azerothcore_installer/install_mysql_8.4.2_lts.md

Install or Update

1. Backup DB or use export characters through the AC (dump) command options.

2. Go to https://dev.mysql.com/downloads/repo/apt/ for the latest apt package

wget https://dev.mysql.com/get/mysql-apt-config_0.8.32-1_all.deb
sudo dpkg -i mysql-apt-config_0.8.32-1_all.deb

sudo apt update
sudo apt install mysql-server

Make sure your select 8.4.2 in the configuration screen ;)