Pointing Two AWS Lambda Functions to Same Domain

Question

I am using the serverless framework and AWS Lambdas to deploy two function with different path names (/message and /subscribe) to my subdomain at form.example.com.

I am using the serverless-domain-manager plugin for serverless and successfully configured my domain for the /message function using serverless create_domain, but since I also needed to do that for /subscribe I tried to follow the same process receiving messages that the domain already existed and caught an error Error: Unable to create basepath mapping..

After flipping a configuration (createRoute53Record: false) and re-running it started to work, but now when I run sls deploy for my /message function I get the error message I used to see for /subscribe.

Error (from sls deploy):

layers:
  None

  Error --------------------------------------------------

  Error: Unable to create basepath mapping.


     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

Here is my config for the serverless-domain-manager:

plugins:
  - serverless-offline
  - serverless-domain-manager

custom:
  transactionDomain:
    dev: ${file(./local-keys.yml):transactionDomain}
    prod: ${ssm:mg-production-transaction-domain~true}
  newsletterDomain:
    dev: ${file(./local-keys.yml):newsletterDomain}
    prod: ${ssm:mg-production-newsletter-domain~true}
  apiKey:
    dev: ${file(./local-keys.yml):apiKey}
    prod: ${ssm:mg-production-api-key~true}
  customDomain:
    domainName: form.example.com
    certificateName: 'www.example.com' //sub-domain is included in the certificate
    stage: 'prod'
    createRoute53Record: true

Does this have to do with the deployment of two functions to the same domain? Is there a proper process to allow that to happen?

Answer 1

If you do not need API gateway specific features, such as usage plan. You can put two lambda behind ALB per path routing.