What should I do if I forget my password in mysql 5.7?

Mysql5.7 Forgot password solution: 1. Modify the parameter file and skip password verification; 2. Modify the password field; 3. Restart mysql through "service mysqld restart".

The operating environment of this article: windows7 system, mysql version 5.7, Dell G3 computer.

mysql 5.7 What should I do if I forget my password?

How to deal with forgotten passwords in mysql5.7

[Explanation] When MySQL5.7 forgets the root password, the handling method is somewhat different from the previous version. , here is the summary:

[1] Modify the parameter file to skip password verification

vim /etc/my.cnf
# 在 [mysqld] 中加上一行跳过权限限制
skip-grant-tables
# 保存退出 重启mysql服务
service mysqld restart

[2] Modify the password field

# 用户登录
mysql -uroot -p (直接点击回车，密码为空)
    
# 但是在5.7版本中不存在password字段，所有我们要用以下修改进行重置密码
update mysql.user set authentication_string=password('123456') where user='root';
# 刷新权限
flush privileges;

[3] The first modified configuration Delete skip-grant-tables in the file my.cnf and restart mysql

service mysqld restart

[4] When you log in to mysql, you will find that

ERROR 1820 (HY000): You must reset your password using ALTER USER statement;
# 这是提示你需要修改密码 当你执行了
SET PASSWORD = PASSWORD('root');
# 如果出现
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
# 你需要执行两个参数来把mysql默认的密码强度的取消了才行 当然也可以把你的密码复杂度提高也行啊
set global validate_password_policy=0; 
set global validate_password_mixed_case_count=2;

[5] will appear when you execute the command. After the above operations, the password change is completed;

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