Installing Node-RED on Arch Linux

Node-RED is a popular open-source programming tool that allows you to visually create web applications and process data. This tutorial will guide you through the steps to install and set up Node-RED on Arch Linux.

Prerequisites

Before installing Node-RED, you need to ensure that you have the following components installed on your Arch Linux system:

• Node.js (version 12 or later)
• npm (Node.js Package Manager)

If you do not have these components installed, you can install them using the following command:

sudo pacman -S nodejs npm

Installing Node-RED

Once you have Node.js and npm installed on your system, you can proceed with the installation of Node-RED using npm:

sudo npm install -g --unsafe-perm node-red

The --unsafe-perm flag is required to ensure that the installation process succeeds on Arch Linux.

Starting Node-RED

To start Node-RED, simply run the following command:

node-red

This will start the Node-RED server, and you should see the following output:

Welcome to Node-RED
===================

14 Sep 11:05:22 - [info] Node-RED version: v1.2.2
14 Sep 11:05:22 - [info] Node.js version: v14.9.0
14 Sep 11:05:22 - [info] Linux 5.6.7-arch1-1 x64 LE
14 Sep 11:05:22 - [info] Loading palette nodes
14 Sep 11:05:23 - [info] UI started at /ui
14 Sep 11:05:23 - [warn] ------------------------------------------------------
14 Sep 11:05:23 - [warn] [node-red-contrib-home-assistant-websocket/homeassistant] Error: Connection refused to Home Assistant, retrying in 10 seconds...
14 Sep 11:05:23 - [warn] ------------------------------------------------------
14 Sep 11:05:23 - [info] Settings file  : /home/user/.node-red/settings.js
14 Sep 11:05:23 - [info] Context store  : 'default' [module=memory]
14 Sep 11:05:23 - [info] User directory : /home/user/.node-red
14 Sep 11:05:23 - [warn] Projects disabled : editorTheme.projects.enabled=false
14 Sep 11:05:23 - [info] Flows file     : /home/user/.node-red/flows.json
14 Sep 11:05:23 - [info] Server now running at http://127.0.0.1:1880/
14 Sep 11:05:23 - [info] Waiting for missing types to be registered:
14 Sep 11:05:23 - [info]  - homeassistant-state
14 Sep 11:05:23 - [info]  - homeassistant-service
14 Sep 11:05:23 - [info]  - homeassistant-triggers

Here, Node-RED is running on http://127.0.0.1:1880/

Conclusion

Congrats! You have successfully installed Node-RED on your Arch Linux system. You can now start creating your Node-RED web application using the visual programming interface.

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