File size: 3,664 Bytes
0a84888 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | ---
#https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4
contentType: tutorial
---
# Hosting n8n on Heroku
This hosting guide shows you how to self-host n8n on Heroku. It uses:
- [Docker Compose](https://docs.docker.com/compose/){:target="_blank" .external-link} to create and define the application components and how they work together.
- [Heroku's PostgreSQL service](https://devcenter.heroku.com/categories/heroku-postgres){:target="_blank" .external-link} to host n8n's data storage.
- A **Deploy to Heroku** button offering a one click, with minor configuration, deployment.
--8<-- "_snippets/self-hosting/warning.md"
--8<-- "_snippets/self-hosting/installation/latest-next-version.md"
## Use the deployment template to create a Heroku project
The quickest way to get started with deploying n8n to Heroku is using the **Deploy to Heroku** button:
[](https://dashboard.heroku.com/new?template=https://github.com/n8n-io/n8n-heroku/tree/main)
This opens the **Create New App** page on Heroku. Set a name for the project, and choose the region to deploy the project to.
### Configure environment variables
Heroku pre-fills the configuration options defined in the `env` section of the `app.json` file, which also sets default values for the environment variables n8n uses.
You can change any of these values to suit your needs. You must change the following values:
- **N8N_ENCRYPTION_KEY**, which n8n uses to [encrypt user account details](/hosting/configuration/environment-variables/deployment.md) before saving to the database.
- **WEBHOOK_URL** should match the application name you create to ensure that webhooks have the correct URL.
### Deploy n8n
Select **Deploy app**.
After Heroku builds and deploys the app it provides links to **Manage App** or **View** the application.
/// note | Heroku and DNS
Refer to the [Heroku documentation](https://devcenter.heroku.com/categories/networking-dns){:target="_blank" .external-link} to find out how to connect your domain to a Heroku application.
///
## Changing the deployment template
You can make changes to the deployment template by forking the [repository](https://github.com/n8n-io/n8n-heroku){:target=_blank .external-link} and deploying from you fork.
### The Dockerfile
By default the Dockerfile pulls the latest n8n image, if you want to use a different or fixed version, then update the image tag on the top line of the `Dockerfile`.
### Heroku and exposing ports
Heroku doesn't allow Docker-based applications to define an exposed port with the `EXPOSE` command. Instead, Heroku provides a `PORT` environment variable that it dynamically populates at application runtime. The `entrypoint.sh` file overrides the default Docker image command to instead set the port variable that Heroku provides. You can then access n8n on port 80 in a web browser.
/// note | Docker limitations with Heroku
[Read this guide](https://devcenter.heroku.com/articles/container-registry-and-runtime#unsupported-dockerfile-commands){:target="_blank" .external-link} for more details on the limitations of using Docker with Heroku.
///
### Configuring Heroku
The `heroku.yml` file defines the application you want to create on Heroku. It consists of two sections:
* `setup` > `addons` defines the Heroku addons to use. In this case, the PostgreSQL database addon.
* The `build` section defines how Heroku builds the application. In this case it uses the Docker buildpack to build a `web` service based on the supplied `Dockerfile`.
## Next steps
--8<-- "_snippets/self-hosting/installation/server-setups-next-steps.md"
|