ERROR 1045 (28000) Access denied for user 'root'@'localhost'Solution

Origin of event

The night before yesterday was fine. When I turned on the computer the next day and was about to start writing junk code, I found that the project started reporting an error. I looked at it and found that the database could not be connected. I was confused and could only search on csdn.Guy's article, finally solved the problem.The following process is the process of solving the problems that occurred when I implemented the Daxie tutorial.My mysql version is as follows: mysql-8.0.27-winx64.

Action

First, create the first cmd window and close the mysql service

Second, create a second cmd window (open with administrator permissions), skip permission verification

mysqld --console --skip-grant-tables --shared-memory

Third, create a third cmd window (open with administrator privileges), enter mysql without a password, and clear the password

When you see Enter passowrd, you just ignore it, just press Enter

update user set authentication_string='' where user='root';

Fourth, close the previous cmd window (open with administrator privileges), enter mysql without a password, and reset the password

Everything went well before, when I want to change the password, gave me an error again, saying that my password is too simple, just kidding, "12345678" is still simple, forget it, I can only modify the rules of mysql.

Open configuration

found the policy to be medium

Then change it to low-level

set global validate_password.policy=0;

execute mysql again> show variables like “%validate%”; found the modification completed

Finally, you can change the password,Start

Ah this, another error is reported, my mind is brokenah.Finally, after checking other information, I found a new modification method.

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '12345678';

After modification, you can log in normally

Reference Blog

https://blog.csdn.net/m0_46278037/article/details/113923726spm=1001.2014.3001.5502

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