@javadroid

On the database server, when you create a MySQL User and Database, you need to set the host for the user to that of the connecting server (i.e. the server you’re running your Laravel app on).

For example, on the database sever, to create a user, we’d use:

grant all on dbname.* to 'dbuser'@'LARAVEL_SERVER_IP' identified by 'dbpass';

Where dbname is the database name, dbuser is the database username, dbpass is the database password, and LARAVEL_SERVER_IP is the IP of your server running the Laravel application.

@jtittle, @vijaykumarmaurya

Finally, I just found the result. On the database server, I create two users:

CREATE USER  'dbuser'@'localhost' identified by 'dbpass' ;

and

CREATE USER  'dbuser'@'%' identified by 'dbpass' ;

and then grants all privileges:

 GRANT ALL PRIVILEGES ON *.* TO 'dbuser'@'localhost' WITH GRANT OPTION;

and

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