Validation check of Global Accelerator is different from AWS Console

[n-osanai]

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Terraform CLI and Terraform AWS Provider Version

Terraform v0.13.5
+ provider registry.terraform.io/hashicorp/aws v3.31.0

Affected Resource(s)

• aws_globalaccelerator_accelerator

Terraform Configuration Files

provider "aws" {
  region = "us-east-1"
}

resource "aws_globalaccelerator_accelerator" "example" {
  name = "test-accelerator-test-accelerator"
}

Debug Output

• https://gist.github.com/n-osanai/8d9560f9df13cfe596508d701815aa31#file-tf-aws-provider-global-accelerator-bug-txt-L315-L326

Expected Behavior

• Terraform create the accelerator with over 32 characters name.

Actual Behavior

Error: expected length of name to be in the range (1 - 32), got test-accelerator-test-accelerator

  on main.tf line 3, in resource "aws_globalaccelerator_accelerator" "this":
   3:   name            = "test-accelerator-test-accelerator"

Steps to Reproduce

1. only try to create global accelerator with over 32 characters name.

Important Factoids

• AWS document says confusing sentences.
• But I examined, It seems that It can create global accelerator with up to 64 characters.

• Actually, I can create 64 characters global accelerator.

• I think following validation check needs to change 32 to 64

  • terraform-provider-aws/aws/resource_aws_globalaccelerator_accelerator.go

    Line 46 in 366aa1d

    validation.StringLenBetween(1, 32),

[ewbankkit]

@n-osanai Thanks for raising this issue.
The AWS API documentation is self-contradictory:

I'll correct the max. length to 255 (and double check the other attributes).

[chkelly]

My team just ran into the 32 character limitation when attempting to import our production global accelerator instances which have a name that exceeds 32 characters.

I reached out to our AWS TAM around the contradictory nature of the docs and they have escalated to the service team to hopefully get them corrected.

Based on our testing the Max length of 255 seems to be the actual limitation that is enforced.

[ewbankkit]

Related:

• r/aws_globalaccelerator_accelerator: Correctly update flow log attributes when enabled #17739

[e-moshaya]

We've just been hit with the same issue. The name can have a maximum of 64 characters, must contain only alphanumeric characters, periods (.), or hyphens (-), and must not begin or end with a hyphen or period. You can check the API documentation here: https://docs.aws.amazon.com/global-accelerator/latest/api/API_CreateAccelerator.html#API_CreateAccelerator_RequestSyntax

[e-moshaya]

@ewbankkit The actual max length is 64 and not 255. Please can you amend your PR?

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!