是否可以使用 Serverless 在两个区域部署 API 网关和 Lambda？

Question

I'm using serverless to deploy my Lambda APIs through API Gateway on AWS, but one thing that looks like is missing is the ability to deploy the Lambda API and the API Gateway into different regions. Right now, if I set the region to the serverless deploy command, it deploys both in that region, regardless of the fact that in the serverless.yml file I specified a different region for the Lambda. So let's say you have this file:

service: My-Awesome-API

provider:
  name: aws
  region: eu-west-1
  runtime: nodejs12.x
  memorySize: 384

functions:
  graphql:
    handler: src/index.handler
    name: My-Awesome-GraphQL-API
    events:
      - http:
          path: graphql
          method: POST
          cors: true
      - http:
          path: graphql
          method: GET
          cors: true

and you deploy the API with this command serverless deploy --region=eu-central-1 . The Lambda function will be deployed in eu-central-1 rather than in eu-west-1 .

Since this can be useful, and it can be done within API Gateway, is there a way to specify this behaviour with the serverless framework too?

Answer 1

The region in the provider settings is just the default. By using the --region argument you overwrite that default, so the behaviour is expected.

Serverless is based on CloudFormation in the background and CloudFormation stacks are region-specific so there's no way in vanilla CloudFormation to deploy resources in a single stack across multiple regions.

(You can do that with custom resources though, but I would recommend against that practice except from a few edge cases.)