Accessing node-red on port 1880 through public url with nginx or caddy

Product support
1

Hello, I’m trying to use the public device url to access other services on my device using caddy, but it just won’t load the /nodered page and there are no errors. If anyone could give any suggestions that would be great…

my files:

part of my docker-compose:

node-red:
    build: ./node-red
    ports:
      - '1880:1880'
    devices:
      - '/dev/mem:/dev/mem'
      - '/dev/gpiomem:/dev/gpiomem'
      - '/dev/i2c-1:/dev/i2c-1'
    restart: always
    volumes:
      - 'ftpdata:/data'
    privileged: true
    network_mode: host
    labels:
      io.balena.features.supervisor-api: '1'

 
   caddy:
    build: ./caddy
    restart: unless-stopped
    network_mode: host
    privileged: true
    ports:
      - '80:80'
      - '443:443'
    volumes:
      - caddy_data:/data
      - caddy_config:/config

dockerfile:

  FROM caddy:2.6.4

# Copy Caddyfile to /etc/caddy/Caddyfile
COPY Caddyfile /etc/caddy/Caddyfile

# Format the Caddyfile
RUN caddy fmt --overwrite /etc/caddy/Caddyfile

Caddyfile:

:80 {
    redir https://{host}{uri}
}

:443 {
    tls internal
    reverse_proxy /nodered/* http://localhost:1880
}
1 Like
2

Hello @cheezymcsquibble

What error do you get here? Could you please share more?

I’m happy to try to reproduce tomorrow!

3

the page doesn’t load, only a ‘too many redirects’ is shown. Interesting detail: if I let the port 80 forward directly to localhost:1880, WITHOUT using the /nodered/* path, then it will load node-red successfully. But this isn’t what I’m looking for, because I have multiple services that I need to access. Could it be that the balena public url doesn’t allow path handling somehow?

4

@mpous did you manage to reproduce it?

5

No i couldn’t @cheezymcsquibble

do you have a dummy repo that i can test?

Thanks!

6

I managed to do it using this post: Add nginx reverse proxy - #3 by ajlennon

The trick is to make sure every service’s base url has to be changed to accept the subfolder, so for node-red the settings.js had to be changed to include:

httpAdminRoot: '/node-red',

Also the Traefik solution is more practical because I only need to change the docker compose file for each change. With caddy I need to purge my data each time and upload a new caddy file.

1 Like