Laravel throwing QueryException after update MySQL to 8.0

Question

After upgrading MySQL to version 8.0, Any attempt to migrate database throws exception indicating unknown authenticaion method

  [Illuminate\Database\QueryException]                                         
  SQLSTATE[HY000] [2054] The server requested authentication method unknown t  
  o the client (SQL: select * from information_schema.tables where table_sche  
  ma = wiki and table_name = migrations)                                       



  [PDOException]                                                               
  SQLSTATE[HY000] [2054] The server requested authentication method unknown t  
  o the client                                                                 



  [PDOException]                                                               
  PDO::__construct(): The server requested authentication method unknown to t  
  he client [caching_sha2_password]                                            

Answer 1

This is due to the fact that MySQL 8.0.4 has changed its default authentication mechanism to caching_sha2_password . ( second clause )

In order to make it authenticate with your .env DB_USERNAME and DB_PASSWORD follow this instructions:

• Add default-authentication-plugin=mysql_native_password to your my.cnf

  On CentOS/RHEL it's located on /etc/my.cnf .
  On Debian/Ubuntu, I do believe it's located on /etc/mysql .
  This will revert back the default authentication mechanism back to username password.

Login to your mysql and follow procedure

• Remove existing database user and recreate it.

  In order to remove the user:
  DROP USER yourUser@localhost; (with assumption your db is local)

• Create another user
  CREATE USER user@localhost IDENTIFIED BY 'yourpassword';
GRANT ALL PRIVILEGES ON dbName.* TO user@localhost;

• Flush privileges
  FLUSH PRIVILEGES;

Logout of mysql and run:

On Centos/RHEL: systemctl restart mysqld
On Debian/Ubuntu: systemctl restart mysql.service

I could get it up and running without database removal.

References:

• https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-4.html#mysqld-8-0-4-security
• https://mysqlserverteam.com/upgrading-to-mysql-8-0-default-authentication-plugin-considerations/
• https://github.com/laradock/laradock/issues/1392

Answer 2

on windows; terminate sqld from task manager, now from XAMPP control panel stop and restart MySQL.