Module: route53-alias

Terraform module that implements "vanity" host names (e.g. brand.com) as ALIAS records to another Route53 DNS resource record (e.g. ELB/ALB, S3 Bucket Endpoint or CloudFront Distribution). Unlike CNAME records, the synthetic ALIAS record works with zone apexes.

Usage

This will define a A resource record for www.example.com as an alias of the aws_elb.example.dns_name.

module "production_www" {
  source = "cloudposse/route53-alias/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"
  aliases         = ["www.example.com.", "static1.cdn.example.com.", "static2.cdn.example.com"]
  parent_zone_id  = var.parent_zone_id
  target_dns_name = aws_elb.example.dns_name
  target_zone_id  = aws_elb.example.zone_id
}

Requirements

Name	Version
terraform	>= 0.13.0
aws	>= 2.0
local	>= 1.2

Providers

Name	Version
aws	>= 2.0

Modules

Name	Source	Version
this	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_route53_record.default	resource
aws_route53_record.ipv6	resource
aws_route53_zone.default	data source

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id. This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration.	map(string)	{}	no
aliases	List of aliases	list(string)	n/a	yes
allow_overwrite	Allow creation of this record in Terraform to overwrite an existing record, if any. This does not affect the ability to update the record in Terraform and does not prevent other resources within Terraform or manual Route 53 changes outside Terraform from overwriting this record. false by default. This configuration is not recommended for most environments	bool	false	no
attributes	ID element. Additional attributes (e.g. workers or cluster) to add to id, in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the delimiter and treated as a single ID element.	list(string)	[]	no
context	Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as null to use default value. Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged.	any	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "descriptor_formats": {}, "enabled": true, "environment": null, "id_length_limit": null, "label_key_case": null, "label_order": [], "label_value_case": null, "labels_as_tags": [ "unset" ], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {}, "tenant": null }	no
delimiter	Delimiter to be used between ID elements. Defaults to - (hyphen). Set to "" to use no delimiter at all.	string	null	no
descriptor_formats	Describe additional descriptors to be output in the descriptors output map. Map of maps. Keys are names of descriptors. Values are maps of the form {<br/> format = string<br/> labels = list(string)<br/>} (Type is any so the map values can later be enhanced to provide additional options.) format is a Terraform format string to be passed to the format() function. labels is a list of labels, in order, to pass to format() function. Label values will be normalized before being passed to format() so they will be identical to how they appear in id. Default is {} (descriptors output will be empty).	any	{}	no
enabled	Set to false to prevent the module from creating any resources	bool	null	no
environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	string	null	no
evaluate_target_health	Set to true if you want Route 53 to determine whether to respond to DNS queries	bool	false	no
id_length_limit	Limit id to this many characters (minimum 6). Set to 0 for unlimited length. Set to null for keep the existing setting, which defaults to 0. Does not affect id_full.	number	null	no
ipv6_enabled	Set to true to enable an AAAA DNS record to be set as well as the A record	bool	false	no
label_key_case	Controls the letter case of the tags keys (label names) for tags generated by this module. Does not affect keys of tags passed in via the tags input. Possible values: lower, title, upper. Default value: title.	string	null	no
label_order	The order in which the labels (ID elements) appear in the id. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	list(string)	null	no
label_value_case	Controls the letter case of ID elements (labels) as included in id, set as tag values, and output by this module individually. Does not affect values of tags passed in via the tags input. Possible values: lower, title, upper and none (no transformation). Set this to title and set delimiter to "" to yield Pascal Case IDs. Default value: lower.	string	null	no
labels_as_tags	Set of labels (ID elements) to include as tags in the tags output. Default is to include all labels. Tags with empty values will not be included in the tags output. Set to [] to suppress all generated tags. Notes: The value of the name tag, if included, will be the id, not the name. Unlike other null-label inputs, the initial setting of labels_as_tags cannot be changed in later chained modules. Attempts to change it will be silently ignored.	set(string)	[ "default" ]	no
name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a tag. The "name" tag is set to the full id string. There is no tag with the value of the name input.	string	null	no
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
parent_zone_id	ID of the hosted zone to contain this record (or specify parent_zone_name)	string	""	no
parent_zone_name	Name of the hosted zone to contain this record (or specify parent_zone_id)	string	""	no
private_zone	Is this a private hosted zone?	bool	false	no
regex_replace_chars	Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.	string	null	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	string	null	no
tags	Additional tags (e.g. {'BusinessUnit': 'XYZ'}). Neither the tag keys nor the tag values will be modified by this module.	map(string)	{}	no
target_dns_name	DNS name of target resource (e.g. ALB, ELB)	string	n/a	yes
target_zone_id	ID of target resource (e.g. ALB, ELB)	string	n/a	yes
tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	string	null	no

Outputs

Name	Description
hostnames	List of DNS records
parent_zone_id	ID of the hosted zone to contain the records
parent_zone_name	Name of the hosted zone to contain the records