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Reference Guidance

https://medium.com/@jasonrbodie/how-to-install-mysql-on-ubuntu-24-04-bfd11f73224b

Install or Uninstall MySQL

sudo apt update
sudo apt install mysql-server-8.0
sudo apt purge mysql-server-8.0

Start or Stop MySQL

sudo systemctl enable mysql.service
sudo systemctl start mysql.service
sudo systemctl stop mysql.service
sudo systemctl restart mysql.service

Initialize after First Installation

sudo mysql_secure_installation

Set Default Password

sudo mysql
SET GLOBAL validate_password.length=9;
SET GLOBAL validate_password.policy=LOW;
ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY '123456789';
exit
mysql -u root -p
123456789