Let's Add The API Key To The Pi:

wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -

Now Add The APT Repository To The Source List:

echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list

Let's Do A Update And Install Grafana:

sudo apt update
sudo apt install grafana

Now Enable Grafana Server On The Pi:

sudo /bin/systemctl enable grafana-server

Let's Start Grafana On The Pi:

sudo /bin/systemctl start grafana-server

Open Up A Browser Window And Use The IP Address
Of The Pi With Port 3000

192.168.x.x:3000

Default Username And Password Is:

UN: admin
PW: admin