Base version of the Node-RED internet of things graphical wiring tool packaged as an Ubuntu Snap, intended for multiple architectures.
Listens on port 1880 by default.
Note: the strict containerisation when running as a snap means that any nodes that try to shell out or spawn other commands (e.g. exec) will probably fail as they will not have access to system resources.
You can relax this by installing the snap in --classic mode but this is not advised. You do so at your own risk, etc.
ping: If you want to use the ping node you must manually connect the network-observe interface.
sudo snap connect node-red:network-observe
To build locally, modify the snapcraft.yaml as required, and then execute build_snap.sh
snap install node-red
When the snap is running you can view the Node-RED log using
journalctl -f -u snap.node-red*
You can also stop and restart the application by
snap disable node-red
snap enable node-red
Currently the ONLY serial support is for /dev/ttyS0 style ports. USB serial ports (hot-pluggable) are not supported by Snappy yet.
The settings.js and flows.json file are located in the /root/snap/node-red/current/ directory.
To install any extra nodes via command line you can (as root user)
cd ~/snap/node-red/current/
node-red.npm i node-red-contrib-my-great-node-name
The base port can be set by the $PORT environment variable, or in the settings.js file.