mysql密码修改，创建远程用户记录

方法1： 用SET PASSWORD命令

　　mysql -u root

　　mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');

方法2：用mysqladmin

　　mysqladmin -u root password "newpass"

　　如果root已经设置过密码，采用如下方法

　　mysqladmin -u root password oldpass "newpass"

方法3： 用UPDATE直接编辑user表

　　mysql -u root

　　mysql> use mysql;

　　mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';

　　mysql> FLUSH PRIVILEGES;

丢失root密码

　　mysqld_safe --skip-grant-tables&

　　mysql -u root mysql

　　mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';

　　mysql> FLUSH PRIVILEGES;

创建远程用户并授权

创建用户

create user test identified by '123456';

远程授权

 grant all privileges on *.* to 'test'@'%'identified by '123456' with grant option;
# grant all privileges on database.table to user@ip identified by password with grant option;

刷新权限

flush privileges ;

开启Linux 防火墙

iptables -I INPUT 4 -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT     #允许 3306  端口

service iptables save