--- title: AWS RDS and Aurora description: Connect Hyperdrive to an AWS RDS or Aurora Postgres database instance. image: https://developers.cloudflare.com/dev-products-preview.png --- > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/hyperdrive/llms.txt > Use this file to discover all available pages before exploring further. [Skip to content](#%5Ftop) # AWS RDS and Aurora **Last reviewed:** over 2 years ago Connect Hyperdrive to an AWS RDS or Aurora Postgres database instance. This example shows you how to connect Hyperdrive to an Amazon Relational Database Service (Amazon RDS) Postgres or Amazon Aurora database instance. ## 1\. Allow Hyperdrive access To allow Hyperdrive to connect to your database, you will need to ensure that Hyperdrive has valid user credentials and network access. Note To allow Hyperdrive to connect to your database, you must allow Cloudflare IPs to be able to access your database. You can either allow-list all IP address ranges (0.0.0.0 - 255.255.255.255) or restrict your IP access control list to the [IP ranges used by Hyperdrive](https://developers.cloudflare.com/hyperdrive/configuration/firewall-and-networking-configuration/). Alternatively, you can connect to your databases over in your private network using [Cloudflare Tunnels](https://developers.cloudflare.com/hyperdrive/configuration/connect-to-private-database/). ### AWS Console When creating or modifying an instance in the AWS console: 1. Configure a **DB cluster identifier** and other settings you wish to customize. 2. Under **Settings** \> **Credential settings**, note down the **Master username** and **Master password** (Aurora only). 3. Under the **Connectivity** header, ensure **Public access** is set to **Yes**. 4. Select an **Existing VPC security group** that allows public Internet access from `0.0.0.0/0` to the port your database instance is configured to listen on (default: `5432` for PostgreSQL instances). 5. Select **Create database**. Warning You must ensure that the [VPC security group ↗](https://docs.aws.amazon.com/vpc/latest/userguide/vpc-security-groups.html) associated with your database allows public IPv4 access to your database port. Refer to AWS' [database server rules ↗](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/security-group-rules-reference.html#sg-rules-db-server) for details on how to configure rules specific to your RDS or Aurora database. ### Retrieve the database endpoint (Aurora) To retrieve the database endpoint (hostname) for Hyperdrive to connect to: 1. Go to **Databases** view under **RDS** in the AWS console. 2. Select the database you want Hyperdrive to connect to. 3. Under the **Endpoints** header, note down the **Endpoint name** with the type `Writer` and the **Port**. ### Retrieve the database endpoint (RDS PostgreSQL) For regular RDS instances (non-Aurora), you will need to fetch the endpoint and port of the database: 1. Go to **Databases** view under **RDS** in the AWS console. 2. Select the database you want Hyperdrive to connect to. 3. Under the **Connectivity & security** header, note down the **Endpoint** and the **Port**. The endpoint will resemble `YOUR_DATABASE_NAME.cpuo5rlli58m.AWS_REGION.rds.amazonaws.com` and the port will default to `5432`. ## 2\. Create your user Once your database is created, you will need to create a user for Hyperdrive to connect as. Although you can use the **Master username** configured during initial database creation, best practice is to create a less privileged user. To create a new user, log in to the database and use the `CREATE ROLE` command: Terminal window ``` # Log in to the database psql postgresql://MASTER_USERNAME:MASTER_PASSWORD@ENDPOINT_NAME:PORT/database_name ``` Run the following SQL statements: ``` -- Create a role for Hyperdrive CREATE ROLE hyperdrive; -- Allow Hyperdrive to connect GRANT CONNECT ON DATABASE postgres TO hyperdrive; -- Grant database privileges to the hyperdrive role GRANT ALL PRIVILEGES ON DATABASE postgres to hyperdrive; -- Create a specific user for Hyperdrive to log in as CREATE ROLE hyperdrive_user LOGIN PASSWORD 'sufficientlyRandomPassword'; -- Grant this new user the hyperdrive role privileges GRANT hyperdrive to hyperdrive_user; ``` Refer to AWS' [documentation on user roles in PostgreSQL ↗](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.PostgreSQL.CommonDBATasks.Roles.html) for more details. With a database user, password, database endpoint (hostname and port) and database name (default: `postgres`), you can now set up Hyperdrive. ## 3\. Create a database configuration To configure Hyperdrive, you will need: * The IP address (or hostname) and port of your database. * The database username (for example, `hyperdrive-demo`) you configured in a previous step. * The password associated with that username. * The name of the database you want Hyperdrive to connect to. For example, `postgres`. Hyperdrive accepts the combination of these parameters in the common connection string format used by database drivers: ``` postgres://USERNAME:PASSWORD@HOSTNAME_OR_IP_ADDRESS:PORT/database_name ``` Most database providers will provide a connection string you can directly copy-and-paste directly into Hyperdrive. * [ Dashboard ](#tab-panel-6416) * [ Wrangler CLI ](#tab-panel-6417) To create a Hyperdrive configuration with the Cloudflare dashboard: 1. In the Cloudflare dashboard, go to the **Hyperdrive** page. [ Go to **Hyperdrive** ](https://dash.cloudflare.com/?to=/:account/workers/hyperdrive) 2. Select **Create Configuration**. 