Using Aws Alb With Transfer

Introduction

This Pulumi program will demonstrate how to set up an AWS Application Load Balancer (ALB) and integrate it with AWS Transfer Family. The ALB will distribute traffic to the Transfer Family server, which is used for secure file transfers.

Step-by-Step Explanation

Step 1: Set Up the AWS Application Load Balancer (ALB)

1. Create a VPC: The ALB will be created within a VPC. If you don’t have a VPC, you will need to create one.
2. Create Subnets: The ALB requires at least two subnets in different availability zones.
3. Create a Security Group: Define the security group rules to allow traffic to the ALB.
4. Create the ALB: Define the ALB with the necessary listeners and target groups.

Step 2: Set Up AWS Transfer Family

1. Create a Transfer Family Server: Set up the Transfer Family server with the necessary protocols (SFTP, FTPS, FTP).
2. Configure User Access: Define users and their access permissions.
3. Integrate with ALB: Register the Transfer Family server as a target for the ALB.

Conclusion

In this program, we set up an AWS Application Load Balancer and integrated it with AWS Transfer Family to handle secure file transfers. This setup ensures high availability and scalability for file transfer operations.

Full Code Example

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

// Create a VPC
const vpc = new aws.ec2.Vpc("my-vpc", {
    cidrBlock: "10.0.0.0/16",
});

// Create Subnets
const subnet1 = new aws.ec2.Subnet("subnet1", {
    vpcId: vpc.id,
    cidrBlock: "10.0.1.0/24",
    availabilityZone: "us-west-2a",
});

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

// Create a Security Group
const albSecurityGroup = new aws.ec2.SecurityGroup("alb-sg", {
    vpcId: vpc.id,
    ingress: [
        { protocol: "tcp", fromPort: 80, toPort: 80, cidrBlocks: ["0.0.0.0/0"] },
    ],
    egress: [
        { protocol: "-1", fromPort: 0, toPort: 0, cidrBlocks: ["0.0.0.0/0"] },
    ],
});

// Create the ALB
const alb = new aws.alb.LoadBalancer("my-alb", {
    securityGroups: [albSecurityGroup.id],
    subnets: [subnet1.id, subnet2.id],
});

// Create a Target Group
const targetGroup = new aws.alb.TargetGroup("my-target-group", {
    port: 80,
    protocol: "HTTP",
    vpcId: vpc.id,
});

// Create a Listener
const listener = new aws.alb.Listener("my-listener", {
    loadBalancerArn: alb.arn,
    port: 80,
    defaultActions: [{
        type: "forward",
        targetGroupArn: targetGroup.arn,
    }],
});

// Create a Transfer Family Server
const transferServer = new aws.transfer.Server("my-transfer-server", {
    endpointType: "PUBLIC",
    identityProviderType: "SERVICE_MANAGED",
    protocols: ["SFTP"],
});

// Create a Transfer Family User
const transferUser = new aws.transfer.User("my-transfer-user", {
    serverId: transferServer.id,
    userName: "test-user",
    role: "arn:aws:iam::123456789012:role/TransferFamilyAccessRole", // Replace with your IAM role ARN
    homeDirectory: "/my-directory",
});

// Register the Transfer Family server as a target for the ALB
const targetGroupAttachment = new aws.alb.TargetGroupAttachment("my-target-group-attachment", {
    targetGroupArn: targetGroup.arn,
    targetId: transferServer.id,
    port: 80,
});

// Export outputs
export const vpcId = vpc.id;
export const albDnsName = alb.dnsName;
export const transferServerId = transferServer.id;