Hi, Is there a way to modify the topic of mqtt input nodes from one script ? and then do a full deployment . I did one script to modify topics in the flow file (from command line), but it’s necessary to stop node-red and then restart it for getting it working. (too long process). I am wondering i…

Hi, I tried the two ideas : from dceejay about using the environment variables. We can do use env_var into the nodes with the limitation that the content of variables will be the one at the node-red start time. If we modify the environment variables (using the same console where we started the …

knolleary 27 July 2018 19:22 6

The existing MQTT nodes do not provide a way to dynamically change their subscriptions.

This has recently been discussed here: Trigger a mqtt subscription

Topic		Replies	Views
Dynamic topic for mqtt input General	8	4429	15 May 2019
MQTT topic from .env General mqtt	7	253	19 April 2024
Interesting Mqtt Issue General	3	261	28 September 2020
MQTT-nodes with dynamic topics General mqtt	8	66	3 December 2024
Function to dynamically change the MQTT topic based on user input General	14	4072	19 September 2020

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.

Change mqtt-input node topic name

Related topics