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, only the rules of mysql can be modified.

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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