gatsby-plugin-s3

Enables you to deploy your gatsby site to a S3 bucket. Requires very little configuration, while optimizing your site as much as possible.

Features:

• 📦 Fully handles the deployment process for you, all you need to configure is your bucket name.
  • Automatically creates/updates bucket with optimal configuration applied.
  • Syncs gatsby files to the bucket & updates metadata.
• ⏭ Redirects.
• 💾 Optimizes caching for you.
• ☁️ Optional serverless framework support if you want to take things a step further.
• ✏️ Add your own params to uploaded S3 objects (if you wish).

Usage

Install the plugin:

npm i gatsby-plugin-s3

Add it to your gatsby-config.js & configure the bucket name (required)

plugins: [
    {
        resolve: `gatsby-plugin-s3`,
        options: {
            bucketName: 'my-website-bucket',
        },
    },
];

There are more fields that can be configured, see below.

Add a deployment script to your package.json

"scripts": {
    ...
    "deploy": "gatsby-plugin-s3 deploy"
}

Optionally you can skip the confirmation prompt automatically by adding --yes like so:

    "deploy": "gatsby-plugin-s3 deploy --yes"

When gatsby-plugin-s3 detects a CI environment, it will automatically skip this prompt by default.

After configuring credentials (see below), you can now execute npm run build && npm run deploy to have your site be build and immediately deployed to S3.

Credentials

Globally

A couple of different methods of specifying credentials exist, the easiest one being using the AWS CLI:

# NOTE: ensure python is installed
pip install awscli
aws configure

Environment variables

If you don't want to have your credentials saved globally (i.e. you're dealing with multiple tokens on the same environment), they can be set as environment variables, for example:

AWS_ACCESS_KEY_ID=xxxx AWS_SECRET_ACCESS_KEY=xxxx npm run deploy

Additionally, these can be set in a local .env file too, but this requires a bit more setup work. See the recipe here.

Configuration

As mentioned above, the bucketName is required, but there's much more to configure (add to the options object) as you please:

Property	Type	Default	Description
bucketName	string	n/a	Your bucket name (required)
bucketPrefix	string | undefined	undefined	An optional prefix/directory to use on the bucket. This requires the bucket to already be created. Do not include leading or trailing slashes. Can be useful with CloudFront originPath option.
region	string | undefined	Whatever the AWS SDK decides is the default otherwise.	Your region.
protocol	'http' | 'https' | undefined	undefined	The protocol of your site. If you are using a CDN or reverse-proxy (such as CloudFront) in front of S3. then you must fill out this and the hostname field to ensure redirects work correctly. If you are just using your S3 website directly, this is unnecessary..
hostname	string | undefined	undefined	The hostname of your site. See above.
params	Params| undefined	Depending on your mergeCachingParams setting, either an empty object or the recommended headers.	Custom params to apply to your files
acl	string | null | undefined	"public-read"	Define bucket ACL. If you don't want to use an ACL, set this to null
mergeCachingParams	boolean | undefined	true	Enable Gatsby recommended caching settings
generateRoutingRules	boolean | undefined	true	The plugin will generate routing rules to be applied to the website config for all redirects it can find.
generateRedirectObjectsForPermanentRedirects	boolean | undefined	false (until 1.0)	The plugin will not generate routing rules for permanent (301) redirects, but will instead upload empty objects with the x-amz-website-redirect-location property. This can be used to get around the hard limit of 50 routing rules on AWS S3.
generateIndexPageForRedirect	boolean | undefined	true	The plugin will create a fake index page if a redirect from the root path is made - as a workaround, because routing rules can't be applied in that situation.
generateMatchPathRewrites	boolean | undefined	true	Generate rewrites for client only paths
removeNonexistentObjects	boolean | undefined	true	Remove S3 objects if they no longer exist locally
retainObjectsPatterns	string array | undefined	[]	An array of file globs that should not be removed from the S3 bucket if the file does not exist locally, this does nothing unless removeNonexistentObjects is true. See here for glob format
customAwsEndpointHostname	string | undefined	amazonaws.com	Custom AWS S3 endpoint. See our docs for all available options
enableS3StaticWebsiteHosting	boolean | undefined	true	Disables modifications to the S3 Static Website Hosting configuration. Without S3 Static Website Hosting some features (index.html rewriting, trailing slash redirects, and serverside redirects), will not function. Not recommended, but could be useful for preventing Cloud formation Stack Drift or suppressing Terraform noise if you don't need, the static website hosting functionality.
parallelLimit	number | undefined	20	Max number of files to upload in parallel.

Recipes

Several recipes are available:

Adding environment specific settings

Learn how to retrieve AWS credentials from a .env file. Additionally setup a different bucket name depending on your environment.

• See the recipe

Using a different content type for files

Learn how to override the content type gatsby-plugin-s3 sets on your files.

• See the recipe

Using CloudFront with gatsby-plugin-s3

CloudFront is a global CDN and can be used to make your blazing fast Gatsby site load even faster, particularly for first-time visitors. Additionally, CloudFront provides the easiest way to give your S3 bucket a custom domain name and HTTPS support.

• See the recipe

Using serverless with gatsby-plugin-s3

Serverless can be used in combination with gatsby-plugin-s3, swapping the plugin's deployment step for sls deploy instead. Serverless will give you the added advantage of being able to add multiple AWS services such as Lambda, CloudFront, and more all in the same repo, deployment step and CloudFormation stack while still being able to profit from all the optimisations gatsby-plugin-s3 does.

• See the recipe Bare bones implementation details on how to set up serverless & gatsby-plugin-s3
• See the with-serverless example

Using a proxy

Routing traffic from gatsby-plugin-s3 during the deployment through a http proxy can be done with a env var.

• See the recipe

Configuring a custom endpoint

Using Yandex, DigitalOcean, or any other S3-compliant storage service together with gatsby-plugin-s3

• See the recipe

Deploying your gatsby site under a prefix in your bucket

You can deploy your site to a prefix, leaving all other data in the bucket intact. gatsby-plugin-s3 respects the pathPrefix gatsby option with no additional setup needed for this plugin, so you can follow the guide in the gatsby docs.

AWS S3 Routing Rules Limit

AWS S3 has an undocumented limit on the number of Routing Rules that can be applied to a bucket. Unfortunately this limits the number of 302 (temporary) redirects you can create. For 301 (permanent) redirects, a way to get around the limit is setting the x-amz-website-redirect-location header on an empty object. To enable this behavior, set the generateRedirectObjectsForPermanentRedirects configuration option to true.