GitHub - cloudposse/terraform-aws-alb-ingress: Terraform module to provision an HTTP style ingress rule based on hostname and path for an ALB using target groups

Terraform module to provision an HTTP style ALB ingress based on hostname and/or path.

ALB ingress can be provisioned without authentication, or using Cognito or OIDC authentication.

Tip

👽 Use Atmos with Terraform

Cloud Posse uses atmos to easily orchestrate multiple environments using Terraform.
Works with Github Actions, Atlantis, or Spacelift.

Watch demo of using Atmos with Terraform

Example of running atmos to manage infrastructure from our Quick Start tutorial.

Usage

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     = "cloudposse/vpc/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"

  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 = "cloudposse/dynamic-subnets/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"

  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
  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

  tags = var.tags
}

module "alb_ingress" {
  source = "cloudposse/alb-ingress/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
  authentication_type                 = var.authentication_type
  unauthenticated_priority            = var.unauthenticated_priority
  unauthenticated_paths               = var.unauthenticated_paths
  slow_start                          = var.slow_start
  stickiness_enabled                  = var.stickiness_enabled
  default_target_group_enabled        = false
  target_group_arn                    = module.alb.default_target_group_arn
  unauthenticated_listener_arns       = [module.alb.http_listener_arn]

  tags = var.tags
}

Important

In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

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	>= 1.0
aws	>= 4.0

Providers

Name	Version
aws	>= 4.0

Modules

Name	Source	Version
target_group	cloudposse/label/null	0.25.0
this	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_lb_listener_rule.authenticated_hosts_cognito	resource
aws_lb_listener_rule.authenticated_hosts_oidc	resource
aws_lb_listener_rule.authenticated_hosts_paths_cognito	resource
aws_lb_listener_rule.authenticated_hosts_paths_oidc	resource
aws_lb_listener_rule.authenticated_paths_cognito	resource
aws_lb_listener_rule.authenticated_paths_oidc	resource
aws_lb_listener_rule.unauthenticated_hosts	resource
aws_lb_listener_rule.unauthenticated_hosts_paths	resource
aws_lb_listener_rule.unauthenticated_paths	resource
aws_lb_target_group.default	resource
aws_lb_target_group.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
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
authenticated_hosts	Authenticated hosts to match in Hosts header	`list(string)`	`[]`	no
authenticated_listener_arns	A list of authenticated ALB listener ARNs to attach ALB listener rules to	`list(string)`	`[]`	no
authenticated_paths	Authenticated path pattern to match (a maximum of 1 can be defined)	`list(string)`	`[]`	no
authenticated_priority	The priority for the rules with authentication, between 1 and 50000 (1 being highest priority). Must be different from `unauthenticated_priority` since a listener can't have multiple rules with the same priority	`number`	`null`	no
authentication_cognito_on_unauthenticated_request	Cognito unauthenticated behavior, deny, allow, or authenticate	`string`	`"authenticate"`	no
authentication_cognito_request_extra_params	Cognito query parameters to include in redirect request	`map(string)`	`null`	no
authentication_cognito_scope	Cognito scope, which should be a space separated string of requested scopes (see https://openid.net/specs/openid-connect-core-1_0.html#ScopeClaims)	`string`	`null`	no
authentication_cognito_user_pool_arn	Cognito User Pool ARN	`string`	`""`	no
authentication_cognito_user_pool_client_id	Cognito User Pool Client ID	`string`	`""`	no
authentication_cognito_user_pool_domain	Cognito User Pool Domain. The User Pool Domain should be set to the domain prefix (`xxx`) instead of full domain (https://xxx.auth.us-west-2.amazoncognito.com)	`string`	`""`	no
authentication_oidc_authorization_endpoint	OIDC Authorization Endpoint	`string`	`""`	no
authentication_oidc_client_id	OIDC Client ID	`string`	`""`	no
authentication_oidc_client_secret	OIDC Client Secret	`string`	`""`	no
authentication_oidc_issuer	OIDC Issuer	`string`	`""`	no
authentication_oidc_on_unauthenticated_request	OIDC unauthenticated behavior, deny, allow, or authenticate	`string`	`"authenticate"`	no
authentication_oidc_request_extra_params	OIDC query parameters to include in redirect request	`map(string)`	`null`	no
authentication_oidc_scope	OIDC scope, which should be a space separated string of requested scopes (see https://openid.net/specs/openid-connect-core-1_0.html#ScopeClaims, and https://developers.google.com/identity/protocols/oauth2/openid-connect#scope-param for an example set of scopes when using Google as the IdP)	`string`	`null`	no
authentication_oidc_token_endpoint	OIDC Token Endpoint	`string`	`""`	no
