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This component is responsible for requesting an ACM certificate for a domain and adding a CNAME record to the DNS zone to complete certificate validation.

The ACM component is to manage an unlimited number of certificates, predominantly for vanity domains. While the dns-primary component has the ability to generate ACM certificates, it is very opinionated and can only manage one zone. In reality, companies have many branded domains associated with a load balancer, so we need to be able to generate more complicated certificates.

We have, as a convenience, the ability to create an ACM certificate as part of creating a DNS zone, whether primary or delegated. That convenience is limited to creating example.com and *.example.com when creating a zone for example.com. For example, Acme has delegated acct.acme.com and in addition to *.acct.acme.com needed an ACM certificate for *.usw2.acct.acme.com, so we use the ACM component to provision that, rather than extend the DNS primary or delegated components to take a list of additional certificates. Both are different views on the Single Responsibility Principle.

Usage

Stack Level: Global or Regional

Here's an example snippet for how to use this component.

components:
  terraform:
    acm:
      settings:
        spacelift:
          workspace_enabled: true
      vars:
        enabled: true
        domain_name: acme.com
        process_domain_validation_options: false
        validation_method: DNS
        # NOTE: The following subject alternative name is automatically added by the module.
        #       Additional entries can be added by providing this input.
        # subject_alternative_names:
        #   - "*.acme.com"

ACM using a private CA

components:
  terraform:
    acm:
      settings:
        spacelift:
          workspace_enabled: true
      vars:
        enabled: true
        domain_name: acme.com
        process_domain_validation_options: false
        dns_private_zone_enabled: true
        certificate_authority_component_name: private-ca-subordinate
        certificate_authority_stage_name: pca
        certificate_authority_environment_name: use2
        certificate_authority_component_key: subordinate

Requirements

Name	Version
<a name="requirement_terraform"></a> terraform	>= 1.0.0
<a name="requirement_aws"></a> aws	>= 4.9.0

Providers

Name	Version
<a name="provider_aws"></a> aws	>= 4.9.0

Modules

Name	Source	Version
<a name="module_acm"></a> acm	cloudposse/acm-request-certificate/aws	0.16.3
<a name="module_dns_delegated"></a> dns_delegated	cloudposse/stack-config/yaml//modules/remote-state	1.5.0
<a name="module_iam_roles"></a> iam_roles	../account-map/modules/iam-roles	n/a
<a name="module_private_ca"></a> private_ca	cloudposse/stack-config/yaml//modules/remote-state	1.5.0
<a name="module_this"></a> this	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_ssm_parameter.acm_arn	resource
aws_route53_zone.default	data source

