He opened a fresh terminal window and typed:

He rebooted the Ubuntu server.

As with the package manager method, stop the Observium services:

Will you be monitoring , Linux/Windows servers , or Docker containers ?

Open your crontab for the user that runs Observium (usually root or a specific observium user):

You need to remove the database and the dedicated user created during setup. Stack Overflow Log in to your database: sudo mysql -u root -p Drop the database: DROP DATABASE observium; Remove the user: DROP USER 'observium'@'localhost'; Exit the prompt: Stack Overflow 4. Cleanup Web Server Configurations

Then, exit the MySQL shell: