创建一个单独的备份用户backup，不要用root

创建备份目录 ：mkdir -p /databackup/fullbackup

mysql> grant SELECT,RELOAD,SHOW DATABASES,SUPER,LOCK TABLES,REPLICATION CLIENT,SHOWVIEW,EVENT,FILE on *.* to backup@'localhost' identified by 'MANAGER';

###### 备份数据库的脚本###############

##################

#author rrhelei@126.com#

#######90天备份过期自动删除###########

user=backup

passwd=MANAGER

host=localhost

date=Master_db_`date+%Y%m%d%H%M`

mysql_bin=/usr/local/mysql/bin

$mysql_bin/mysqldump-u$user -p$passwd -h$host --single-transaction -A --master-data=2 > /databackup/fullbackup/$date.sql

if[   -f /databackup/fullbackup/$date.sql  ]

then

cd  /databackup/fullbackup;tar-cvzf $date.sql.tar.gz $date.sql

rm -fr $date.sql

fi

find /databackup/fullbackup/ -type f -name "*sql*" -mtime +90| xargs rm -fr {};

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mysqlmysql备份脚本全库备份MySQL