zzz - Trigger Lambda With IAM User Through Function URL Using CURL

Trigger Lambda With IAM User Through Function URL Using CURL

July 25, 2022

Using CURL to trigger AWS services is platform/evvironment irrelevant. One of my work's target is to make it easy to be deployed by an AWS zero-knowledge user. So I want to make the dependency of my solution minimum.

blog

bash

aws

lambda

Suppose you already have Lambda on AWS with Function URL enabled. You get a URL like:

https://mq5xgstfm3[............]tibik.lambda-url.us-west-2.on.aws/

If your Lambda is not authenticated by any IAM role/user, you can simply trigger it curl:

curl -X POST 'https://mq5xgstfm3[............]tibik.lambda-url.us-west-2.on.aws/' -H 'content-type: application/json' -d 'hello'

But if this lambda's invoke action is protected by IAM user, we can trigger it by

curl -X POST 'https://mq5xgstfm3[............]tibik.lambda-url.us-west-2.on.aws/' -H 'content-type: application/json' -d 'hello' --user '{ACCESS KEY}:{ACCESS SECRET}' --aws-sigv4 'aws:amz:us-west-2:lambda'

In this way, "hello" will be placed into the body of the request.