medusa-store/docs/content/deployments/server/deploying-on-heroku.mdx

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# Deploy Your Medusa Backend on Heroku

In this document, you'll learn how to deploy your Medusa backend on Heroku. Heroku is a PaaS (Platform as a Service) that allows you to easily deploy your applications in the cloud.

Alternatively, you can use this button to deploy the Medusa backend to Heroku directly:

<a href="https://heroku.com/deploy?template=https://github.com/medusajs/medusa-starter-default/tree/feat/deploy-heroku" className="img-url">
  <img src="https://www.herokucdn.com/deploy/button.svg" alt="Deploy to Heroku" className="no-zoom-img" />
</a>

<div>
  <video width="100%" height="100%" playsinline autoplay muted controls>
    <source src="https://user-images.githubusercontent.com/59018053/154798681-37060f13-5248-47c5-97c5-81c06da301d4.mp4" type="video/mp4" />
  </video>
</div>

## Prerequisites

### Medusa Backend

It is assumed that you already have a Medusa backend installed locally. If you don’t, please follow the [quickstart guide](../../development/backend/install.mdx).

Furthermore, your Medusa backend should be configured to work with PostgreSQL and Redis. You can follow the [Configure your Backend documentation](../../development/backend/configurations.md) to learn how to do that.

### Needed Accounts

- A [Heroku](https://heroku.com/) account.

### Required Tools

- Git’s CLI tool. You can follow [this documentation to learn how to install it for your operating system](../../development/backend/prepare-environment.mdx#git).
- Heroku's CLI tool. You can follow [Heroku's documentation to learn how to install it for your operating system](https://devcenter.heroku.com/articles/heroku-cli).

---

## Deploy to Heroku

### 1. Login to Heroku from your CLI

Before you can create an app with Heroku, you must login with the CLI tool:

```bash
heroku login
```

Depending on your operating system, you must follow either the instructions in your terminal or a page in your browser will open.

### 2. Create an App with Heroku

In the root directory of your Medusa backend, run the following commands to create an app on Heroku and add it as a remote origin:

```bash
heroku create <APP_NAME>
heroku git:remote -a <APP_NAME>
```

Where `<APP_NAME>` is the name of the app you'll create. You can use any name you want.

### 3. Install Postgresql and Redis on Heroku

Medusa requires a Postgres database and a Redis instance to work. You can add those to your Heroku app using Add-ons.

:::note

If you don't have a payment method set up in your Heroku account, you'll be asked to enter your payment details when you try to install these addons.

:::

#### PostgreSQL

Add a Postgres add-on to your Heroku app with the following command:

```bash
heroku addons:create heroku-postgresql:mini
```

This uses Heroku Postgres's smallest plan. You can check out [the available plans and pricing of Heroku Postgres on Heroku's website.](https://elements.heroku.com/addons/heroku-postgresql#pricing)

#### Redis

Add a Redis instance to your Heroku app with the following command:

```bash
heroku addons:create stackhero-redis:ist-ebi1rc
```

This uses the lowest plan in Stackhero Redis. You can check out [the plans and pricing of Stackhero Redis on Heroku's website.](https://elements.heroku.com/addons/stackhero-redis#pricing)

### 4. Configure Environment Variables on Heroku

Medusa requires a set of environment variables to be configured. You can learn more about Medusa's configurations in the [Configure your Medusa backend](../../development/backend/configurations.md) document.

Run the following commands in the root directory of your Medusa backend to set some environment variables:

```bash
heroku config:set NODE_ENV=production
heroku config:set JWT_SECRET=your-super-secret
heroku config:set COOKIE_SECRET=your-super-secret-pt2
heroku config:set NPM_CONFIG_PRODUCTION=false
```

:::tip

Make sure to replace `your-super-secret` and `your-super-secret-pt2` with actual secrets in a production environment.

:::

#### Set Buildpack

Additionally, you need to set the buildpack to Node.js using the following command:

```bash
heroku buildpacks:set heroku/nodejs
```

#### Configure the Redis URL

Stackhero Redis adds the Redis URL under the environment variable `STACKHERO_REDIS_URL_TLS`. However, Medusa looks for the `REDIS_URL` environment variable when initializing the connection with Redis.

Retrieve the value of `STACKHERO_REDIS_URL_TLS` with the following command:

```bash
heroku config:get STACKHERO_REDIS_URL_TLS
```

This prints the value of the environment variable which is a Redis connection string.

