[Bug]: elbv2/lb: Able to create duplicately named LB

[YakDriver]

Terraform Core Version

1.5.5

AWS Provider Version

5.11.0

Affected Resource(s)

• aws_lb

Expected Behavior

Should not create when another load balancer already exists with the same name.

Actual Behavior

Right now it is possible to create a load balancer with an aws_lb resource, then (probably accidentally) create another load balancer with the same configuration, but rather than this resulting in a new load balancer, the previously created, existing load balancer is returned. The load balancer is now "managed" by two resources in Terraform, and it is not possible to remove one of them without terraform state rm since removing either of the resources results in deleting the one load balancer.

The accidental "creation" of two Terraform aws_lb resources that manage the same aws_lb, where there is no way to then remove one of them without either destroying the lb or using terraform state rm.

Relevant Error/Panic Output Snippet

No response

Terraform Configuration Files

resource "aws_lb" "test" {
  name            = "olnebuv"
  internal        = true
  security_groups = [aws_security_group.test.id]
  subnets         = aws_subnet.test[*].id

  idle_timeout               = 30
  enable_deletion_protection = false

  tags = {
    Name = "olnebuv"
  }
}

resource "aws_lb" "test2" {
  name            = "olnebuv"
  internal        = true
  security_groups = [aws_security_group.test.id]
  subnets         = aws_subnet.test[*].id

  idle_timeout               = 30
  enable_deletion_protection = false

  tags = {
    Name = "olnebuv"
  }
}

Steps to Reproduce

1. Apply configuration

Debug Output

No response

Panic Output

No response

Important Factoids

No response

References

No response

Would you like to implement a fix?

None

[github-actions]

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[github-actions]

This functionality has been released in v5.12.0 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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