[Observium] Setup the MySQL database - observium issue

Hi Team,

I have encounters with a problem while configuring observium. Following error is throwing while I am Setup the MySQL database and insert the default schema:

*Command executed :* root@ubuntu2:/opt/observium# ./discovery.php -u

*Out put error: *

MySQL Error 1045: Access denied for user 'USERNAME'@'localhost' (using password: YES)

Please advice me on this to proceed with the configuration.