Overview of the Issue

Currently the module allows the userdata set on the aws_launch_template to be overriden if the variable userdata_template is passed. However, that variable currently only accepts path to a userdata script as the value of it is passed to templatefile here.

It would be good to have a way to pass the userdata script as a string itself rather than a path to a file.

Motivation for or Use Case

I ran into this issue while attempting to setup multiple runners on the same instance. I have my own scripts that are loaded and rendered through templatefile that I want to pass as userdata to the module.

However, I am not finding any straightforward way of doing this, the only way I can currently do it is:

• Pre-built AMI
• Somehow generate a local temp file and pass the location of that. Terraform currently does not support the creation of temp file (being tracked at Mechanism for creating and using a local temporary directory hashicorp/terraform#21308). And I do not want to use the local provider to create files as there would be a diff in the plan depending on where the module is being called from.

Module version being used

0.40.0

Suggest a Fix

A fix would be to introduce another variable with would allow the user to pass the userdata script as a string instead of a path to a file.