aws_instance to any output resourse depends_on reverse fails on restore if tf state still stores deleted instance

[vassav-nn]

Hi there,

Terraform CLI and Terraform AWS Provider Version

0.12.28 provider.aws: version = "~> 3.23"

Affected Resource(s)

Please list the resources as a list, for example:

• aws_instance
• aws_route53_record (for example. Same with kubernetes_service or other code uses outputs)

Expected Behavior

Restore ec2 instances and recreate of dns recors for code like:

modules/aws/ec2 uses public resource "aws_instance" "this"

module "ec2_servers" {
  source                 = "../../modules/aws/ec2"
  instance_count         = var.aws.srv.count > 0 ? var.aws.srv.count : 0
  ... other params ...
}

resource "aws_route53_record" "srv" {
  count   = var.aws.srv.count > 0 ? var.aws.srv.count : 0
  zone_id = data.aws_route53_zone.dns.zone_id
  name    = "srv${count.index}.${data.aws_route53_zone.dns.name}"
  type    = "A"
  ttl     = "300"
  records = ["${module.ec2_servers.private_ip[count.index]}"]
  depends_on = [module.ec2_servers]
}

Actual Behavior

Got error

on srv.tf line 178, in resource "aws_route53_record" "srv":
 178:   records = ["${module.ec2_servers.private_ip[count.index]}"]
----------------
count.index is 1
module.ec2_servers.private_dns is tuple with 1 element
 The given key does not identify an element in this collection value.

Same for use any output resourse

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. terraform apply Creates resources

2. manually terminate es2 and delete records

3. terraform apply

Important Factoids

Err can be not reproduces if depends resource is exists, it vill restore ec2 and upd record

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