Using aws us-east-1 with us-west-2

Question

Pulumi · Accepted Answer

Sure, in order to create resources that span multiple AWS regions using Pulumi, you would typically have to create a stack for each region, or instantiate resources within your Pulumi program specifying the region you want to deploy each resource to. AWS recommends organizing resources by region to reduce latency and design for high availability.

Below is an example in TypeScript that demonstrates how you might create two Amazon S3 buckets using Pulumi, one in `us-east-1` and one in `us-west-2`.

Let's break down the parts of the program:

1. **Set up AWS Provider for different regions:** Each provider instance is configured for a specific AWS region, and is then used when creating resources to specify in which region the resource should be created.

2. **Create S3 Buckets:** We use the `Bucket` resource from Pulumi's AWS provider to create a new S3 bucket. We create one bucket in each of the two specified regions.

3. **Export bucket names:** Finally, we output the names of the created S3 buckets for later access, such as from the Pulumi CLI or in the Pulumi Console.

Here's a comprehensive walkthrough of how you can create resources in different regions:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an AWS provider for the us-east-1 region.
const useast1Provider = new aws.Provider("useast1Provider", {
    region: "us-east-1",
});

// Create an S3 bucket in the us-east-1 region using the us-east-1 provider.
const bucketInUSEast1 = new aws.s3.Bucket("my-bucket-useast1", {
    // Bucket configuration
}, { provider: useast1Provider });

// Create an AWS provider for the us-west-2 region.
const uswest2Provider = new aws.Provider("uswest2Provider", {
    region: "us-west-2",
});

// Create an S3 bucket in the us-west-2 region using the us-west-2 provider.
const bucketInUSWest2 = new aws.s3.Bucket("my-bucket-uswest2", {
    // Bucket configuration
}, { provider: uswest2Provider });

// Export the names of the buckets
export const bucketNameUSEast1 = bucketInUSEast1.id;
export const bucketNameUSWest2 = bucketInUSWest2.id;
```

In this code, the `provider` argument passed to each `Bucket` resource tells Pulumi which AWS provider to use for creating that bucket. By having dedicated providers for `us-east-1` and `us-west-2`, we ensure that the corresponding resources are created in their appropriate regions.

Replace `'// Bucket configuration'` with any additional configuration settings you might want to apply to your S3 buckets, such as versioning, logging, or access policies.

Make sure you have Pulumi installed, set up with AWS access, and then you can apply this code using Pulumi CLI by navigating to the project directory and running `pulumi up`.

For more information on how to use Pulumi with AWS, you can refer to the [Pulumi AWS documentation](https://www.pulumi.com/docs/intro/cloud-providers/aws/).