Backup database regularly under linux

Create a mysql_backup directory in the /root directory to store mysql backup files

mkdir /root/mysql_backup

cd /root/mysql_backup

vi a script file

vi backup.sh

Add code to this file

backupdir=/root/mysql_backup  time=`date +%Y%m%d%H`

mysqldump -uroor -proot databasename>$dackupdir/databasename$time.sql;

After programming, wq saves the file, where databasename is the name of the database you want to back up

Then give this file executable permission chmod 777 backup.sh

 ./backup.sql

Then directly execute the file to see if there is a .sql file generated;

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cd /etc

vi crontab

insert

29 16 * * * root /root/mysql_backup/backup.sh

Explain that at 16:29, root executes the backup.sh file under root/mysql_backup

Restart crontab service

/etc/rc.d/init.d/crond restart

mysql backup regularly