authentication_oidc_user_info_endpoint	OIDC User Info Endpoint	`string`	`""`	no
authentication_type	Authentication type. Supported values are `COGNITO` and `OIDC`	`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
default_target_group_enabled	Enable/disable creation of the default target group	`bool`	`true`	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 while deregistering target	`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
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
health_check_enabled	Indicates whether health checks are enabled. Defaults to `true`	`bool`	`true`	no
health_check_healthy_threshold	The number of consecutive health checks successes required before 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 to connect with the target. Valid values are either ports 1-65536, or `traffic-port`. Defaults to `traffic-port`	`string`	`"traffic-port"`	no
health_check_protocol	The protocol to use to connect with the target. Defaults to `HTTP`. Not applicable when `target_type` is `lambda`	`string`	`"HTTP"`	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 unhealthy	`number`	`2`	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
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
listener_http_header_conditions	A list of http header conditions to apply to the listener.	list(object({ name = string value = list(string) }))	`[]`	no
load_balancing_algorithm_type	Determines how the load balancer selects targets when routing requests. Only applicable for Application Load Balancer Target Groups. The value is round_robin, least_outstanding_requests or weighted_random. The default is round_robin.	`string`	`"round_robin"`	no
load_balancing_anomaly_mitigation	Determines whether to enable target anomaly mitigation. Only supported by the weighted_random load balancing algorithm type. Valid values are 'on' or 'off'.	`string`	`"off"`	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
port	The port for the created ALB target group (if `target_group_arn` is not set)	`number`	`80`	no
protocol	The protocol for the created ALB target group (if `target_group_arn` is not set)	`string`	`"HTTP"`	no
protocol_version	Only applicable when protocol is `HTTP` or `HTTPS`. The protocol version. Specify GRPC to send requests to targets using gRPC. Specify HTTP2 to send requests to targets using HTTP/2. The default is `HTTP1`, which sends requests to targets using HTTP/1.1	`string`	`"HTTP1"`	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
slow_start	The amount of time for targets to warm up before the load balancer sends them a full share of requests. The range is 30-900 seconds or 0 to disable. The default value is `0` seconds	`number`	`0`	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
stickiness_cookie_duration	The time period, in seconds, during which requests from a client should be routed to the same target. After this time period expires, the load balancer-generated cookie is considered stale. The range is 1 second to 1 week (604800 seconds). The default value is 1 day (86400 seconds)	`number`	`86400`	no
stickiness_enabled	Boolean to enable / disable `stickiness`. Default is `true`	`bool`	`true`	no
stickiness_type	The type of sticky sessions. The only current possible value is `lb_cookie`	`string`	`"lb_cookie"`	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_group_arn	Existing ALB target group ARN. If provided, set `default_target_group_enabled` to `false` to disable creation of the default target group	`string`	`""`	no
target_group_name	Override the target group name	`string`	`""`	no
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
unauthenticated_hosts	Unauthenticated hosts to match in Hosts header	`list(string)`	`[]`	no
unauthenticated_listener_arns	A list of unauthenticated ALB listener ARNs to attach ALB listener rules to	`list(string)`	`[]`	no
unauthenticated_paths	Unauthenticated path pattern to match (a maximum of 1 can be defined)	`list(string)`	`[]`	no
unauthenticated_priority	The priority for the rules without authentication, between 1 and 50000 (1 being highest priority). Must be different from `authenticated_priority` since a listener can't have multiple rules with the same priority	`number`	`null`	no
vpc_id	The VPC ID where generated ALB target group will be provisioned (if `target_group_arn` is not set)	`string`	n/a	yes

Outputs

Name	Description
target_group_arn	ALB Target Group ARN
target_group_arn_suffix	ALB Target Group ARN suffix
target_group_name	ALB Target Group name

Related Projects

Check out these related projects.

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

Tip

Use Terraform Reference Architectures for AWS

Use Cloud Posse's ready-to-go terraform architecture blueprints for AWS to get up and running quickly.

✅ We build it together with your team.
✅ Your team owns everything.
✅ 100% Open Source and backed by fanatical support.

📚 Learn More

Cloud Posse is the leading DevOps Accelerator for funded startups and enterprises.

Your team can operate like a pro today.

