Port 1880 does not work in Docker on a Raspi 400

General
1

I an trying to install nodered over docker in Raspi 400. I have to use the command "docker run..." with all options as recommended in GitHub. Including "-p 1880:1880".

But when I run this command and try to see the nodered using "docker ps", I receive all correct data except Ports where I can see nothing.

When I try to connect to nodered via browser using "http://IP_number:1880" an error occurs telling me that the Raspi is not responding.

The Raspi IP is correct and working properly. Any suggestions to fix this problem?. Thanks a lot in advance.

2

Does the base OS of the pi already have an instance of node-red listening on 1880?

3

I have a brand new Raspi where I have installed only MQTT.

4

It is going to be an error in your Docker config, I'm pretty certain of that.

I don't use Docker just to run node-red so I can't help with that but we regularly see docker issues in this forum.

I'm afraid that you are going to have to go back through your docker config carefully. Where I do use Docker, I always use docker-compose to configure things, maybe that will help?

5

Can you share the command line instructions that you are using

6

The command is:

docker run --name nodered -itd --restart=always -p 1880:1880 -v /docker/nodered/data:/data nodered/node-red

And when the docker is created is always restarting every few seconds. This is an added problem.

Thank you un advance.

7

That is why you get the Not Responding message. Look in the docker log to see why it is restarting.

8

I appreciate any help to see where is that log and which command may I use.

Thanks a lot.

9

No idea, sorry, I don't use docker. Do you have a reason for using it? It adds complexity (as you are finding out).

10

Docker Logging: 101 Guide to Logs, Best Practices & More - Sematext

11

I will have a look later today - on the surface the command looks fine however there is clearly a problem

12

Open a terminal and enter

docker logs --follow --until=10m nodered

Keep it running and check where/why it restarts

13

This is:
docker run --name nodered -itd --restart=always -p 1880:1880 -v /docker/nodered/data:/data nodered/node-red

14

As soon as I execute that command, I receive this repeated several times, and stop:

Fatal error in , line 0

unreachable code

#FailureMessage Object: 0xbebea53c
./entrypoint.sh: line 14: 7 Trace/breakpoint trap (core dumped) /usr/local/bin/node $NODEOPTIONS node_modules/node-red/red.js --userDir /data $FLOWS

May this indicate a mayor error in Docker or something else? Thanks a lot.

15

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.