Using aws vpc with amplify

Question

Pulumi · Accepted Answer

To integrate AWS VPC with AWS Amplify, you would typically set up your VPC to ensure your backend resources, such as databases or Lambda functions, are securely connected within your AWS environment. AWS Amplify does not manage VPC resources directly, but it can interact with services placed inside a VPC by configuring VPC connections for those services.

Here's a general approach for using a VPC with AWS Amplify:

1. **Create a VPC**: To begin, you'd create a VPC where your backend resources will reside. This includes specifying CIDR blocks and setting up subnets, route tables, and internet gateways if necessary.

2. **Set Up Backend Resources**: After setting up the VPC, you would configure any necessary backend services, like databases, within the VPC.

3. **Connect Amplify to VPC Resources**: If your Amplify front-end needs to interact with these resources, you'd typically use AWS Lambda functions as intermediaries. These Lambda functions can be configured with the VPC, allowing them to access the resources within it.

4. **Deploy Amplify Application**: Finally, deploy your front-end application with AWS Amplify, making sure it can communicate with the backend either through API Gateway or directly invoking Lambda functions inside your VPC.

Here is a Pulumi TypeScript program to create a basic AWS VPC suitable for use with other AWS services, which can be leveraged by an AWS Amplify application. Keep in mind that this program does not include the setup of AWS Amplify, which is done using the Amplify CLI or its console.

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

// Create a new VPC with a specified CIDR block
const vpc = new aws.ec2.Vpc("myVpc", {
    cidrBlock: "10.0.0.0/16",
    enableDnsHostnames: true,
    enableDnsSupport: true,
    tags: {
        Name: "my-vpc",
    },
});

// Create an Internet Gateway for the VPC
const internetGateway = new aws.ec2.InternetGateway("myInternetGateway", {
    vpcId: vpc.id,
    tags: {
        Name: "my-internet-gateway",
    },
});

// Create a Route Table
const routeTable = new aws.ec2.RouteTable("myRouteTable", {
    vpcId: vpc.id,
    routes: [
        {
            cidrBlock: "0.0.0.0/0",
            gatewayId: internetGateway.id,
        },
    ],
    tags: {
        Name: "my-route-table",
    },
});

// Create subnets for the VPC
const subnet1 = new aws.ec2.Subnet("mySubnet1", {
    vpcId: vpc.id,
    cidrBlock: "10.0.1.0/24",
    availabilityZone: "us-west-2a",
    tags: {
        Name: "my-subnet-1",
    },
});

const subnet2 = new aws.ec2.Subnet("mySubnet2", {
    vpcId: vpc.id,
    cidrBlock: "10.0.2.0/24",
    availabilityZone: "us-west-2b",
    tags: {
        Name: "my-subnet-2",
    },
});

// Associate subnets with Route Table
const routeTableAssociation1 = new aws.ec2.RouteTableAssociation("myRouteTableAssociation1", {
    subnetId: subnet1.id,
    routeTableId: routeTable.id,
});

const routeTableAssociation2 = new aws.ec2.RouteTableAssociation("myRouteTableAssociation2", {
    subnetId: subnet2.id,
    routeTableId: routeTable.id,
});

export const vpcId = vpc.id;
export const publicSubnetIds = [subnet1.id, subnet2.id];
```

In this program, you define the VPC and necessary components to get it up and running. You:

1. Create a VPC with a CIDR block that defines the IP address range for the resources in the VPC.
2. Set up an Internet Gateway for the VPC to allow communication with the internet.
3. Configure a Route Table with a default route to direct all traffic to the internet gateway.
4. Define Subnets that will be used to host resources within your VPC, associating them with the Route Table to dictate their routing behavior.
5. Export the VPC and Subnet IDs to be used in other Pulumi programs or stacks, perhaps for setting up backend AWS resources for your Amplify app.

Please note that you would also need to set up any required backend services and grant appropriate permissions for Amplify -> VPC resource access separately as per your application’s needs. This is a simplified scenario, and security groups, NAT gateways, or additional routing configurations may be required for a production setup, which should be adjusted based on your specific security and architecture requirements.