terraform-aws-alb

Terraform module to create an ALB, default ALB listener(s), and a default ALB target and related security groups.

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Security & Compliance

Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.

Benchmark	Description
	Infrastructure Security Compliance
	Center for Internet Security, KUBERNETES Compliance
	Center for Internet Security, AWS Compliance
	Center for Internet Security, AZURE Compliance
	Payment Card Industry Data Security Standards Compliance
	National Institute of Standards and Technology Compliance
	Information Security Management System, ISO/IEC 27001 Compliance
	Service Organization Control 2 Compliance
	Center for Internet Security, GCP Compliance
	Health Insurance Portability and Accountability Compliance

Usage

IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.

Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.

For a complete example, see examples/complete.

For automated test of the complete example using bats and Terratest, see test.

  provider "aws" {
    region = var.region
  }

  module "vpc" {
    source     = "git::https://github.com/cloudposse/terraform-aws-vpc.git?ref=tags/0.8.1"
    namespace  = var.namespace
    stage      = var.stage
    name       = var.name
    delimiter  = var.delimiter
    attributes = var.attributes
    cidr_block = var.vpc_cidr_block
    tags       = var.tags
  }

  module "subnets" {
    source               = "git::https://github.com/cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.16.1"
    availability_zones   = var.availability_zones
    namespace            = var.namespace
    stage                = var.stage
    name                 = var.name
    attributes           = var.attributes
    delimiter            = var.delimiter
    vpc_id               = module.vpc.vpc_id
    igw_id               = module.vpc.igw_id
    cidr_block           = module.vpc.vpc_cidr_block
    nat_gateway_enabled  = false
    nat_instance_enabled = false
    tags                 = var.tags
  }

  module "alb" {
    source = "cloudposse/alb/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version     = "x.x.x"
    namespace                               = var.namespace
    stage                                   = var.stage
    name                                    = var.name
    attributes                              = var.attributes
    delimiter                               = var.delimiter
    vpc_id                                  = module.vpc.vpc_id
    security_group_ids                      = [module.vpc.vpc_default_security_group_id]
    subnet_ids                              = module.subnets.public_subnet_ids
    internal                                = var.internal
    http_enabled                            = var.http_enabled
    http_redirect                           = var.http_redirect
    access_logs_enabled                     = var.access_logs_enabled
    alb_access_logs_s3_bucket_force_destroy = var.alb_access_logs_s3_bucket_force_destroy
    cross_zone_load_balancing_enabled       = var.cross_zone_load_balancing_enabled
    http2_enabled                           = var.http2_enabled
    idle_timeout                            = var.idle_timeout
    ip_address_type                         = var.ip_address_type
    deletion_protection_enabled             = var.deletion_protection_enabled
    deregistration_delay                    = var.deregistration_delay
    health_check_path                       = var.health_check_path
    health_check_timeout                    = var.health_check_timeout
    health_check_healthy_threshold          = var.health_check_healthy_threshold
    health_check_unhealthy_threshold        = var.health_check_unhealthy_threshold
    health_check_interval                   = var.health_check_interval
    health_check_matcher                    = var.health_check_matcher
    target_group_port                       = var.target_group_port
    target_group_target_type                = var.target_group_target_type
    stickiness                              = var.stickiness
    tags                                    = var.tags
  }

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

Name	Version
terraform	>= 0.13.0
aws	>= 2.54, != 4.0.0, != 4.1.0, != 4.2.0, != 4.3.0, != 4.4.0, != 4.5.0, != 4.6.0, != 4.7.0, != 4.8.0
local	>= 1.3
null	>= 2.0

Providers

Name	Version
aws	>= 2.54, != 4.0.0, != 4.1.0, != 4.2.0, != 4.3.0, != 4.4.0, != 4.5.0, != 4.6.0, != 4.7.0, != 4.8.0

