Grafana snap which come with the MQTT plugin and all the required configurations to run the IoT Device nodered demo. The snap is supposed to be installed on a local pc. Once installed, point your browser to http://localhost:3000 to access the grafana dashboard. The Grafana snap includes a Data source configured to connect to hivemq public MQTT broker. To change the broker, login to grafana with admin/admin and go to "Data Sources/MQTT". The grafana.ini file is located in $SNAP_DATA/conf/grafana.ini. Edit with root permissions to change the configuration (e.g. to change the grafana http port, search for "http_port" and change the port accordingly. The snap provides a content interface slot called "writable". The "writable" slot allows r/w on $SNAP_DATA/conf. Tipical usage is to add/modify a custom grafana.ini file. To connect to the interface, your snap should declare a "writable" slot as described below: plugs: writable: interface: content content: writable-data target: <your target dir> More info on content interface here: https://snapcraft.io/docs/content-interface

Use the following command to connect the interface: snap connect <your-snap-name>:writable grafana-nodered-demo:writable