The server requested authentication method unknown to the client [caching_sha2_password]

database related logos

This time i got this PHP error after upgrading my MYSQL from version 5 to 8. Error says:

The server requested authentication method unknown to the client [caching_sha2_password]

This is because of the changing of default authentication password mechanism from previous MySQL to newest MySQL 8. The newest version uses an authentication plugin called caching_sha2_password meanwhile the older version is mysql using native password. So I guess it's a security thing, but don’t worry the older version I believe is already secure enough, you just need to make your password really strong (for your production server).

So if you execute SQL query below

select User,plugin from mysql.user ;


You will see what the plugin is being used for the user password, something like

+------------------+-----------------------+
| User             | plugin                |
+------------------+-----------------------+
| root             | caching_sha2_password |
+------------------+-----------------------+


So the easiest way to solve this problem is by just alter user password plugin back to native, do this by changing your my.ini configuration under [mysqld] block, add or change:

[mysqld]
default-authentication-plugin=mysql_native_password


Then restart MySQL service. Now you have one more thing to do, to alter the existing user plugin with native_password. Just do this alter command:

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '1234';
flush privileges;


You can change your root user with the desired Mysql password, I am just using the simplest 1234 as my password because it’s the most convenient just for local development, not production.

Now if you execute SQL query : select User,plugin from mysql.user; one more time, then it will show its plugin changed to mysql_native_password.

Comments

Popular posts from this blog

Is Nox Player a Malware? Nox Android Emulator

ERROR 1348 Column Password Is Not Updatable When Updating MySQL Root Password

ASUS Battery Health Charging Software To Make Your Battery Life Longer

How To Uninstall Angular CLI, The Angular Framework

Flutter AppBar, With Icon, Title and Actions Link