Modules

Name	Source	Version
access_logs	cloudposse/lb-s3-bucket/aws	0.14.1
default_load_balancer_label	cloudposse/label/null	0.25.0
default_target_group_label	cloudposse/label/null	0.25.0
this	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_lb.default	resource
aws_lb_listener.http_forward	resource
aws_lb_listener.http_redirect	resource
aws_lb_listener.https	resource
aws_lb_listener_certificate.https_sni	resource
aws_lb_target_group.default	resource
aws_security_group.default	resource
aws_security_group_rule.egress	resource
aws_security_group_rule.http_ingress	resource
aws_security_group_rule.https_ingress	resource

Inputs

Name	Description	Type	Default	Required
access_logs_enabled	A boolean flag to enable/disable access_logs	`bool`	`true`	no
access_logs_prefix	The S3 log bucket prefix	`string`	`""`	no
access_logs_s3_bucket_id	An external S3 Bucket name to store access logs in. If specified, no logging bucket will be created.	`string`	`null`	no
additional_certs	A list of additonal certs to add to the https listerner	`list(string)`	`[]`	no
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
alb_access_logs_s3_bucket_force_destroy	A boolean that indicates all objects should be deleted from the ALB access logs S3 bucket so that the bucket can be destroyed without error	`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
certificate_arn	The ARN of the default SSL certificate for HTTPS listener	`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
cross_zone_load_balancing_enabled	A boolean flag to enable/disable cross zone load balancing	`bool`	`true`	no
default_target_group_enabled	Whether the default target group should be created or not.	`bool`	`true`	no
deletion_protection_enabled	A boolean flag to enable/disable deletion protection for ALB	`bool`	`false`	no
delimiter	Delimiter to be used between ID elements. Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
deregistration_delay	The amount of time to wait in seconds before changing the state of a deregistering target to unused	`number`	`15`	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
drop_invalid_header_fields	Indicates whether HTTP headers with header fields that are not valid are removed by the load balancer (true) or routed to targets (false).	`bool`	`false`	no
enable_glacier_transition	Enables the transition of lb logs to AWS Glacier	`bool`	`true`	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
expiration_days	Number of days after which to expunge s3 logs	`number`	`90`	no
glacier_transition_days	Number of days after which to move s3 logs to the glacier storage tier	`number`	`60`	no
health_check_healthy_threshold	The number of consecutive health checks successes required before considering an unhealthy target healthy	`number`	`2`	no
health_check_interval	The duration in seconds in between health checks	`number`	`15`	no
health_check_matcher	The HTTP response codes to indicate a healthy check	`string`	`"200-399"`	no
health_check_path	The destination for the health check request	`string`	`"/"`	no
health_check_port	The port to use for the healthcheck	`string`	`"traffic-port"`	no
health_check_timeout	The amount of time to wait in seconds before failing a health check request	`number`	`10`	no
health_check_unhealthy_threshold	The number of consecutive health check failures required before considering the target unhealthy	`number`	`2`	no
http2_enabled	A boolean flag to enable/disable HTTP/2	`bool`	`true`	no
http_enabled	A boolean flag to enable/disable HTTP listener	`bool`	`true`	no
http_ingress_cidr_blocks	List of CIDR blocks to allow in HTTP security group	`list(string)`	[ "0.0.0.0/0" ]	no
http_ingress_prefix_list_ids	List of prefix list IDs for allowing access to HTTP ingress security group	`list(string)`	`[]`	no
http_port	The port for the HTTP listener	`number`	`80`	no
http_redirect	A boolean flag to enable/disable HTTP redirect to HTTPS	`bool`	`false`	no
https_enabled	A boolean flag to enable/disable HTTPS listener	`bool`	`false`	no
https_ingress_cidr_blocks	List of CIDR blocks to allow in HTTPS security group	`list(string)`	[ "0.0.0.0/0" ]	no
https_ingress_prefix_list_ids	List of prefix list IDs for allowing access to HTTPS ingress security group	`list(string)`	`[]`	no
https_port	The port for the HTTPS listener	`number`	`443`	no
https_ssl_policy	The name of the SSL Policy for the listener	`string`	`"ELBSecurityPolicy-2015-05"`	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
idle_timeout	The time in seconds that the connection is allowed to be idle	`number`	`60`	no
internal	A boolean flag to determine whether the ALB should be internal	`bool`	`false`	no
ip_address_type	The type of IP addresses used by the subnets for your load balancer. The possible values are `ipv4` and `dualstack`.	`string`	`"ipv4"`	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
lifecycle_rule_enabled	A boolean that indicates whether the s3 log bucket lifecycle rule should be enabled.	`bool`	`false`	no
listener_http_fixed_response	Have the HTTP listener return a fixed response for the default action.	object({ content_type = string message_body = string status_code = string })	`null`	no
listener_https_fixed_response	Have the HTTPS listener return a fixed response for the default action.	object({ content_type = string message_body = string status_code = string })	`null`	no
load_balancer_name	The name for the default load balancer, uses a module label name if left empty	`string`	`""`	no
load_balancer_name_max_length	The max length of characters for the load balancer.	`number`	`32`	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
noncurrent_version_expiration_days	Specifies when noncurrent s3 log versions expire	`number`	`90`	no
noncurrent_version_transition_days	Specifies when noncurrent s3 log versions transition	`number`	`30`	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
security_group_enabled	Enables the security group	`bool`	`true`	no
security_group_ids	A list of additional security group IDs to allow access to ALB	`list(string)`	`[]`	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
standard_transition_days	Number of days to persist logs in standard storage tier before moving to the infrequent access tier	`number`	`30`	no
stickiness	Target group sticky configuration	object({ cookie_duration = number enabled = bool })	`null`	no
subnet_ids	A list of subnet IDs to associate with ALB	`list(string)`	n/a	yes
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_group_additional_tags	The additional tags to apply to the target group	`map(string)`	`{}`	no
target_group_name	The name for the default target group, uses a module label name if left empty	`string`	`""`	no
target_group_name_max_length	The max length of characters for the target group.	`number`	`32`	no
target_group_port	The port for the default target group	`number`	`80`	no
target_group_protocol	The protocol for the default target group HTTP or HTTPS	`string`	`"HTTP"`	no
target_group_target_type	The type (`instance`, `ip` or `lambda`) of targets that can be registered with the target group	`string`	`"ip"`	no
tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no
vpc_id	VPC ID to associate with ALB	`string`	n/a	yes

