This plugin provisions AWS RDS databases on Shuttle. The following engines are supported:
  • Postgres
  • MySQL
  • MariaDB
This resource is available on the Pro tier and up. Provisioning it incurs additional charges, except on the Growth tier, where the first instance is included. For details, see our pricing page.

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RDS vs Shared DB

  • Dedicated Instance: Each AWS RDS database is it’s own dedicated instance.
  • Stability and Security: AWS RDS has greater stability due to it being a service directly offered by AWS, and also greater security due to being a dedicated instance.
  • Flexible: AWS RDS instances on the Shuttle platform can be customised to suit your needs. Instance size can be increased from the default and AWS RDS features can be enabled or disabled.
On AWS RDS we offer:
  • Postgres
  • MySQL
  • MariaDB
With the Shared DB we offer:
  • Postgres

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Default RDS Instance

The RDS instance created by Shuttle has the following specifications and features by default:
  • 2 vCPU
  • 1 GB Memory
  • 20 GiB Storage
  • Backups Disabled
  • Single Availability Zone
  • 1 Node
  • No Proxy
The pricing of this instance can be found on our pricing page. If you require a different configuration, please contact us. We can provision any size or configuration of RDS to suit your needs - a full list of RDS features can be found here.

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Usage

Please contact us to enable RDS resources for your account. Then, add the shuttle-aws-rds dependency. Each type of database is behind its own feature flag and macro attribute path.
EngineFeature flagAttribute path
Postgrespostgresshuttle_aws_rds::Postgres
MySQLmysqlshuttle_aws_rds::MySql
MariaDBmariadbshuttle_aws_rds::MariaDB

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Output type

This resource supports the same output types as Shared DB Postgres, along with sqlx::MySqlPool for MySQL and MariaDB. Lastly, add a macro annotaion to the Shuttle main function. Here are examples for Postgres: 
// Use the connection string
#[shuttle_runtime::main]
async fn main(#[shuttle_aws_rds::Postgres] conn_str: String) -> ... { ... }

// With sqlx feature flag, get a PgPool connected automatically
#[shuttle_runtime::main]
async fn main(#[shuttle_aws_rds::Postgres] pool: sqlx::PgPool) -> ... { ... }
The Shuttle builder does not currently support sqlx compile-time checked macros. Use cargo sqlx prepare to enable offline building.

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Parameters

All of the AWS RDS macros take the same optional parameter:
ParameterTypeDescription
local_uri&strIf specified, on local runs, use this database instead of starting a Docker container for it
database_name&strName to give the default database. Defaults to project name if none is given
When passing in strings, you can also insert secrets from Secrets.toml using string interpolation. To insert the PASSWORD secret, pass it in like this: 
#[shuttle_runtime::main]
async fn main(
    #[shuttle_aws_rds::Postgres(
        local_uri = "postgres://postgres:{secrets.PASSWORD}@localhost:16695/postgres"
    )] conn_str: String,
) -> ... { ... }
Caveat: If you are interpolating a secret from Secrets.dev.toml, you need to set the same secret in Secrets.toml to a empty string so that this step does not crash in deployment.
The URI should be formatted according to the Postgres or MySql and MariaDB documentation, depending on which one you’re using. If you do not specify a local_uri, then cargo-shuttle will attempt to spin up a Docker container and launch the database inside of it. For this to succeed, you must have Docker installed and you must also have started the Docker engine. If you have not used Docker before, the easiest way is to install the desktop app and then launch it in order to start the Docker engine.

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Connection string

After deploying a project with a database macro, you can view the connection string with credentials with: 
shuttle resource list --show-secrets
Using the connection string, you can connect to it for manual querying, inspection, and migration.

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Example

This snippet shows the main function of an Axum app that uses the #[shuttle_aws_rds::Postgres] attribute macro to provision an RDS Postgres database, which can be accessed with an sqlx Pool.
main.rs
#[shuttle_runtime::main]
async fn main(
    #[shuttle_aws_rds::Postgres] pool: PgPool,
) -> ShuttleAxum {
    pool.execute(include_str!("../schema.sql"))
        .await
        .map_err(CustomError::new)?;

    let state = MyState { pool };
    let router = Router::new()
        .route("/todo", post(add));
        .route("/todo/:id", get(retrieve));

    Ok(router.into())
}