These instructions only apply for free self-hosting features, not Enterprise features (feature list).

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Server URL, Callback URL & Custom Domains

Add server environment variables for the instance URL and port (in the .env file or directly on Heroku/Render):

NANGO_SERVER_URL=<INSTANCE-URL>
SERVER_PORT=<PORT>

The resulting callback URL for OAuth will be <INSTANCE-URL>/oauth/callback.

You can customize the callback URL by updating “Callback URL” field in the “Environment Settings” tab in the Nango admin.

If you are using a custom domain, you should change the NANGO_SERVER_URL server environment variable accordingly (in the .env file or directly on Heroku/Render).

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Persistent storage

If deploying with Docker Compose (e.g. AWS, GCP, DO), the database is bundled in a docker container with local storage using Docker registries. This is a no-go for production.

Connect Nango to an external Postgres DB that lives outside the docker setup to mitigate this.

To do so, modify the default values of the following server env variables (in the .env file):

NANGO_DB_USER=<REPLACE>
NANGO_DB_PASSWORD=<REPLACE>
NANGO_DB_HOST=<REPLACE>
NANGO_DB_PORT=<REPLACE>
NANGO_DB_NAME=<REPLACE>
NANGO_DB_SSL=true

Deploying with Render or Heroku automatically generates a persistent database connected to your Nango instance.

For Render, the environment variables above are automatically set for you. For Heroku, check out our Heroku docs page for specific instructions.

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Securing your instance

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Securing the dashboard

By default, the dashboard of your Nango instance is open to anybody who has access to your instance URL.

You can secure it with Basic Auth by setting the following environment variables and restarting the server:

NANGO_DASHBOARD_USERNAME=<PICK-A-USERNAME>
NANGO_DASHBOARD_PASSWORD=<PICK-A-PASSWORD>

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Encrypt sensitive data

You can enforce encryption of sensitive data (tokens, secret key, app secret) using the AES-GCM encryption algorithm. To do so, set the following environment variable to a randomly generated 256-bit base64-encoded key:

NANGO_ENCRYPTION_KEY=<ADD-BASE64-256BIT-KEY>

Once you restart the Nango server, the encryption of the database will happen automatically. Please note that, at the current time, you cannot modify this encryption key once you have set it.

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Custom websockets path

The Nango server serves websockets from the / path by default for use by @nangohq/frontend during the login flow. If you want more isolation between websockets and the dashboard (also served from /), then you can set the NANGO_SERVER_WEBSOCKETS_PATH environment variable to serve websockets from a different path:

NANGO_SERVER_WEBSOCKETS_PATH=</YOUR-WEBSOCKETS-PATH>

If you do set this variable to a different path, you will need to configure the websocketsPath parameter when initializing the Nango object in the @nangohq/frontend SDK:

import Nango from '@nangohq/frontend';

let nango = new Nango({ host: 'https://<YOUR-NANGO-INSTANCE>', websocketsPath: '</YOUR-WEBSOCKETS-PATH>' });

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Telemetry

We use telemetry to understand Nango’s usage at a high-level and improve it over time.

Telemetry on self-hosted instances is very light by default. We only track core actions and do not track sensitive information.

You can disable telemetry by setting the env var TELEMETRY=false (in the .env file or directly on Heroku/Render).

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