Inputs

Name	Description	Type	Default	Required
<a name="input_additional_tag_map"></a> additional_tag_map	Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`.<br/>This is for some rare cases where resources want additional configuration of tags<br/>and therefore take a list of maps with tag key, value, and additional configuration.	`map(string)`	`{}`	no
<a name="input_attributes"></a> attributes	ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br/>in the order they appear in the list. New attributes are appended to the<br/>end of the list. The elements of the list are joined by the `delimiter`<br/>and treated as a single ID element.	`list(string)`	`[]`	no
<a name="input_certificate_authority_component_key"></a> certificate_authority_component_key	Use this component key e.g. `root` or `mgmt` to read from the remote state to get the certificate_authority_arn if using an authority type of SUBORDINATE	`string`	`null`	no
<a name="input_certificate_authority_component_name"></a> certificate_authority_component_name	Use this component name to read from the remote state to get the certificate_authority_arn if using an authority type of SUBORDINATE	`string`	`null`	no
<a name="input_certificate_authority_enabled"></a> certificate_authority_enabled	Whether to use the certificate authority or not	`bool`	`false`	no
<a name="input_certificate_authority_environment_name"></a> certificate_authority_environment_name	Use this environment name to read from the remote state to get the certificate_authority_arn if using an authority type of SUBORDINATE	`string`	`null`	no
<a name="input_certificate_authority_stage_name"></a> certificate_authority_stage_name	Use this stage name to read from the remote state to get the certificate_authority_arn if using an authority type of SUBORDINATE	`string`	`null`	no
<a name="input_context"></a> context	Single object for setting entire context at once.<br/>See description of individual variables for details.<br/>Leave string and numeric variables as `null` to use default value.<br/>Individual variable settings (non-null) override settings in context object,<br/>except for attributes, tags, and additional_tag_map, which are merged.	`any`	<pre>{<br/> "additional_tag_map": {},<br/> "attributes": [],<br/> "delimiter": null,<br/> "descriptor_formats": {},<br/> "enabled": true,<br/> "environment": null,<br/> "id_length_limit": null,<br/> "label_key_case": null,<br/> "label_order": [],<br/> "label_value_case": null,<br/> "labels_as_tags": [<br/> "unset"<br/> ],<br/> "name": null,<br/> "namespace": null,<br/> "regex_replace_chars": null,<br/> "stage": null,<br/> "tags": {},<br/> "tenant": null<br/>}</pre>	no
<a name="input_delimiter"></a> delimiter	Delimiter to be used between ID elements.<br/>Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
<a name="input_descriptor_formats"></a> descriptor_formats	Describe additional descriptors to be output in the `descriptors` output map.<br/>Map of maps. Keys are names of descriptors. Values are maps of the form<br/>`{<br/> format = string<br/> labels = list(string)<br/>}`<br/>(Type is `any` so the map values can later be enhanced to provide additional options.)<br/>`format` is a Terraform format string to be passed to the `format()` function.<br/>`labels` is a list of labels, in order, to pass to `format()` function.<br/>Label values will be normalized before being passed to `format()` so they will be<br/>identical to how they appear in `id`.<br/>Default is `{}` (`descriptors` output will be empty).	`any`	`{}`	no
<a name="input_dns_delegated_component_name"></a> dns_delegated_component_name	Use this component name to read from the remote state to get the dns_delegated zone ID	`string`	`"dns-delegated"`	no
<a name="input_dns_delegated_environment_name"></a> dns_delegated_environment_name	Use this environment name to read from the remote state to get the dns_delegated zone ID	`string`	`"gbl"`	no
<a name="input_dns_delegated_stage_name"></a> dns_delegated_stage_name	Use this stage name to read from the remote state to get the dns_delegated zone ID	`string`	`null`	no
<a name="input_dns_private_zone_enabled"></a> dns_private_zone_enabled	Whether to set the zone to public or private	`bool`	`false`	no
<a name="input_domain_name"></a> domain_name	Root domain name	`string`	`""`	no
<a name="input_domain_name_prefix"></a> domain_name_prefix	Root domain name prefix to use with DNS delegated remote state	`string`	`""`	no
<a name="input_enabled"></a> enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
<a name="input_environment"></a> environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
<a name="input_id_length_limit"></a> id_length_limit	Limit `id` to this many characters (minimum 6).<br/>Set to `0` for unlimited length.<br/>Set to `null` for keep the existing setting, which defaults to `0`.<br/>Does not affect `id_full`.	`number`	`null`	no
<a name="input_label_key_case"></a> label_key_case	Controls the letter case of the `tags` keys (label names) for tags generated by this module.<br/>Does not affect keys of tags passed in via the `tags` input.<br/>Possible values: `lower`, `title`, `upper`.<br/>Default value: `title`.	`string`	`null`	no
<a name="input_label_order"></a> label_order	The order in which the labels (ID elements) appear in the `id`.<br/>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br/>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	`list(string)`	`null`	no
<a name="input_label_value_case"></a> label_value_case	Controls the letter case of ID elements (labels) as included in `id`,<br/>set as tag values, and output by this module individually.<br/>Does not affect values of tags passed in via the `tags` input.<br/>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br/>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br/>Default value: `lower`.	`string`	`null`	no
<a name="input_labels_as_tags"></a> labels_as_tags	Set of labels (ID elements) to include as tags in the `tags` output.<br/>Default is to include all labels.<br/>Tags with empty values will not be included in the `tags` output.<br/>Set to `[]` to suppress all generated tags.<br/>Notes:<br/> The value of the `name` tag, if included, will be the `id`, not the `name`.<br/> Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br/> changed in later chained modules. Attempts to change it will be silently ignored.	`set(string)`	<pre>[<br/> "default"<br/>]</pre>	no
<a name="input_name"></a> name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br/>This is the only ID element not also included as a `tag`.<br/>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.	`string`	`null`	no
<a name="input_namespace"></a> namespace	ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique	`string`	`null`	no
<a name="input_process_domain_validation_options"></a> process_domain_validation_options	Flag to enable/disable processing of the record to add to the DNS zone to complete certificate validation	`bool`	`false`	no
<a name="input_regex_replace_chars"></a> regex_replace_chars	Terraform regular expression (regex) string.<br/>Characters matching the regex will be removed from the ID elements.<br/>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
<a name="input_region"></a> region	AWS Region	`string`	n/a	yes
<a name="input_stage"></a> stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
<a name="input_subject_alternative_names"></a> subject_alternative_names	A list of domains that should be SANs in the issued certificate	`list(string)`	`[]`	no
<a name="input_subject_alternative_names_prefixes"></a> subject_alternative_names_prefixes	A list of domain prefixes to use with DNS delegated remote state that should be SANs in the issued certificate	`list(string)`	`[]`	no
<a name="input_tags"></a> tags	Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).<br/>Neither the tag keys nor the tag values will be modified by this module.	`map(string)`	`{}`	no
<a name="input_tenant"></a> tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no
<a name="input_validation_method"></a> validation_method	Method to use for validation, DNS or EMAIL	`string`	`"DNS"`	no
<a name="input_zone_name"></a> zone_name	Name of the zone in which to place the DNS validation records to validate the certificate.<br/>Typically a domain name. Default of `""` actually defaults to `domain_name`.	`string`	`""`	no

Outputs

Name	Description
<a name="output_arn"></a> arn	The ARN of the certificate
<a name="output_domain_name"></a> domain_name	Certificate domain name
<a name="output_domain_validation_options"></a> domain_validation_options	CNAME records that are added to the DNS zone to complete certificate validation
<a name="output_id"></a> id	The ID of the certificate

References

cloudposse/terraform-aws-components - Cloud Posse's upstream component

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