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React App Deployment with Amazon S3 and CloudFront

This repository demonstrates how to build a CD pipeline that deploys a React application to Amazon S3 and syncs it with Amazon CloudFront, a content delivery network (CDN) managed by AWS.

Why?

It is quite convenient to configure a S3 bucket for static website hosting. However, we can only access it via HTTP protocol. A great way to host our contents is to place it to Amazon CloudFront. This way, not only can we benefit from HTTPS protection but also the out-of-the-box caching mechanism CloudFront provides for us.

Prerequisite

  1. A S3 bucket with static website hosting enabled. Be sure that the index document is set to index.html.
  2. A CloudFront distribution with its origin set to the S3 website endpoint. The endpoint looks like BUCKET.s3-website.us-east-2.amazonaws.com where BUCKET is a placeholder of your S3 bucket name.
  3. The IAM user must be attached with proper S3 access policies and the following CloudFront policies:
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": "s3:ListAllMyBuckets",
            "Effect": "Allow",
            "Resource": "arn:aws:s3:::BUCKET"
        },
        {
            "Action": [
                "cloudfront:CreateInvalidation",
                "cloudfront:GetDistribution",
                "cloudfront:GetStreamingDistribution",
                "cloudfront:GetDistributionConfig",
                "cloudfront:GetInvalidation",
                "cloudfront:ListInvalidations",
                "cloudfront:ListStreamingDistributions",
                "cloudfront:ListDistributions"
            ],
            "Effect": "Allow",
            "Resource": "*"
        }
    ]
}

Where BUCKET is a placeholder of your bucket name.

CD Pipeline

We are using Drone CI as our automation tool. There are two main steps in the pipeline, which are building React applcation and deploying to AWS.

  1. Building React application - In this step, we install all dependencies and create a minified bundle to build/ folder.
- name: build-react-app
  image: node:15.14
  commands:
  - npm install && npm run build
  1. Deploy to AWS - In this step, we upload the minified bundle to S3 and invalidate the CloudFront cache in order to see the updated website instantly.
- name: sync-react-app
  image: amazon/aws-cli:2.1.29
  environment:
    AWS_ACCESS_KEY_ID: 
      from_secret: aws_access_key_id
    AWS_SECRET_ACCESS_KEY:
      from_secret: aws_secret_access_key
    CLOUDFRONT_DISTRIBUTION_ID:
      from_secret: cloudfront_distribution_id
    BUCKET:
      from_secret: bucket
  commands:
  - aws s3 sync ./build/ s3://$BUCKET/ --delete --acl public-read
  - aws cloudfront create-invalidation --distribution-id $CLOUDFRONT_DISTRIBUTION_ID --paths "/*"