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Terraform module to provision a standard ALB for HTTP/HTTP traffic

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Cloud Posse

terraform-aws-alb Build Status Latest Release Slack Community

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


This project is part of our comprehensive "SweetOps" approach towards DevOps.

Terraform Open Source Modules

It's 100% Open Source and licensed under the APACHE2.

We literally have hundreds of terraform modules that are Open Source and well-maintained. Check them out!

Usage

IMPORTANT: The master branch is used in source just as an example. In your code, do not pin to master because there may be breaking changes between releases. Instead pin to the release tag (e.g. ?ref=tags/x.y.z) of one of our latest releases.

Include this module in your existing terraform code:

module "alb" {
  source             = "git::https://github.com/cloudposse/terraform-aws-alb.git?ref=tags/0.2.0"
  namespace          = "eg"
  name               = "app"
  stage              = "dev"

  vpc_id             = "xxxxxxxxx"
  ip_address_type    = "ipv4"

  subnet_ids         = ["xxxxxxxx", "xxxxxxxx"]
  access_logs_region = "us-west-2"
}

Makefile Targets

Available targets:

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

Inputs

Name Description Type Default Required
access_logs_enabled A boolean flag to enable/disable access_logs string true no
access_logs_prefix The S3 bucket prefix string `` no
access_logs_region The region for the access_logs S3 bucket string us-east-1 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 string false no
attributes Additional attributes, e.g. 1 list <list> no
certificate_arn The ARN of the default SSL certificate for HTTPS listener string `` no
cross_zone_load_balancing_enabled A boolean flag to enable/disable cross zone load balancing string true no
deletion_protection_enabled A boolean flag to enable/disable deletion protection for ALB string false no
delimiter Delimiter to be used between namespace, name, stage and attributes string - no
deregistration_delay The amount of time to wait in seconds before changing the state of a deregistering target to unused string 15 no
health_check_healthy_threshold The number of consecutive health checks successes required before considering an unhealthy target healthy string 2 no
health_check_interval The duration in seconds in between health checks string 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_timeout The amount of time to wait in seconds before failing a health check request string 10 no
health_check_unhealthy_threshold The number of consecutive health check failures required before considering the target unhealthy string 2 no
http2_enabled A boolean flag to enable/disable HTTP/2 string true no
http_enabled A boolean flag to enable/disable HTTP listener string true no
http_ingress_cidr_blocks List of CIDR blocks to allow in HTTP security group list <list> no
http_ingress_prefix_list_ids List of prefix list IDs for allowing access to HTTP ingress security group list <list> no
http_port The port for the HTTP listener string 80 no
https_enabled A boolean flag to enable/disable HTTPS listener string false no
https_ingress_cidr_blocks List of CIDR blocks to allow in HTTPS security group list <list> no
https_ingress_prefix_list_ids List of prefix list IDs for allowing access to HTTPS ingress security group list <list> no
https_port The port for the HTTPS listener string 443 no
https_ssl_policy The name of the SSL Policy for the listener. string ELBSecurityPolicy-2015-05 no
idle_timeout The time in seconds that the connection is allowed to be idle string 60 no
internal A boolean flag to determine whether the ALB should be internal string 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
name Solution name, e.g. app string - yes
namespace Namespace, which could be your organization name, e.g. cp or cloudposse string - yes
security_group_ids A list of additional security group IDs to allow access to ALB list <list> no
stage Stage, e.g. prod, staging, dev, or test string - yes
subnet_ids A list of subnet IDs to associate with ALB list - yes
tags Additional tags (e.g. map(BusinessUnit,XYZ`) map <map> no
target_group_port The port for the default target group string 80 no
vpc_id VPC ID to associate with ALB string - 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 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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Contributing

Bug Reports & Feature Requests

Please use the issue tracker to report any bugs or file feature requests.

Developing

If you are interested in being a contributor and want to get involved in developing this project or help out with our other projects, we would love to hear from you! Shoot us an email.

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

  1. Fork the repo on GitHub
  2. Clone the project to your own machine
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  4. Push your work back up to your fork
  5. 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!

Copyright

Copyright © 2017-2019 Cloud Posse, LLC

License

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
"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.

About

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Cloud Posse

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Contributors

Erik Osterman
Erik Osterman
Igor Rodionov
Igor Rodionov
Andriy Knysh
Andriy Knysh
Sarkis Varozian
Sarkis Varozian

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Terraform module to provision a standard ALB for HTTP/HTTP traffic

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