aws_instance doesn't correctly populate the default http_endpoint metadata_option

[chenjie]

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Terraform CLI and Terraform AWS Provider Version

Terraform v0.13.5
+ provider registry.terraform.io/hashicorp/aws v3.21.0

Affected Resource(s)

• aws_instance

Terraform Configuration Files

Please include all Terraform configurations required to reproduce the bug. Bug reports without a functional reproduction may be closed without investigation.

resource "aws_instance" "test" {
  ami = "ami-085925f297f89fce1"
  instance_type = "t2.micro"

  metadata_options {
    http_tokens = "required"
  }
}

Debug Output

Panic Output

Expected Behavior

it should create an AWS EC2 instance without any errors

Actual Behavior

aws_instance.test: Creating...

Error: Error launching source instance: InvalidParameterValue: A value of '' is not valid for HttpEndpoint. Specify either 'enabled' or 'disabled' and try again.
        status code: 400, request id: 3b732dc2-23c6-4d87-88d6-9d0b66794f90

Steps to Reproduce

1. terraform apply

Important Factoids

References

• https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/instance#http_endpoint

Explicitly assigning a value to http_endpoint attribute works, but the doc says it is optional and defaults to "enabled". Therefore, I should be able to create an instance without explicitly specifying it.

[github-actions]

This functionality has been released in v5.3.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.