3. Fill out the form, including the connection string. 4. Select **Create**. To create a Hyperdrive configuration with the [Wrangler CLI](https://developers.cloudflare.com/workers/wrangler/install-and-update/): 1. Open your terminal and run the following command. Replace `` with a name for your Hyperdrive configuration and paste the connection string provided from your database host, or replace `user`, `password`, `HOSTNAME_OR_IP_ADDRESS`, `port`, and `database_name` placeholders with those specific to your database: Terminal window ``` npx wrangler hyperdrive create --connection-string="postgres://user:password@HOSTNAME_OR_IP_ADDRESS:PORT/database_name" ``` 2. This command outputs a binding for the [Wrangler configuration file](https://developers.cloudflare.com/workers/wrangler/configuration/): * [ wrangler.jsonc ](#tab-panel-6414) * [ wrangler.toml ](#tab-panel-6415) JSONC ``` { "$schema": "./node_modules/wrangler/config-schema.json", "name": "hyperdrive-example", "main": "src/index.ts", // Set this to today's date "compatibility_date": "2026-05-08", "compatibility_flags": [ "nodejs_compat" ], // Pasted from the output of `wrangler hyperdrive create --connection-string=[...]` above. "hyperdrive": [ { "binding": "HYPERDRIVE", "id": "" } ] } ``` TOML ``` "$schema" = "./node_modules/wrangler/config-schema.json" name = "hyperdrive-example" main = "src/index.ts" # Set this to today's date compatibility_date = "2026-05-08" compatibility_flags = [ "nodejs_compat" ] [[hyperdrive]] binding = "HYPERDRIVE" id = "" ``` Note Hyperdrive will attempt to connect to your database with the provided credentials to verify they are correct before creating a configuration. If you encounter an error when attempting to connect, refer to Hyperdrive's [troubleshooting documentation](https://developers.cloudflare.com/hyperdrive/observability/troubleshooting/) to debug possible causes. ## 3\. Use Hyperdrive from your Worker Install the `node-postgres` driver: npm yarn pnpm bun ``` npm i pg@>8.16.3 ``` ``` yarn add pg@>8.16.3 ``` ``` pnpm add pg@>8.16.3 ``` ``` bun add pg@>8.16.3 ``` Note The minimum version of `node-postgres` required for Hyperdrive is `8.16.3`. If using TypeScript, install the types package: npm yarn pnpm bun ``` npm i -D @types/pg ``` ``` yarn add -D @types/pg ``` ``` pnpm add -D @types/pg ``` ``` bun add -d @types/pg ``` Add the required Node.js compatibility flags and Hyperdrive binding to your `wrangler.jsonc` file: * [ wrangler.jsonc ](#tab-panel-6418) * [ wrangler.toml ](#tab-panel-6419) JSONC ``` { // required for database drivers to function "compatibility_flags": [ "nodejs_compat" ], // Set this to today's date "compatibility_date": "2026-05-08", "hyperdrive": [ { "binding": "HYPERDRIVE", "id": "" } ] } ``` TOML ``` compatibility_flags = [ "nodejs_compat" ] # Set this to today's date compatibility_date = "2026-05-08" [[hyperdrive]] binding = "HYPERDRIVE" id = "" ``` Create a new `Client` instance and pass the Hyperdrive `connectionString`: TypeScript ``` // filepath: src/index.ts import { Client } from "pg"; export default { async fetch( request: Request, env: Env, ctx: ExecutionContext, ): Promise { // Create a new client instance for each request. Hyperdrive maintains the // underlying database connection pool, so creating a new client is fast. const client = new Client({ connectionString: env.HYPERDRIVE.connectionString, }); try { // Connect to the database await client.connect(); // Perform a simple query const result = await client.query("SELECT * FROM pg_tables"); return Response.json({ success: true, result: result.rows, }); } catch (error: any) { console.error("Database error:", error.message); return new Response("Internal error occurred", { status: 500 }); } }, }; ``` ## Next steps * Learn more about [How Hyperdrive Works](https://developers.cloudflare.com/hyperdrive/concepts/how-hyperdrive-works/). * Refer to the [troubleshooting guide](https://developers.cloudflare.com/hyperdrive/observability/troubleshooting/) to debug common issues. * Understand more about other [storage options](https://developers.cloudflare.com/workers/platform/storage-options/) available to Cloudflare Workers. ```json {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/hyperdrive/","name":"Hyperdrive"}},{"@type":"ListItem","position":3,"item":{"@id":"/hyperdrive/examples/","name":"Examples"}},{"@type":"ListItem","position":4,"item":{"@id":"/hyperdrive/examples/connect-to-postgres/","name":"Connect to PostgreSQL"}},{"@type":"ListItem","position":5,"item":{"@id":"/hyperdrive/examples/connect-to-postgres/postgres-database-providers/","name":"Database Providers"}},{"@type":"ListItem","position":6,"item":{"@id":"/hyperdrive/examples/connect-to-postgres/postgres-database-providers/aws-rds-aurora/","name":"AWS RDS and Aurora"}}]} ```