Create a database user through the MySQL CLI

Through the mysql command line, this is accomplished by running the following commands.

In SSH, type “mysql” to access the mysql command line. Then type:

GRANT ALL PRIVILEGES
ON test_database.*
TO username@domain
IDENTIFIED BY 'password';
Where:

test_database is the database you created above.

username is the MySQL login to create

domain is the domain you’ll be connecting from — usually localhost, use “%” (double quote, percent, double quote) for any remote host, or specify a specific domain.

password is your mysql password to create enclosed in single quotes.

For example:
GRANT ALL PRIVILEGES
ON forum2_database.*
TO admin_user@localhost
IDENTIFIED BY 'forum911';