You can also SSH into your instance and find the login credential using the following command.

$ cat /home/ec2-user/credentials
/////////////////////////credentials info ///////////////////////// — — MariaDB
 — — — User : root
 — — — Password : ****************
////////////////////////////////////////////////////////////////

If you find ‘setting error’ message, please try to set the root password according to following documentation below.

Tutorial: Install a LAMP Web Server on Amazon Linux 2 | 2. Run mysql_secure_installation.

If MySQL database is not already installed, use this command to install.

 $ sudo mysql_secure_installation