Core18 based 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.
When installed as a Snap package, it will run in a secure container that does not have access to any external facilities that may be needed for you to use, such as:
gcc- needed to compile any binary components of nodes you want to installgit- needed if you want to use the Projects feature- direct access to gpio hardware
- access to any external commands your flows want to use with the Exec node (for example).
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
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 yet supported by Snap.
The settings.js and flows.json file are located in the /root/snap/node-red/current/ directory.
To install any extra nodes, the best option is to use the Manage Palette option in the editor. To install via the command line you can
sudo su -
cd /root/snap/node-red/current/
node-red.npm i --unsafe-perm node-red-contrib-my-great-node-name
snap restart node-red
The base port can be set by the $PORT environment variable, or in the settings.js file.
To re-build locally, modify the snapcraft.yaml as required, and then execute build_snap.sh