定时自动备份mysql数据库

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