新建备份文件并赋予可以执行的权限
mkdir -p /home/mysql_backup/
touch /home/mysql_backup/mysql_backup.sh
chmod 551 /home/mysql_backup/mysql_backup.sh编辑/home/mysql_backup/mysql_backup.sh
vim /home/mysql_backup/mysql_backup.sh写入以下内容
backupdir=/home/mysql_backup
time=` date +%Y_%m_%d_%H_%M_%S `
db_user=root
db_pass=123456
mysqldump --all-databases -u $db_user -p$db_pass | gzip > $backupdir/$time.sql.gz
find $backupdir -name "*.sql.gz" -type f -mtime +5 -exec rm -rf {} \; > /dev/null 2>&1编辑crontab
crontab -e在最后一行加入
* */1 * * * root /home/mysql_backup/mysql_backup.sh重启crontab
service crond restart