serverless-aws-function-url-custom-domain

Automatically creates AWS CloudFront distribution and Route 53 records to AWS Lambda with Function URL (no api gateway).

Installation

npm install --save-dev serverless-aws-function-url-custom-domain

Configuration

This plugin assumes your domain is hosted and managed with AWS Route53. SSL certificate is managed via certificate manager.

# add in your serverless.yml
plugins:
  - serverless-aws-function-url-custom-domain
custom:
  urlDomain:
    domains:
      - ${env:SUBDOMAIN}.yourdomain.com  # custom domain 1
      - ${env:SUBDOMAIN}-alt.yourdomain.com  # custom domain 2
    hostedZoneName: yourdomain.com.  # your domain Route 53 hosted zone name
    certificateArn: 'arn:aws:acm:us-east-1:xxxxx:certificate/xxxxx' # need to be located at NVirgina
    route53: false # disable route 53 integration
functions:
  api:
    handler: wsgi_handler.handler
    url: true # activate function URL!

Deploy

serverless deploy

Inspect Result

serverless info --verbose

Output:
CloudFront domain name
  xxxxx.cloudfront.net (CNAME: ${env:SUBDOMAIN}.yourdomain.com)

IAM Policy

In order to make this plugin work as expected a few additional IAM Policies might be needed on your AWS profile.

More specifically this plugin needs the following policies attached:

cloudfront:CreateDistribution
cloudfront:GetDistribution
cloudfront:UpdateDistribution
cloudfront:DeleteDistribution
cloudfront:TagResource
route53:ListHostedZones
route53:ChangeResourceRecordSets
route53:GetHostedZone
route53:ListResourceRecordSets
acm:ListCertificates

You can read more about IAM profiles and policies in the Serverless documentation.