#0 修改root密码

mysqladmin -u root -p password yeqing

#1 删除无用账号

select user,hostfrom mysql.user;

delete from mysql.user where user != ‘root‘;

flush privileges;

#2 误删除root账号怎么办?

/etc/init.d/mysqld stop 或者 pkill mysqld

mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

mysql

UPDATE mysql.user SET Password=PASSWORD(‘yeqing‘),host=‘localhost‘ where USER=‘root‘;

flush privileges;

pkill mysqld

pkill mysqld

mysql -u root -p

yeqing 进入

#3 先创建账号再授权（方法一）

create useryeqing@‘localhost‘ identified by ‘123456‘;

grant all ondb1.* to yeqing@‘localhost‘;

或者

grant select,insert,update,delete,create,dropon db1.* to ‘yeqing’@’192.168.1.%’ identified by ‘test123’

flushprivileges;

show grants foryeqing@‘localhost‘;

#4 创建账号的同时授权（方法二）

grant all onmysql.* to yeqing@‘localhost‘ identified by ‘123456‘;

grant all on  *.* to  test@’192.168.1.%’  identified by ‘test123’

flushprivileges;

mysql账号和权限管理