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Deploy Your Medusa Server on Heroku

In this document, you'll learn how to deploy your Medusa server 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 server to Heroku directly:

Deploy

Prerequisites

Medusa Server

It is assumed that you already have a Medusa server installed locally. If you don’t, please follow the quickstart guide.

Furthermore, your Medusa server should be configured to work with PostgreSQL and Redis. You can follow the Configure your Server documentation to learn how to do that.

Needed Accounts

Required Tools

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:

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 server, run the following commands to create an app on Heroku and add it as a remote origin:

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.

tip

In this section, the add-ons are used with a free plan. It's highly recommended that you don't use a free plan in a production environment.

PostgreSQL

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

note

This add-on is added with a free plan. However, Heroku might require you to add a payment method to proceed.

heroku addons:create heroku-postgresql:hobby-dev

This uses the free plan of Heroku Postgres. Make sure to check out more information regarding the plans and pricing of Heroku Postgres.

Redis

note

The Add-on used here for Redis is Upstash which is currently in beta. However, it provides a generous free plan. You can alternatively go for Stackhero but it does not have a free plan.

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

note

This add-on is added with a free plan. However, Heroku might require you to add a payment method to proceed.

heroku addons:create upstash-redis

This uses the free plan of Upstash. Make sure to check out more information regarding the plans and pricing of Upstash.

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 Server document.

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

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:

heroku buildpacks:set heroku/nodejs

Configure the Redis URL

Upstash adds the Redis URL under the environment variable UPSTASH_REDIS_URL. However, Medusa looks for the REDIS_URL environment variable when initializing the connection with Redis.

Retrieve the value of UPSTASH_REDIS_URL with the following command:

heroku config:get UPSTASH_REDIS_URL

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:

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 server's REST APIs, you must set the following environment variable:

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 server's REST APIs, you must set the following environment variable:

heroku config:set STORE_CORS=<YOUR_STOREFRONT_URL>

Where <YOUR_STOREFRONT_URL> is the URL of your storefront.

5. Configure Medusa Server

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

medusa-config.js

Update module.exports to include the following configurations:

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:

"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 Server

Finally, commit and push all changes to Heroku:

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

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

Test your Server

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

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 server'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_SERVER_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 server:

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

Where <APP_NAME> is the name of the app.

Run Commands on Your Server

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

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:

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:

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.

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