aws_launch_template add support for Instance Metadata Options

[max-rocket-internet]

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Description

Currently the aws_launch_template resource does not support Instance Metadata Options. These options can be required when using the Instance Metadata Service Version 2, which new versions of the AWS SDK now use: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html

When calling the CreateLaunchTemplate action in the EC2 API, the LaunchTemplateData object has a MetadataOptions attribute: https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_LaunchTemplateInstanceMetadataOptionsRequest.html

New or Affected Resource(s)

• aws_launch_template

Potential Terraform Configuration

Perhaps in terraform it could look like this:

resource "aws_launch_template" "foo" {
  name = "foo"
  instance_metadata_options {
    http_endpoint               = "enabled"
    http_put_response_hop_limit = 2
    http_tokens                 = "required"
  }
}

References

https://aws.amazon.com/blogs/security/defense-in-depth-open-firewalls-reverse-proxies-ssrf-vulnerabilities-ec2-instance-metadata-service/

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html

https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_LaunchTemplateInstanceMetadataOptionsRequest.html

[ewbankkit]

Related:

• Support setting EC2 instance metadata to require token (IMDSv2) #10949.

[max-rocket-internet]

@ewbankkit no that's a different resource, the aws_instance. This resource is for the aws_launch_template which is for instances that are created from an autoscaling group. It's a different AWS API.

[max-rocket-internet]

If we can't set this setting, then the result for EKS users can be this: https://medium.com/@ngchiwang/aws-eks-pod-role-5e5554fee501

[ewbankkit]

@max-rocket-internet Correct, related but separate.

[bflad]

Support for configuring metadata options in the aws_instance and aws_launch_template resources has been merged and will release with version 2.55.0 of the Terraform AWS Provider, later today. Thanks to @stefansundin and @ewbankkit for the implementation. 👍

[ghost]

This has been released in version 2.55.0 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 for triage. Thanks!

[ghost]

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 feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!