How to deploy a lambda without vpc when the default vpc is set in the provider object and used for all the other lambdas

Serverless Framework
3

I have the same requirements for some of my applications: some Lambdas need to be part of the same VPC, while others must not be part of any VPC at all.

What I have being doing so far and has worked well for me is to define the VPC configuration in a custom settings section of my serverless.yml file and reference this for all the Lambdas that need to be part of the VPC. The Lambdas that do not need to be part of a VPC simply do not reference the configuration.

Note that this method involves that no VPC configuration is set at the provider level.

For instance:

custom:
  vpc: # Define custom VPC configuration
    securityGroupIds:
      - securityGroupId1
      - securityGroupId2
    subnetIds:
      - subnetId1
      - subnetId2

functions:
  hello:
    handler: handler.hello
    vpc: ${self:custom.vpc} # Use the configuration defined above for the VPC
  helloAgain:
    handler: handler.helloAgain
    # Do not include any VPC configuration

Note that you can create one than one VPC configuration with this method, in case you need different Lambdas to be part of different VPCs.

Hope this helps! :slight_smile: