├── .gitignore ├── CHANGELOG.md ├── LICENSE.md ├── README.md ├── example ├── eu-central-1 │ ├── terragrunt.hcl │ └── values.yaml ├── terragrunt.hcl └── us-east-1 │ ├── terragrunt.hcl │ └── values.yaml ├── iam.tf ├── main.tf ├── sg.tf ├── templates ├── client-data.tpl └── user-data.txt ├── variables.tf └── versions.tf /.gitignore: -------------------------------------------------------------------------------- 1 | # terraform 2 | .terraform 3 | terraform.tfstate 4 | terraform.tfstate.backup 5 | terraform.tfstate.*.backup 6 | 7 | # IDEs 8 | .idea/ 9 | .vscode/ 10 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | All notable changes to this project will be documented in this file. 3 | 4 | ## [1.2.0] - 2021-03-12 5 | 6 | ### Added 7 | - docker-ce 8 | - docker-compose 9 | - prometheus-wireguard-exporter 10 | - friendly_name support 11 | 12 | ## [1.1.0] - 2021-03-11 13 | 14 | ### Added 15 | - Update examples 16 | - Update Readme 17 | - Fix tf code 18 | - Refactor tf variables 19 | - Fix iptables rules 20 | - Upgrade Ubuntu 16.04 > 20.04 21 | - Upgrade aws cli v1 > v2 22 | - Install additional packages on the server for debugging & maintenance 23 | - Support for TF v0.13 24 | 25 | ## [1.0.0] - 2019-10-13 26 | Note that this release contains breaking changes. Hence the major version bump. 27 | 28 | ### Added 29 | - Support for TF v0.12 30 | - Support for Network Load Balancers 31 | - Variable `instance_type` added. 32 | - Variable `additional_security_group_ids` added to support more flexibility with security groups. 33 | - Variable `eip_id` added to pass in an EIP object 34 | - `asg_min_size`, `asg_max_size`, and `asg_desired_capacity` variables for autoscaling groups. 35 | - Variable `wg_persistent_keepalive` to set keepalive in seconds. Set to 0 to disable. 36 | 37 | ### Changed 38 | - Variable `public_subnet_ids` renamed to `subnet_ids` 39 | - Ubuntu AMI used will now default to the latest. 40 | 41 | ### Removed 42 | - An EIP is no longer created in this module, in order to support the option to use a ELB. Instead, a EIP ID must be passed in, if that is the desired configuration. 43 | 44 | ## [0.0.2] - 2019-03-02 45 | ### Added 46 | - Multi-client support via the module variable. 47 | - This CHANGELOG 48 | ### Removed 49 | - Single-client public key via AWS SSM as it now conflicts with the module variable method. 50 | 51 | ## [0.0.1] - 2019-02-24 52 | ### Added 53 | - Working module to deploy WireGuard with single client support. 54 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # terraform-aws-wireguard 2 | 3 | A Terraform module to deploy a WireGuard VPN server on AWS. It can also be used to run one or more servers behind a loadbalancer, for redundancy. 4 | 5 | The module is "Terragrunt ready" & supports multi region deployment & values in yaml format. Please see example here: [example/](example/) 6 | 7 | ## Prerequisites 8 | Before using this module, you'll need to generate a key pair for your server and client, which cloud-init will source and add to WireGuard's configuration. 9 | 10 | - Install the WireGuard tools for your OS: https://www.wireguard.com/install/ 11 | - Generate a key pair for each client 12 | - `wg genkey | tee client1-privatekey | wg pubkey > client1-publickey` 13 | - Generate a key pair for the server 14 | - `wg genkey | tee server-privatekey | wg pubkey > server-publickey` 15 | - Add each client's public key, along with the next available IP address to the wg_clients list. See Usage for details. 16 | 17 | ## Variables 18 | | Variable Name | Type | Required |Description | 19 | |---------------|-------------|-------------|-------------| 20 | |`subnet_ids`|`list`|Yes|A list of subnets for the Autoscaling Group to use for launching instances. May be a single subnet, but it must be an element in a list.| 21 | |`ssh_key_id`|`string`|Yes|A SSH public key ID to add to the VPN instance.