AWS golang Lambda using macOS

If you happen to be trying to create a Lambda function in golang, you might endup getting this error:

{
  "errorMessage": "fork/exec /var/task/main: exec format error",
  "errorType": "PathError"
}

If that’s how you ended up in this corner of the web let me point you in the right direction. Here: https://docs.aws.amazon.com/lambda/latest/dg/golang-package.html

The problem was that I didn’t read the section “Creating a .zip file on macOS and Linux”, you have to let go know that this will run on linux:

GOOS=linux go build main.go

Once you do that, zip the executable (just the executable!) and upload it to AWS.

You are good to go now!