Terraform, ElasticSearch, module, cloudposse/terraform-aws-elasticsearch - amazon-web-services

Question

I use the module, https://github.com/cloudposse/terraform-aws-elasticsearch to provision ElasticSearch. I set kibana_hostname_enabled = false, and domain_hostname_enabled = false. Per document, dns_zone_id is not required. But, it asks for dns zone id when I run terraform plan.
terraform plan
var.dns_zone_id
Route53 DNS Zone ID to add hostname records for Elasticsearch domain and Kibana
Enter a value:
I prefer not to use Route53. How to avoid dns_zone_id? Below is the code:
module "elasticsearch" {
source = "git::https://github.com/cloudposse/terraform-aws-elasticsearch.git?ref=tags/0.24.1"
security_groups = [data.terraform_remote_state.vpc.outputs.default_security_group_id]
vpc_id = data.terraform_remote_state.vpc.outputs.vpc_id
zone_awareness_enabled = var.zone_awareness_enabled
subnet_ids = slice(data.terraform_remote_state.vpc.outputs.private_subnets, 0, 2)
elasticsearch_version = var.elasticsearch_version
instance_type = var.instance_type
instance_count = var.instance_count
encrypt_at_rest_enabled = var.encrypt_at_rest_enabled
dedicated_master_enabled = var.dedicated_master_enabled
create_iam_service_linked_role = var.create_iam_service_linked_role
kibana_subdomain_name = var.kibana_subdomain_name
ebs_volume_size = var.ebs_volume_size
#dns_zone_id = var.dns_zone_id
kibana_hostname_enabled = false
domain_hostname_enabled = false
iam_role_arns = ["*"]
iam_actions = ["es:*"]
enabled = var.enabled
vpc_enabled = var.vpc_enabled
name = var.name
tags = var.tags
advanced_options = {
"rest.action.multi.allow_explicit_index" = "true"
}
}

Answer 1

In your code you have the following:
#dns_zone_id = var.dns_zone_id
So the plan asks for your var.dns_zone_id which you defined, not from the module.

Answer 2

By setting kibana_hostname_enabled = false, will terraform provide a random url/endpoint for accessing Kibana?