OS:Cent OS 6.3
DB:5.5.14
如果一台服务器上有100个MySQL数据库实例，此时需要给不同端口的几个数据库添加用户名、密码并授权应用IP，一个个授权没问题，反正累的不是我，哇咔咔。
创建add_user.sh
#/bin/bash
#add user to mysql db
passpwd="yoon"
cat user.txt | while read user
do
port=`echo $user |awk '{print $1 }'`
username=`echo $user |awk '{print $2 }'`
pwd=`echo $user |awk '{print $3 }'`
db=`echo $user |awk '{print $4 }'`
# echo 'port='$port';username='$username';pwd='$pwd';db='$db
/export/servers/mysql/bin/mysql -S /export/data/mysql/tmp/mysql$port.sock -uroot -p$passpwd <<EOF
use mysql;
GRANT SELECT,INSERT,UPDATE,DELETE ON $db.* TO '$username'@'192.17.12.2' IDENTIFIED BY '$pwd';
GRANT SELECT,INSERT,UPDATE,DELETE ON $db.* TO '$username'@'192.17.12.3' IDENTIFIED BY '$pwd';
GRANT SELECT,INSERT,UPDATE,DELETE ON $db.* TO '$username'@'192.17.12.4' IDENTIFIED BY '$pwd';
flush privileges;
EOF
done
创建user.txt
2013 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k09kX yoon
2014 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k10kX yoon
2015 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k11kX yoon
2016 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k12kX yoon
2017 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k13kX yoon
2018 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k14kX yoon
2020 yoon_rw WY811JnJTzcjjfZO..Ui_8Q8i8k15kX yoon
[root@yoon ~]# sh add_user.sh