MySQL - External Access using root user

mysql.md

1. Edit /etc/mysql/my.cnf;

#bind-address = 127.0.0.1
bind-address  = 0.0.0.0

2. Restart MySQL;

sudo service mysql restart

3. Connect to MySQL;

mysql -u root -p mysql

4. Execute the query

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;

Thanks, Hugo!