mysql5.7 when forgetting your password, change the root password

Source: Internet
Author: User

(1). Since MySQL5.7 is installed, a random password is produced in the root directory at the first boot, and the file name is. mysql_secret
So, login with a random password to log in, and then use the following command to modify the password
"SET PASSWORD = PASSWORD (' new PASSWORD ');"

(2). When you forget the root password,
Take windows as an example:

 1. 关闭正在运行的MySQL服务。 2. 打开DOS窗口,转到mysql\bin目录 3. 输入mysqld --skip-grant-tables 回车 --skip-grant-tables 的意思是启动MySQL服务的时候跳过权限表认证。 4. 再开一个DOS窗口(因为刚才那个DOS窗口已经不能动了),转到mysql\bin目录。 5. 输入mysql回车,如果成功,将出现MySQL提示符 >。 6. 连接权限数据库: use mysql; (别忘了最后加分号) 。 7. 改密码:update user set password=password("123") where user="root"; (别忘了最后加分号) 。 如果修改密码出现 **mysql修改密码错误 ERROR 1054 (42S22)** 则使用 mysql>update mysql.user set authentication_string=password(‘123456‘) where user=‘root‘ and Host =‘localhost‘;

or update mysql.user set Password=password (' 123456 ') where user= ' root ';

 8. mysql>flush privileges; #更新权限 9. 退出 quit。 10. 注销系统,再进入, 输入 mysql -u root -p 使用用户名root和刚才设置的新密码123456登录。

(3). When you know the root password,

方法1: 用SET PASSWORD命令 首先登录MySQL。 格式:mysql> set password for 用户名@localhost = password(‘新密码‘); 例子:mysql> set password for [email protected] = password(‘123‘); 方法2:用mysqladmin 格式:mysqladmin -u用户名 -p旧密码 password 新密码 例子:mysqladmin -uroot -p123456 password 123 方法3:用UPDATE直接编辑user表 首先登录MySQL。 mysql> use mysql; mysql> update user set password=password(‘123‘) where user=‘root‘ and host=‘localhost‘; mysql> flush privileges;

mysql5.7 when forgetting your password, change the root password

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