Login using SSH, then run
mysql -uroot -p
mysql> CREATE USER 'root'@'%' IDENTIFIED BY 'YourSecurePassword';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';
mysql> FLUSH PRIVILEGES;
Login using SSH, then run
mysql -uroot -p
mysql> CREATE USER 'root'@'%' IDENTIFIED BY 'YourSecurePassword';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';
mysql> FLUSH PRIVILEGES;