Install docker-compose at first.
Clone this repository.
In the folder, run:
'docker-compose up'
Then three containers will be running: 'prometheus', 'node-exporter' and 'grafana'
'prometheus' is the database and data collector.
'Node exporter' is collection local system resource usage.
'Grafana' is the visualizer.
In your browser, access 'localhost:3000', then login 'Grafana' and set configurations.