I plan to have multiple node-red servers running. There will be, most likely, a main server that needs to collect data from flows running on the other servers. Any pointers to reading on setting up such a thing? Or, hints, etc.?

typically things like providing data on my solar hot water system. But other things like home sub-systems control and monitoring.

Use MQTT to send info back and forth. Here is a link to a description of MQTT https://www.hivemq.com/mqtt-essentials/

[image] zenofmud: Use MQTT to send info back and forth +1 All my Pi running Node-RED use MQTT to pass info

Definitely MQTT. I have 3 Node-red installs (Ubuntu, Pi3, Bluemix), and they all talk via MQTT (Mosquitto), as do some of my other home-control devices. It works flawlessly publishing JSON (as strings) - I'm not sure how easy it would be if you had binary content coming from your devices.

Node-RED

Node-RED Forum

Communication between node-red servers

General

ghayne 21 July 2018 18:03 2

What will the servers be doing?

Topic		Replies	Views
communication between node red servers General	10	676	6 May 2024
Connect two node-reds General	11	2820	4 September 2020
One node-red device to ctl another node-red device General	19	2008	30 May 2018
Advice on communication between multiple Node-RED instances (or external apps) General	11	344	31 October 2025
Two separate instances of MQTT and Node Red General	8	384	19 November 2022

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Communication between node-red servers

Related topics