linux mysql定时备份数据库

1.linux脚本如下

#!/bin/sh

export ctime=`date +%Y%m%d\_%H%S%S`
export backDir=/data/db_dump/backup
export backFile=blog_${ctime}.sql
export backZip=blog_${ctime}.tar.gz

echo 'backup db start...'

mysqldump  --user=root --password=xxx --host=127.0.0.1 --port=3306 --default-character-set=utf8 "blog" > ${backDir}/${backFile}

cd ${backDir}
tar zcvf ${backZip} ${backFile}
rm ${backFile}

echo 'backup db finished'

crontab配置（每天凌晨1点执行）

0 1 * * * source /etc/profile && sh /data/db_dump/db_dump.sh >> /var/log/db_dump.log