| 22 | |`vpc_id`|`string`|Yes|The VPC ID in which Terraform will launch the resources.| 23 | |`env`|`string`|Optional - defaults to `prod`|The name of environment for WireGuard. Used to differentiate multiple deployments.| 24 | |`use_eip`|`bool`|Optional|Whether to attach an [Elastic IP](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/elastic-ip-addresses-eip.html) address to the VPN server. Useful for avoiding changing IPs.| 25 | |`eip_id`|`string`|Optional|When `use_eip` is enabled, specify the ID of the Elastic IP to which the VPN server will attach.| 26 | |`use_ssm`|`bool`|Optional|Use SSM Parameter Store for the VPN server Private Key.| 27 | |`wg_server_private_key`|`string`|Yes - defaults to static value in `/etc/wireguard/wg0.conf`| Static value or The Parameter Store key to use for the VPN server Private Key.| 28 | |`target_group_arns`|`string`|Optional|The Loadbalancer Target Group to which the vpn server ASG will attach.| 29 | |`additional_security_group_ids`|`list`|Optional|Used to allow added access to reach the WG servers or allow loadbalancer health checks.| 30 | |`asg_min_size`|`integer`|Optional - default to `1`|Number of VPN servers to permit minimum, only makes sense in loadbalanced scenario.| 31 | |`asg_desired_capacity`|`integer`|Optional - default to `1`|Number of VPN servers to maintain, only makes sense in loadbalanced scenario.| 32 | |`asg_max_size`|`integer`|Optional - default to `1`|Number of VPN servers to permit maximum, only makes sense in loadbalanced scenario.| 33 | |`instance_type`|`string`|Optional - defaults to `t2.micro`|Instance Size of VPN server.| 34 | |`wg_server_net`|`cidr address and netmask`|Yes|The server ip allocation and net - wg_clients entries MUST be in this netmask range.| 35 | |`wg_clients`|`list`|Yes|List of client objects with IP and public key. See Usage for details. See Examples for formatting.| 36 | |`wg_server_port`|`integer`|Optional - defaults to `51820`|Port to run wireguard service on, wireguard standard is 51820.| 37 | |`wg_persistent_keepalive`|`integer`|Optional - defaults to `25`|Regularity of Keepalives, useful for NAT stability.| 38 | |`ami_id`|`string`|Optional - defaults to the newest Ubuntu 20.04 AMI|AMI to use for the VPN server.| 39 | |`wg_server_interface`|`string`|Optional - defaults to eth0|Server interface to route traffic to for installations forwarding traffic to private networks.| 40 | |`use_route53`|`bool`|Optional|Create Route53 record for Wireguard server.| 41 | |`route53_hosted_zone_id`|`string`|Optional - if use_route53 is not used.|Route53 Hosted zone ID for Wireguard server Route53 record.| 42 | |`route53_record_name`|`string`|Optional - if use_route53 is not used.|Route53 Record Name for Wireguard server.| 43 | 44 | If the `wg_server_private_key` contains certain characters like slashes & etc then it needs additional pre-processing before entering it into `values.yaml`. Example: 45 | ``` 46 | export ESCAPED_WG_SERVER_PRIVATE_KEY=$(printf '%s\n' "$WG_SERVER_PRIVATE_KEY" | sed -e 's/[\/&]/\\&/g') 47 | sed -i "s/WG_SERVER_PRIVATE_KEY/$ESCAPED_WG_SERVER_PRIVATE_KEY/g" values.yaml 48 | ``` 49 | -------------------------------------------------------------------------------- /example/eu-central-1/terragrunt.hcl: -------------------------------------------------------------------------------- 1 | include { 2 | path = find_in_parent_folders() 3 | } 4 | 5 | terraform { 6 | source = "github.com/vainkop/terraform-aws-wireguard?ref=v1.3.0" 7 | } 8 | 9 | locals { common_vars = yamldecode(file("values.yaml")) } 10 | 11 | inputs = local.common_vars 12 | -------------------------------------------------------------------------------- /example/eu-central-1/values.yaml: -------------------------------------------------------------------------------- 1 | region: eu-central-1 2 | ssh_key_id: YOUR_SSH_KEY_HERE 