Problem installing NR v5 on Siemens IOt2050

General
1

I've got a brand new siemens IOT2050 device with debian linux (v13.1) and I'm trying to get NR working.
(I'm not that familiar with linux, I'm an automation engineer working with Siemens PLC).

The installation of node red succeeded (following the script on the NR page), so V5 is now installed.
When I want to start node red, I get the error that node.js is an unsupported version (v20.19.2)
I installed the latest version of node.js (v24.17.0), rebooted the device and tried to start node red again >> same error.
When checking node.js version it gives me v24.17.0

Anea ideas how to solve this?

Thx

Kris

2

Welcome to the Forum!

I could be wrong, but, you might want try and run the Default install again, but with the option --node24 on the end

bash <(curl -sL ``https://github.com/node-red/linux-installers/releases/latest/download/install-update-nodered-deb``) --node24

This will ensure that Node-RED and Node.js are installed in the correct places to be able to 'see' each other. Node-RED V5 needs a minimum of Version 22 for Node.js

Node-RED 5.0 requires a minimum of Node.js 22.9.0 to run - it will not run anything earlier.

3

As Colin says, if node-red says v20 is installed but node -v shows v24 then you must have both versions installed in different places.

4

I tried to install with the node24 option, that went well, I no longer get the error about the node js version, thx for that.

But now I get this one when I start node red: nodered.
service: Referenced but unset environment variable evaluates to an empty string: NODE_RED_OPTIONS
env: ā€˜node-red-piā€™: No such file or directory
nodered.service: Main process exited, code=exited, status=127/n/a
nodered.service: Failed with result 'exit-code'.

I don't get why this installation is causing so much trouble, I installed node red previously on Pi without problems, probably siemens did something with the debian image for this device...

5

That is just a warning, again I think there is a fix coming. I believe that it is caused by an update in Debian that has made this a printable warning. To make it go away edit the file /usr/lib/systemd/system/nodered.service and add a line
Environment="NODE_RED_OPTIONS="
before
# uncomment the next line for a more verbose log output
or just uncomment the line
#Environment="NODE_RED_OPTIONS=-v"

The missing file is a problem though. In a command window what does this command show?
which node-red-pi

[Edit]
Also this command
which env

6

Hi,

Which node-red-pi >> /run/user/0/fnm_multishells/566_1782384720821/bin/node-red-pi

which env >> /usr/bin/env

I am not running this on a pi, but on a Siemens IOT2050 (probably some industrial version of a Pi)

7

I tried again from scratch with the standard image from siemens and ran all the scripts form the node red site (pi version and with --node24) and it works just fine :slight_smile:

1 thing I didn't do this time is changing the default name of the device...