AWS Certificate Manager (ACM) Terraform module

Terraform module which creates ACM certificates and validates them using Route53 DNS (recommended) or e-mail.

Usage with Route53 DNS validation (recommended)

module "acm" {
  source  = "terraform-aws-modules/acm/aws"
  version = "~> 3.0"

  domain_name  = "my-domain.com"
  zone_id      = "Z2ES7B9AZ6SHAE"

  subject_alternative_names = [
    "*.my-domain.com",
    "app.sub.my-domain.com",
  ]

  wait_for_validation = true

  tags = {
    Name = "my-domain.com"
  }
}

Usage with CloudFront

# CloudFront supports US East (N. Virginia) Region only.
provider "aws" {
  alias  = "us-east-1"
  region = "us-east-1"
}

module "acm" {
  source = "terraform-aws-modules/acm/aws"

  providers = {
    aws = aws.us-east-1
  }

  domain_name = "my-domain.com"
  zone_id     = "Z266PL4W4W6MSG"

  wait_for_validation = true

  tags = {
    Name = "my-domain.com"
  }
}

Examples

Conditional creation and validation

Sometimes you need to have a way to create ACM certificate conditionally but Terraform does not allow to use count inside module block, so the solution is to specify argument create_certificate.

module "acm" {
  source = "terraform-aws-modules/acm/aws"

  create_certificate = false
  # ... omitted
}

Similarly, to disable DNS validation of ACM certificate:

module "acm" {
  source = "terraform-aws-modules/acm/aws"

  validate_certificate = false
  # ... omitted
}

Notes

For use in an automated pipeline consider setting the wait_for_validation = false to avoid waiting for validation to complete or error after a 45 minute timeout.
If you're upgrading to v2.13.0 or above, you might be subject to off-by-one validation record issue. You can solve this without compromising existing validation records by issuing terraform state rm <your_module_name>.validation[1] where [1] can be a different index # depending on the number of validation records your module creates (you can check this with terraform state list module.<your_module_name>.validation).

Requirements

Name	Version
terraform	>= 0.12.26
aws	>= 2.53

Providers

Name	Version
aws	>= 2.53

Modules

No modules.

Resources

Name	Type
aws_acm_certificate.this	resource
aws_acm_certificate_validation.this	resource
aws_route53_record.validation	resource

Inputs

Name	Description	Type	Default	Required
certificate_transparency_logging_preference	Specifies whether certificate details should be added to a certificate transparency log	`bool`	`true`	no
create_certificate	Whether to create ACM certificate	`bool`	`true`	no
dns_ttl	The TTL of DNS recursive resolvers to cache information about this record.	`number`	`60`	no
domain_name	A domain name for which the certificate should be issued	`string`	`""`	no
subject_alternative_names	A list of domains that should be SANs in the issued certificate	`list(string)`	`[]`	no
tags	A mapping of tags to assign to the resource	`map(string)`	`{}`	no
validate_certificate	Whether to validate certificate by creating Route53 record	`bool`	`true`	no
validation_allow_overwrite_records	Whether to allow overwrite of Route53 records	`bool`	`true`	no
validation_method	Which method to use for validation. DNS or EMAIL are valid, NONE can be used for certificates that were imported into ACM and then into Terraform.	`string`	`"DNS"`	no
wait_for_validation	Whether to wait for the validation to complete	`bool`	`true`	no
zone_id	The ID of the hosted zone to contain this record.	`string`	`""`	no

Outputs

Name	Description
acm_certificate_arn	The ARN of the certificate
acm_certificate_domain_validation_options	A list of attributes to feed into other resources to complete certificate validation. Can have more than one element, e.g. if SANs are defined. Only set if DNS-validation was used.
acm_certificate_validation_emails	A list of addresses that received a validation E-Mail. Only set if EMAIL-validation was used.
distinct_domain_names	List of distinct domains names used for the validation.
validation_domains	List of distinct domain validation options. This is useful if subject alternative names contain wildcards.
validation_route53_record_fqdns	List of FQDNs built using the zone domain and name.

Authors

Module is maintained by Anton Babenko with help from these awesome contributors.

License

Apache 2 Licensed. See LICENSE for full details.

License

wootcloud/terraform-aws-acm

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