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Version: v2.x

Connecting Hasura to a Crunchy Postgres Database


This guide explains how to connect a new or existing Crunchy Postgres database to a Hasura instance, either on Hasura Cloud or via one of our self-hosted solutions. If you're exploring Crunchy Postgres and are interested in migrating an existing Postgres database - such as from Heroku - check out their docs before continuing below.


If you plan on using Hasura Cloud, which we recommend, follow steps 1 and 2 below. If you're self-hosting a Hasura instance and already have a project running, skip to step 3.

Step 1: Sign up or log in to Hasura Cloud

Navigate to Hasura Cloud and sign up or log in.

Step 2: Create a Hasura Cloud project

On the Hasura Cloud dashboard, create a new project:

Create Hasura Cloud project

After the project is initialized successfully, click on Launch Console to open the Hasura Console in your browser.

On the Hasura Console, navigate to the Data tab and choose Connect Existing Database. Hasura will prompt you for a Postgres Database URL. We'll create this in the next step and then come back here.

Hasura Cloud database setup

Step 3: Create a Postgres DB on Crunchy

Log into Crunchy.

From your dashboard, click Create Cluster:

Crunchy dashboard

Fill in the necessary information and click Create Cluster:

Create a new cluster with Crunchy

After creating the cluster, you'll be redirected to its dashboard. Keep an eye on the Status row of the Cluster Overview card. While you can access your connection string immediately, the cluster must first be provisioned in order for Hasura to be able to connect.

Congratulations! You've now created a Postgres instance on Crunchy which you can use with Hasura GraphQL Engine. Follow the steps below to connect it to Hasura.

Step 4: Get the database connection URL

The structure of the database connection URL looks as follows:


Click on the Hasura card to see your connection string:

Create a new cluster with Crunchy

At the bottom of the instructions, we'll select Superuser (which will be postgres) for our role:

Create a new cluster with Crunchy

Copy the connection string:

Create a new cluster with Crunchy

Step 5: Finish connecting the database

Back on the Hasura Console, enter the database URL that we retrieved in the previous step:

Connect the database on Hasura Console

Then click Connect Database.


For security reasons, it is recommended to set database URLs as env vars and using the env vars to connect to the databases in place of the raw database URLs.

Voilà. You are ready to start developing.

Hasura Console

Next steps

Project actions

For more information on which Postgres features we support, check out this page.