Following the install instructions here:
Add the repo to /etc/apt/sources.list and install with apt-get:
deb https://packagecloud.io/grafana/stable/debian/ jessie main
Add key:
curl https://packagecloud.io/gpg.key | sudo apt-key add -
Update and install:
sudo apt-get update
sudo apt-get install grafana
Start up the server service:
sudo service grafana-server start
To start at boot:
sudo update-rc.d grafana-server defaults
Up!