Outputs

Name	Description
access_logs_bucket_id	The S3 bucket ID for access logs
alb_arn	The ARN of the ALB
alb_arn_suffix	The ARN suffix of the ALB
alb_dns_name	DNS name of ALB
alb_name	The ARN suffix of the ALB
alb_zone_id	The ID of the zone which ALB is provisioned
default_target_group_arn	The default target group ARN
http_listener_arn	The ARN of the HTTP forwarding listener
http_redirect_listener_arn	The ARN of the HTTP to HTTPS redirect listener
https_listener_arn	The ARN of the HTTPS listener
listener_arns	A list of all the listener ARNs
security_group_id	The security group ID of the ALB

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terraform-aws-alb-ingress - Terraform module to provision an HTTP style ingress rule based on hostname and path for an ALB

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Copyright

License

See LICENSE for full details.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
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  https://www.apache.org/licenses/LICENSE-2.0

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Contributors

Erik Osterman	Igor Rodionov	Andriy Knysh	Sarkis Varozian	Adam Crews

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README.md

README.md

terraform-aws-alb

Security & Compliance

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Inputs

Outputs

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terraform-aws-alb

Security & Compliance

Usage

Makefile Targets

Requirements

Providers

Modules

Resources

Inputs

Outputs

Share the Love

Related Projects

Help

DevOps Accelerator for Startups

Slack Community

Discourse Forums

Newsletter

Office Hours

Contributing

Bug Reports & Feature Requests

Developing

Copyright

License

Trademarks

About

Contributors