Using aws elasticbeanstalk with amplify

Question

Pulumi · Accepted Answer

AWS Elastic Beanstalk is an orchestration service offered by Amazon Web Services for deploying applications which orchestrates various AWS services, including EC2, S3, Simple Notification Service (SNS), CloudWatch, auto-scaling, and Elastic Load Balancers. AWS Amplify, on the other hand, is a development platform for building secure, scalable mobile and web applications. It's common to use AWS Amplify to build the frontend of a web application and Elastic Beanstalk for running the backend services.

In the following TypeScript program, I'm going to show you how to create both an AWS Elastic Beanstalk application and environment to deploy a backend service, and an AWS Amplify app to manage the frontend deployment and hosting.

To begin with, you should have the AWS CLI configured with the necessary access rights and the Pulumi CLI installed and set up.

Here is the Pulumi program:

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

// Create an Elastic Beanstalk Application
const ebApp = new aws.elasticbeanstalk.Application("my-eb-app", {
    name: "my-eb-app",
    // Optional description
    description: "My Elastic Beanstalk application",
});

// Specify the Elastic Beanstalk Solution Stack
// This is an example of a Node.js stack; you'll replace it with the one that matches your use case.
// You can find the latest solution stack name in the AWS documentation or using the EB CLI.
const solutionStackName = "64bit Amazon Linux 2 v5.4.12 running Node.js 14";

// Create an Elastic Beanstalk Environment
const ebEnv = new aws.elasticbeanstalk.Environment("my-env", {
    application: ebApp.name,
    solutionStackName: solutionStackName,
    settings: [
        {
            namespace: "aws:elasticbeanstalk:environment",
            name: "EnvironmentType",
            value: "LoadBalanced",
        },
    ],
    // Optionally, specify the environment tier as 'WebServer' or 'Worker' depending on the type of application
    tier: "WebServer",
});

// Create a new Amplify App
const amplifyApp = new aws.amplify.App("my-amplify-app", {
    name: "myamplifyapp",
    // Repository URL is the source code repository for your front-end application
    // Replace with real repository URL.
    repository: "https://github.com/your-username/your-front-end-repo",
    // OAuth token is the personal access token with privileges to access the repo.
    // The token should be set in the AWS Secrets Manager or as an environment variable.
    oauthToken: "your-github-oauth-token",
    buildSpec: `version: 1
frontend:
  phases:
    build:
      commands: ['npm install', 'npm run build']`,
    // Optional environment variables can be configured here
    environmentVariables: {
        REACT_APP_API_URL: pulumi.interpolate`http://${ebEnv.environmentName}.elasticbeanstalk.com`,
    },
});

// Output the Elastic Beanstalk environment URL and the Amplify App ID
export const elasticBeanstalkEnvironmentUrl = ebEnv.endpoint;
export const amplifyAppId = amplifyApp.appId;
```

This program does the following:

1. It creates an Elastic Beanstalk application that acts as a container for your Elastic Beanstalk environment.
2. It specifies the solution stack, which refers to the platform version running on your Elastic Beanstalk environments.
3. It creates an Elastic Beanstalk environment, which is where your app code will be deployed.
4. It sets up AWS Amplify for a static front-end app by pointing to a GitHub repository containing the front-end code.
5. It provides a BuildSpec to tell Amplify how to build and deploy the app from the repository.
6. It configures the Amplify environment variables dynamically using the output of our Elastic Beanstalk environment for seamless integration.
7. It exports the Elastic Beanstalk environment URL and the Amplify App ID as stack outputs. These can be used to access the deployed backend service and the front-end application respectively.

To apply the Pulumi program and create the cloud resources, run `pulumi up`. The program then prompts you to review the changes and approve them before creating the resources. Once the resources are created, the outputs—including the URLs to access your deployed applications—will be displayed in the terminal.

Remember to replace placeholders like `"your-github-oauth-token"` with actual values obtained from your setup. Tokens and sensitive information should be managed carefully, typically with Pulumi's secret management or environment variables instead of hard coding them into your program.