terraform-aws-client-vpn

The terraform-aws-client-vpn module creates an AWS Client VPN Endpoint. It contains scripts to generate the required certificates and OpenVPN config file.

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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.

Here's how to invoke this example module in your projects

module vpn {
  source = "https://github.com/DeployMode/terraform-aws-client-vpn.git?ref=master"

  context = module.this.context

  vpn_client_cidr               = var.vpn_client_cidr
  cert_dir                      = var.cert_dir
  config_dir                    = var.config_dir
  cert_domain                   = var.cert_domain
  subnet_ids                    = [aws_subnet.vpn.id]
  security_groups               = var.security_groups
  logging_enabled               = var.logging_enabled
  cloudwatch_log_retention_days = var.cloudwatch_log_retention_days
}

Examples

Here is an example of using this module:

• examples/complete - complete example of using this module
  • Note: you must create subnets before creating the rest of the resources. This can be done with:

    terraform apply -var-file=fixtures.us-east-2.tfvars -target=aws_subnet.vpn
    terraform apply -var-file=fixtures.us-east-2.tfvars

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	>= 0.12.0
local	~> 1.2
random	~> 2.2

Providers

Name	Version
aws	n/a
null	n/a

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional tags for appending to tags_as_list_of_maps. Not added to tags.	map(string)	{}	no
allowed_ingress_network_cidr	CIDR to which VPC clients are allowed access	string	"0.0.0.0/0"	no
attributes	Additional attributes (e.g. 1)	list(string)	[]	no
cert_dir	Local storage location for generated certs. Relative to module root.	string	"certs"	no
cert_domain	Domain suffix for certificates	string	n/a	yes
cloudwatch_log_retention_days	Retention in days for CloudWatch Log Group	number	30	no
config_dir	Local storage location for downloaded VPN config. Relative to module root.	string	"config"	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.	object({ enabled = bool namespace = string environment = string stage = string name = string delimiter = string attributes = list(string) tags = map(string) additional_tag_map = map(string) regex_replace_chars = string label_order = list(string) id_length_limit = number })	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "enabled": true, "environment": null, "id_length_limit": null, "label_order": [], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {} }	no
delimiter	Delimiter to be used between namespace, environment, stage, name and attributes. Defaults to - (hyphen). Set to "" to use no delimiter at all.	string	null	no
enabled	Set to false to prevent the module from creating any resources	bool	null	no
environment	Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT'	string	null	no
id_length_limit	Limit id to this many characters. Set to 0 for unlimited length. Set to null for default, which is 0. Does not affect id_full.	number	null	no
label_order	The naming order of the id output and Name tag. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 5 elements, but at least one must be present.	list(string)	null	no
logging_enabled	Enable CloudWatch logging	bool	false	no
name	Solution name, e.g. 'app' or 'jenkins'	string	null	no
namespace	Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp'	string	null	no
regex_replace_chars	Regex to replace chars with empty string in namespace, environment, stage and name. If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.	string	null	no
stage	Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release'	string	null	no
subnet_ids	Subnet ID to associate clients	list(string)	n/a	yes
tags	Additional tags (e.g. map('BusinessUnit','XYZ')	map(string)	{}	no
vpn_client_cidr	Network CIDR for allocating IPs to VPN clients	string	n/a	yes

Outputs

Name	Description
arn	The ARN of the Client VPN endpoint.
dns_name	The DNS name to be used by clients when establishing their VPN session.
id	The ID of the Client VPN endpoint.
status	The current state of the Client VPN endpoint.
vpn_config_path	Path to downloaded VPN config file

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Related Projects

Check out these related projects.

• terraform-null-label - Terraform module designed to generate consistent names and tags for resources. Use terraform-null-label to implement a strict naming convention.

References

For additional context, refer to some of these links.

• Terraform Standard Module Structure - HashiCorp's standard module structure is a file and directory layout we recommend for reusable modules distributed in separate repositories.
• Terraform Module Requirements - HashiCorp's guidance on all the requirements for publishing a module. Meeting the requirements for publishing a module is extremely easy.
• Terraform random_integer Resource - The resource random_integer generates random values from a given range, described by the min and max attributes of a given resource.
• Terraform Version Pinning - The required_version setting can be used to constrain which versions of the Terraform CLI can be used with your configuration

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Copyrights

Copyright © 2020-2020 DeployMode Pty Ltd

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

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Contributors

Joe Niland