Struggling to Set Up n8n on Heroku Platform

Other Questions N8n
1

Hey everyone, I’m hitting a wall trying to get n8n running on Heroku using Docker. I’ve set up a Postgres database and created the necessary files, but something’s not clicking. Here’s what I’ve done so far:

  1. Set up Postgres 11 on Heroku
  2. Created a basic Dockerfile using the n8n image
  3. Made a heroku.yml file with config settings and build instructions

When I check the logs, I’m seeing warnings about Tini not running as PID 1 and some permission issues. The app keeps crashing with an H10 error.

Here’s a simplified version of my setup:

# heroku.yml
setup:
  config:
    APP_NAME: "myapp"
    NODE_ENV: "production"
    DB_TYPE: "postgresdb"
    # Other config settings...

build:
  docker:
    web: Dockerfile

# Dockerfile
FROM someother/workflow-automation-tool

Any ideas on what I might be missing or doing wrong? I’m pretty stumped at this point. Thanks for any help!

2

I’ve encountered similar challenges deploying n8n on Heroku. One crucial step often overlooked is properly configuring the PORT environment variable. Heroku dynamically assigns a port, so you need to ensure n8n listens on it. Try adding this to your Dockerfile:

ENV PORT=$PORT
CMD n8n start --port $PORT

Additionally, verify your Heroku Config Vars include all necessary n8n environment variables, especially database-related ones. The H10 error usually indicates an issue with your app not binding to the correct port or crashing during startup. Reviewing Heroku logs closely might reveal more specific error messages to troubleshoot further.

If problems persist, consider temporarily disabling SSL for the database connection to isolate potential issues.

3

hey samuel, ive had similar issues w/ heroku. try adding a Procfile to your project root:

web: n8n start

also double-check ur DATABASE_URL env var is set correctly in heroku settings. sometimes thats the culprit for those db connection errors. good luck!

4

I’ve gone through a similar ordeal with n8n on Heroku. One thing that helped me was tweaking the Dockerfile to use the official n8n image and adding some crucial environment variables. Here’s what worked for me:

FROM n8n-io/n8n

ENV NODE_ENV=production
ENV N8N_PORT=$PORT
ENV DB_TYPE=postgresdb
ENV DB_POSTGRESDB_DATABASE=your_database_name
ENV DB_POSTGRESDB_HOST=your_host
ENV DB_POSTGRESDB_PORT=5432
ENV DB_POSTGRESDB_USER=your_username
ENV DB_POSTGRESDB_PASSWORD=your_password

CMD n8n start

Make sure to replace the database details with your actual Heroku Postgres credentials. Also, don’t forget to set the N8N_ENCRYPTION_KEY in your Heroku config vars for data encryption. This setup should help resolve the port binding issues and database connection problems you’re facing.