.