I am unable to flush userdata at ec2 startup.

[toasahi]

I am building GitHub actions in aws using ephemeral runner and custom AMI.

My requirement is to run userdata at the time of launching ec2 from the running template, I contacted aws support and they indicated that the code in question is problematic.
user_data = var.runner_os == “windows” ? base64encode(local.user_data) : base64gzip(local.user_data)

Why use base64gzip?

*I know that it is bad practice to run userdata in the startup template with ephemeral runner.

[npalm]

They payload is zipped to avoid exceeding the max size of the user_data script. When building a custom AMI you can ship the user_data in the AMI.