r/aws_instance,r/aws_launch_template: Handle credit_specification for new EC2 T4g instance family

[ewbankkit]

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Description

There is a new burstable Amazon EC2 instance family, T4g.
The aws_instance.credit_specification attribute needs to be handled as for the T3 instance family.

T4g instances are designed for applications that don’t use CPU at full power most of the time, using the same credit model as T3 instances with unlimited mode enabled by default.

New or Affected Resource(s)

Resources

• aws_instance
• aws_launch_template

Data sources

• aws_instance
• aws_launch_template

Potential Terraform Configuration

resource "aws_instance" "example" {
  instance_type = "t4g.micro"
}

References

Announcement.
Blog post.

[jackluo923]

Any updates on this? The pull request has been in WIP for half a year. Do you plan on continue working on it or is it abandoned? @ewbankkit

Update: For anyone who needs to modify default credit specifications for t4g or any other not-yet-supported ec2 instances in terraform is by setting the default credit specification in aws itself as a temporary workaround. See link here: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances-how-to.html#burstable-performance-instance-set-default-credit-specification-for-account

[jetxr]

The credit_specification gets ignored for t4g instances. You have to manually change it. Any reason why this is the case?

[github-actions]

This functionality has been released in v4.20.0 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]

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