3 | instance_type: t2.medium 4 | vpc_id: YOUR_VPC_ID_HERE 5 | subnet_ids: 6 | - YOUR_SUBNET_ID_HERE 7 | use_eip: true 8 | use_ssm: true 9 | use_route53: true 10 | route53_hosted_zone_id: Z06401293ABC321ODE001 11 | route53_record_name: vpn.example.com 12 | route53_geo: 13 | policy: 14 | - continent: EU 15 | prometheus_server_ip: 0.0.0.0/0 16 | wg_server_net: 10.8.0.1/24 17 | wg_server_private_key: YOUR_SERVER_PRIVATE_KEY_HERE 18 | wg_clients: 19 | - friendly_name: machine-1 20 | public_key: MACHINE_1_PUBLIC_KEY_HERE 21 | client_ip: 10.8.0.2/32 22 | - friendly_name: machine-1 23 | public_key: MACHINE_1_PUBLIC_KEY_HERE 24 | client_ip: 10.8.0.3/32 25 | -------------------------------------------------------------------------------- /example/terragrunt.hcl: -------------------------------------------------------------------------------- 1 | terragrunt_version_constraint = "= v0.28.9" 2 | terraform_version_constraint = "= 0.13.6" 3 | 4 | remote_state { 5 | backend = "s3" 6 | 7 | config = { 8 | encrypt = true 9 | bucket = "YOUR_TERRAFORM_STATE_BUCKET_NAME" 10 | region = "YOUR_TERRAFORM_STATE_BUKET_REGION" 11 | key = "${path_relative_to_include()}/terraform.tfstate" 12 | acl = "bucket-owner-full-control" 13 | dynamodb_table = "YOUR_DYNAMODB_TABLE" 14 | } 15 | } 16 | -------------------------------------------------------------------------------- /example/us-east-1/terragrunt.hcl: -------------------------------------------------------------------------------- 1 | include { 2 | path = find_in_parent_folders() 3 | } 4 | 5 | terraform { 6 | source = "github.com/vainkop/terraform-aws-wireguard?ref=v1.3.0" 7 | } 8 | 9 | locals { common_vars = yamldecode(file("values.yaml")) } 10 | 11 | inputs = local.common_vars 12 | -------------------------------------------------------------------------------- /example/us-east-1/values.yaml: -------------------------------------------------------------------------------- 1 | region: us-east-1 2 | ssh_key_id: YOUR_SSH_KEY_HERE 3 | instance_type: t2.medium 4 | vpc_id: YOUR_VPC_ID_HERE 5 | subnet_ids: 6 | - YOUR_SUBNET_ID_HERE 7 | use_eip: true 8 | use_ssm: true 9 | use_route53: true 10 | route53_hosted_zone_id: Z06401293ABC321ODE001 11 | route53_record_name: vpn.example.com 12 | route53_geo: 13 | policy: 14 | - continent: NA 15 | prometheus_server_ip: 0.0.0.0/0 16 | wg_server_net: 10.8.0.1/24 17 | wg_server_private_key: YOUR_SERVER_PRIVATE_KEY_HERE 18 | wg_clients: 19 | - friendly_name: machine-1 20 | public_key: MACHINE_1_PUBLIC_KEY_HERE 21 | client_ip: 10.8.0.2/32 22 | - friendly_name: machine-1 23 | public_key: MACHINE_1_PUBLIC_KEY_HERE 24 | client_ip: 10.8.0.3/32 25 | -------------------------------------------------------------------------------- /iam.tf: -------------------------------------------------------------------------------- 1 | data "aws_iam_policy_document" "ec2_assume_role" { 2 | statement { 3 | actions = [ 4 | "sts:AssumeRole" 5 | ] 6 | 7 | principals { 8 | type = "Service" 9 | identifiers = ["ec2.amazonaws.com"] 10 | } 11 | } 12 | } 13 | 14 | data "aws_iam_policy_document" "wireguard_policy_doc" { 15 | statement { 16 | actions = [ 17 | "ec2:AssociateAddress", 18 | "ssm:GetParameter" 19 | ] 20 | 21 | resources = ["*"] 22 | } 23 | } 24 | 25 | data "aws_caller_identity" "current" {} 26 | 27 | resource "aws_iam_policy" "wireguard_policy" { 28 | name = "tf-wireguard-${var.env}-${var.region}" 29 | description = "Terraform Managed. Allows Wireguard instance to attach EIP." 30 | policy = data.aws_iam_policy_document.wireguard_policy_doc.json 31 | count = (var.use_eip ? 1 : 0) # only used for EIP mode 32 | } 33 | 34 | resource "aws_iam_role" "wireguard_role" { 35 | name = "tf-wireguard-${var.env}-${var.region}" 36 | description = "Terraform Managed. Role to allow Wireguard instance to attach EIP." 37 | path = "/" 38 | assume_role_policy = data.aws_iam_policy_document.ec2_assume_role.json 39 | count = (var.use_eip ? 