Unable to use imported keypair with aws_launch_configuration

[mrjfox]

Hi

It appears that i am unable to use aws_launch_configuration (aka ALC) with an imported aws keypair and i have no issue importing the key only using it with ALC.

1) Successful import

terraform import aws_key_pair.imported_key imported_key
aws_key_pair.imported_key: Importing from ID "imported_key"...
aws_key_pair.imported_key: Import complete!
  Imported aws_key_pair (ID: imported_key)
aws_key_pair.imported_key: Refreshing state... (ID: imported_key)

Import successful!

The resources that were imported are shown above. These resources are now in
your Terraform state and will henceforth be managed by Terraform.

2) It then fails on terraform plan

terraform plan

Error: aws_key_pair.imported_key: "public_key": required field is not set

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Terraform Version

Affected Resource(s)

• aws 2.8.0
• terraform 0.11.13

Terraform Configuration Files

Have excluded the rest of the terraform manifest, only included the parts used.

terraform {
  backend "local" {
      path = "./terraform.tfstate"
    }
}

resource "aws_key_pair" "imported_key" {
  key_name   = "imported_key"
}

resource "aws_launch_configuration" "master-ap-southeast-2c-masters-example-com" {
  name_prefix                 = "master-ap-southeast-2c.masters.example-com-"
  image_id                    = "ami-04481c741a0311bbb"
  instance_type               = "t2.medium"
  key_name                    = "${aws_key_pair.imported_key.id}"
  iam_instance_profile        = "${aws_iam_instance_profile.masters-example-com.id}"
  security_groups             = ["${aws_security_group.masters-example-com.id}"]
  associate_public_ip_address = true
  user_data                   = "${file("${path.module}/data/aws_launch_configuration_master-ap-southeast-2c.masters.example-com_user_data")}"

  root_block_device = {
    volume_type           = "gp2"
    volume_size           = 64
    delete_on_termination = true
  }

  lifecycle = {
    create_before_destroy = true
  }

  enable_monitoring = false
}

Debug Output

Panic Output

Expected Behavior

I expect to be able to use the import keypair

When importing, terraform asks to define the keypair meaning:

resource "aws_key_pair" "imported_key" {
  key_name   = "jareds-eks-test"
}

Actual Behavior

I complaints due to the lack of public key.

Steps to Reproduce

1. terraform init
2. `terraform import #See above
3. terraform plan

Important Factoids

References

• #0000

[eramirez51]

+1

[bflad]

Hi folks 👋 Sorry for this frustrating issue. We are tracking this problem in the earlier #1092, which you can follow for updates. As a workaround for imported key pairs you can setup your configuration similar to the below:

resource "aws_key_pair" "example" {
  key_name   = "example"
  public_key = ""

  lifecycle {
    ignore_changes = ["public_key"]
  }
}

[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!