Copy that value and use it to set the environment variable `REDIS_URL` with the following command:

```bash
heroku config:set REDIS_URL=<YOUR_REDIS_URL>
```

Where `<YOUR_REDIS_URL>` is the value you received from the previous command.

#### Configure the PostgreSQL Database URL

If you're using the Heroku PostgreSQL Add-on, it should configure the environment variable `DATABASE_URL`. In that case, you don't need to perform any additional actions.

However, if you use another add-on, make sure to set the environment variable `DATABASE_URL` to the PostgreSQL Database URL.

#### (Optional) Configure CORS Variables

Optionally, if you've deployed the admin dashboard and you want to ensure it can use the backend's REST APIs, you must set the following environment variable:

```bash
heroku config:set ADMIN_CORS=<YOUR_ADMIN_URL>
```

Where `<YOUR_ADMIN_URL>` is the URL of your admin dashboard.

Similarly, if you've deployed the storefront and you want to ensure it can use the backend's REST APIs, you must set the following environment variable:

```bash
heroku config:set STORE_CORS=<YOUR_STOREFRONT_URL>
```

Where `<YOUR_STOREFRONT_URL>` is the URL of your storefront.

### 5. Configure Medusa Backend

Before jumping into the deployment, you need to configure your Medusa backend to ensure it uses the previous environment variables and the recommended production configurations.

#### medusa-config.js

Update `module.exports` to include the following configurations:

```js
module.exports = {
  projectConfig: {
    redis_url: REDIS_URL,
    database_url: DATABASE_URL,
    database_type: "postgres",
    store_cors: STORE_CORS,
    admin_cors: ADMIN_CORS,
    database_extra:
      process.env.NODE_ENV !== "development"
        ? { ssl: { rejectUnauthorized: false } }
        : {},
  },
  plugins,
}
```

#### package.json

Update `scripts` to include the following scripts:

```json
"scripts": {
    "serve": "medusa start",
    "start": "medusa develop",
    "heroku-postbuild": "medusa migrations run",
    "prepare": "npm run build",
    "build": "babel src -d dist --extensions \".ts,.js\""
},
```

### 6. Launch your Medusa Backend

Finally, commit and push all changes to Heroku:

```bash
git add .
git commit -m "Deploy Medusa Backend on Heroku"
git push heroku HEAD:master
```

This triggers a redeploy of the Medusa backend with all the new configurations.

## Test your Backend

To test your backend, run the following command to retrieve the backend's URL:

```bash
heroku apps:info -a <APP_NAME>
```

Where `<APP_NAME>` is the name of the app. You should see as the output a bunch of info of the app.

The backend's URL is available under "Web URL". You can copy it and perform requests to it to test it out.

For example, you can send a request to `<YOUR_BACKEND_URL>/store/products` and you should receive a JSON response with the products in your store.

### Troubleshooting: Inspect Build Logs

If an error occurs during the deployment, you can explore your Heroku app build logs using the following command in the root directory of your Medusa backend:

```bash
heroku logs -n 500000 --remote heroku --tail -a <APP_NAME>
```

Where `<APP_NAME>` is the name of the app.

---

## Run Commands on Your Backend

To run commands on your backend, you can use the following command:

```bash
heroku run -a <APP_NAME> -- <COMMAND>
```

Where `<APP_NAME>` is the name of the app and `<COMMAND>` is the command you want to run.

For example, to create an admin user you can run the following command:

```bash
heroku run -a <APP_NAME> -- medusa user -e "<EMAIL>" -p "<PASSWORD>"
```

Where `<APP_NAME>` is the name of your Heroku app, and `<EMAIL>` and `<PASSWORD>` are the credentials you want to use to log in to the Medusa admin dashboard.

---

## Add Environment Variables

You’ll likely need to add environment variables later such as Admin Cross-Origin Resource Sharing (CORS) and Store CORS variables.

To set or change an environment variable's value, you can use the following command:

```bash
heroku config:set <ENV_NAME>=<ENV_VALUE> -a <APP_NAME>
```

Where `<APP_NAME>` is the name of your Heroku app, `<ENV_NAME>` is the name of the environment variable, and `<ENV_VALUE>` is the value.

---

## See Also

- [Deploy your Medusa admin](../admin/index.mdx)
- [Deploy your storefront](../storefront/index.mdx)