Setting up n8n on Raspberry Pi. Able to access localhost, but not from an ip address

[Kenif_LAU]

I would like to set up n8n using Docker from my Raspberry Pi.

It works when I visit http://127.0.0.1:5678 (from Raspberry Pi)

However, it prompted error when I visit http://192.168.155.2:5678 (from Raspberry Pi)

I followed instructions - n8n-hosting/docker-compose/withPostgres at main · n8n-io/n8n-hosting · GitHub

Here is my docker compose file

version: '3.8'

volumes:
  db_storage:
  n8n_storage:

services:
  postgres:
    image: postgres:16
    restart: always
    environment:
      - POSTGRES_USER
      - POSTGRES_PASSWORD
      - POSTGRES_DB
      - POSTGRES_NON_ROOT_USER
      - POSTGRES_NON_ROOT_PASSWORD
    volumes:
      - db_storage:/var/lib/postgresql/data
      - ./init-data.sh:/docker-entrypoint-initdb.d/init-data.sh
    healthcheck:
      test: ['CMD-SHELL', 'pg_isready -h localhost -U ${POSTGRES_USER} -d ${POSTGRES_DB}']
      interval: 5s
      timeout: 5s
      retries: 10

  n8n:
    image: docker.n8n.io/n8nio/n8n
    restart: always
    environment:
      - DB_TYPE=postgresdb
      - DB_POSTGRESDB_HOST=postgres
      - DB_POSTGRESDB_PORT=5432
      - DB_POSTGRESDB_DATABASE=${POSTGRES_DB}
      - DB_POSTGRESDB_USER=${POSTGRES_NON_ROOT_USER}
      - DB_POSTGRESDB_PASSWORD=${POSTGRES_NON_ROOT_PASSWORD}
    ports:
      - 5678:5678
    links:
      - postgres
    volumes:
      - n8n_storage:/home/node/.n8n
    depends_on:
      postgres:
        condition: service_healthy

I also turned off the firewall from my Raspberry Pi 5 and the result still the same.

Could someone able to provide me some advice? Many thanks!

[Parintele_Damaskin]

Docker ports mapping in theory should be good only the n8n ports.

But what about n8n env variables.

N8N_HOST=0.0.0.0 or N8N_HOST=

N8N_LISTEN_ADDRESS=0.0.0.0

Later it may be useful WEBHOOK_URL as well, if you don’t use proxy .

[AlexS1]

Last time I exposed my Raspberry Pi on the internet – there were a lot of hackers trying to hack into it every day. Maybe don’t turn off your firewall.

[Kenif_LAU]

@Parintele_Damaskin

N8N_HOST

Thanks @Parintele_Damaskin and @AlexS1 for your input.

I had already tried n8n host, web hook url, listen address , and the result still the same…

Now it finally work by using Cloudflare Tunnels… I just feel a bit wired… it should also work on the machine IP address…..