Serverless Plugin Custom Domain

homepage icon https://github.com/dougmoscrop/serverless-plugin-custom-domain

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Repo README Contents:

serverless-plugin-custom-domain

This is a plugin for Serverless that injects a CloudFormation Custom Resource in your deployed stack that sets up a base path mapping between the ApiGateway::Deployment that Serverless creates, and an API Gateway Custom Domain.

Usage


service: my-service

plugins:
  - serverless-plugin-custom-domain

custom:
  domain: "${opt:region}.myservice.foo.com"

Notes

Why a Custom Resource?

CloudFormation supports ApiGateway::BasePathMapping resources but I found they frequently fail to update correctly. Implementing the (relatively simple) logic to get-and-update-or-create combined with a remove hook for cleanup has proven to be more reliable.

Setting up the Custom Domain

These take a long time to provision and are long-lived persistent resources that have Route53 entires pointing at them as well as ACM certificates that have to be requested and approved. You should manage these outside of Serverless, either via CloudFormation or something like Terraform.