To remove the MySQL root password, just run the following script right after installation:
On MySQL 5.7:
password=$(grep -oP 'temporary password(.*): \K(\S+)' /var/log/mysqld.log) mysqladmin --user=root --password="$password" password aaBB@@cc1122 mysql --user=root --password=aaBB@@cc1122 -e "UNINSTALL PLUGIN validate_password;" mysqladmin --user=root --password="aaBB@@cc1122" password ""
On MySQL 8.0:
password=$(grep -oP 'temporary password(.*): \K(\S+)' /var/log/mysqld.log) mysqladmin --user=root --password="$password" password aaBB@@cc1122 mysql --user=root --password=aaBB@@cc1122 -e "UNINSTALL COMPONENT 'file://component_validate_password';" mysqladmin --user=root --password="aaBB@@cc1122" password ""