Ensure that your team succeeds by using Cloud Posse's proven process and turnkey blueprints. Plus, we stick around until you succeed.

Day-0: Your Foundation for Success

Reference Architecture. You'll get everything you need from the ground up built using 100% infrastructure as code.
Deployment Strategy. Adopt a proven deployment strategy with GitHub Actions, enabling automated, repeatable, and reliable software releases.
Site Reliability Engineering. Gain total visibility into your applications and services with Datadog, ensuring high availability and performance.
Security Baseline. Establish a secure environment from the start, with built-in governance, accountability, and comprehensive audit logs, safeguarding your operations.
GitOps. Empower your team to manage infrastructure changes confidently and efficiently through Pull Requests, leveraging the full power of GitHub Actions.

Day-2: Your Operational Mastery

Training. Equip your team with the knowledge and skills to confidently manage the infrastructure, ensuring long-term success and self-sufficiency.
Support. Benefit from a seamless communication over Slack with our experts, ensuring you have the support you need, whenever you need it.
Troubleshooting. Access expert assistance to quickly resolve any operational challenges, minimizing downtime and maintaining business continuity.
Code Reviews. Enhance your team’s code quality with our expert feedback, fostering continuous improvement and collaboration.
Bug Fixes. Rely on our team to troubleshoot and resolve any issues, ensuring your systems run smoothly.
Migration Assistance. Accelerate your migration process with our dedicated support, minimizing disruption and speeding up time-to-value.
Customer Workshops. Engage with our team in weekly workshops, gaining insights and strategies to continuously improve and innovate.

✨ Contributing

This project is under active development, and we encourage contributions from our community.

Many thanks to our outstanding contributors:

For 🐛 bug reports & feature requests, please use the issue tracker.

In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

Review our Code of Conduct and Contributor Guidelines.
Fork the repo on GitHub
Clone the project to your own machine
Commit changes to your own branch
Push your work back up to your fork
Submit a Pull Request so that we can review your changes

NOTE: Be sure to merge the latest changes from "upstream" before making a pull request!

🌎 Slack Community

Join our Open Source Community on Slack. It's FREE for everyone! Our "SweetOps" community is where you get to talk with others who share a similar vision for how to rollout and manage infrastructure. This is the best place to talk shop, ask questions, solicit feedback, and work together as a community to build totally sweet infrastructure.

📰 Newsletter

Sign up for our newsletter and join 3,000+ DevOps engineers, CTOs, and founders who get insider access to the latest DevOps trends, so you can always stay in the know. Dropped straight into your Inbox every week — and usually a 5-minute read.

📆 Office Hours

Join us every Wednesday via Zoom for your weekly dose of insider DevOps trends, AWS news and Terraform insights, all sourced from our SweetOps community, plus a live Q&A that you can’t find anywhere else. It's FREE for everyone!

License

Preamble to the Apache License, Version 2.0

Complete license is available in the LICENSE file.

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
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.

Trademarks

All other trademarks referenced herein are the property of their respective owners.

Name		Name	Last commit message	Last commit date
Latest commit History 75 Commits
.github		.github
docs		docs
examples/complete		examples/complete
test		test
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
README.yaml		README.yaml
context.tf		context.tf
main.tf		main.tf
outputs.tf		outputs.tf
variables.tf		variables.tf
versions.tf		versions.tf

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Repository files navigation

👽 Use Atmos with Terraform

Usage

Makefile Targets

Requirements

Providers

Modules

Resources

Inputs

Outputs

Related Projects

Use Terraform Reference Architectures for AWS

Day-0: Your Foundation for Success

Day-2: Your Operational Mastery

✨ Contributing

🌎 Slack Community

📰 Newsletter

📆 Office Hours

License

Trademarks

About

Releases 48

Sponsor this project

Packages

Contributors 28

Languages

License

cloudposse/terraform-aws-alb-ingress

Folders and files

Latest commit

History

Repository files navigation

👽 Use Atmos with Terraform

Usage

Makefile Targets

Requirements

Providers

Modules

Resources

Inputs

Outputs

Related Projects

Use Terraform Reference Architectures for AWS

Day-0: Your Foundation for Success

Day-2: Your Operational Mastery

✨ Contributing

🌎 Slack Community

📰 Newsletter

📆 Office Hours

License

Trademarks

About

Topics

Resources

License

Code of conduct

Security policy

Stars

Watchers

Forks

Releases 48

Sponsor this project

Packages 0

Contributors 28

Languages

Packages