‘What’s My Name’ for Serverless Framework

It is frequently useful to know the name of a generated resource in the Serverless Framework when building for AWS. I had been struggling with this when I needed to refer to a generated resource in a separate CloudFormation section. After much searching I found a very useful trick that is probably already well documented but I’ll add my small bit of amplification here.

Finding the Generated CloudFormation

Serverless works by generating a CloudFormation template based on the serverless.yml file. This generated file is accessible in a hidden subdirectory of the directory that contains the serverless.yml file if you run the package command. For me that looks like this:

sls package
less .serverless/cloudformation-template-update-stack.json

Default Names

Based on my fairly standard serverless.yml file these are the default names for a couple of important resources.