1 : 0) # only used for EIP mode 40 | } 41 | 42 | resource "aws_iam_role_policy_attachment" "wireguard_roleattach" { 43 | role = aws_iam_role.wireguard_role[0].name 44 | policy_arn = aws_iam_policy.wireguard_policy[0].arn 45 | count = (var.use_eip ? 1 : 0) # only used for EIP mode 46 | } 47 | 48 | resource "aws_iam_instance_profile" "wireguard_profile" { 49 | name = "tf-wireguard-${var.env}-${var.region}" 50 | role = aws_iam_role.wireguard_role[0].name 51 | count = (var.use_eip ? 1 : 0) # only used for EIP mode 52 | } -------------------------------------------------------------------------------- /main.tf: -------------------------------------------------------------------------------- 1 | resource "aws_eip" "wireguard" { 2 | vpc = true 3 | tags = { 4 | Name = "wireguard" 5 | } 6 | } 7 | 8 | resource "aws_route53_record" "wireguard" { 9 | count = var.use_route53 ? 1 : 0 10 | allow_overwrite = true 11 | set_identifier = "wireguard-${var.region}" 12 | zone_id = var.route53_hosted_zone_id 13 | name = var.route53_record_name 14 | type = "A" 15 | ttl = "60" 16 | records = [aws_eip.wireguard.public_ip] 17 | 18 | dynamic "geolocation_routing_policy" { 19 | for_each = try(length(var.route53_geo.policy) > 0 ? var.route53_geo.policy : tomap(false), {}) 20 | 21 | content { 22 | continent = geolocation_routing_policy.value.continent 23 | } 24 | } 25 | } 26 | 27 | data "template_file" "wg_client_data_json" { 28 | template = file("${path.module}/templates/client-data.tpl") 29 | count = length(var.wg_clients) 30 | 31 | vars = { 32 | friendly_name = var.wg_clients[count.index].friendly_name 33 | client_pub_key = var.wg_clients[count.index].public_key 34 | client_ip = var.wg_clients[count.index].client_ip 35 | persistent_keepalive = var.wg_persistent_keepalive 36 | } 37 | } 38 | 39 | data "aws_ami" "ubuntu" { 40 | most_recent = true 41 | filter { 42 | name = "name" 43 | values = ["ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-*"] 44 | } 45 | filter { 46 | name = "virtualization-type" 47 | values = ["hvm"] 48 | } 49 | owners = ["099720109477"] # Canonical 50 | } 51 | 52 | resource "aws_launch_configuration" "wireguard_launch_config" { 53 | name_prefix = "wireguard-${var.env}-${var.region}-" 54 | image_id = var.ami_id == null ? data.aws_ami.ubuntu.id : var.ami_id 55 | instance_type = var.instance_type 56 | key_name = var.ssh_key_id 57 | iam_instance_profile = (var.use_eip ? aws_iam_instance_profile.wireguard_profile[0].name : null) 58 | user_data = templatefile("${path.module}/templates/user-data.txt", { 59 | wg_server_private_key = var.use_ssm ? "AWS_SSM_PARAMETER" : var.wg_server_private_key, 60 | wg_server_private_key_aws_ssm_name = var.use_ssm ? aws_ssm_parameter.wireguard_server_private_key[0].name : null, 61 | wg_server_net = var.wg_server_net, 62 | wg_server_port = var.wg_server_port, 63 | peers = join("\n", data.template_file.wg_client_data_json.*.rendered), 64 | use_eip = var.use_eip ? "enabled" : "disabled", 65 | eip_id = aws_eip.wireguard.id, 66 | use_ssm = var.use_ssm ? "true" : "false", 67 | wg_server_interface = var.wg_server_interface 68 | }) 69 | security_groups = [aws_security_group.sg_wireguard.id] 70 | associate_public_ip_address = var.use_eip 71 | 72 | lifecycle { 73 | create_before_destroy = true 74 | } 75 | } 76 | 77 | resource "aws_autoscaling_group" "wireguard_asg" { 78 | name = aws_launch_configuration.wireguard_launch_config.name 79 | launch_configuration = aws_launch_configuration.wireguard_launch_config.name 80 | min_size = var.asg_min_size 81 | desired_capacity = var.asg_desired_capacity 82 | max_size = var.asg_max_size 83 | vpc_zone_identifier = var.subnet_ids 84 | health_check_type = "EC2" 85 | termination_policies = ["OldestLaunchConfiguration", "OldestInstance"] 86 | target_group_arns = var.target_group_arns 87 | 88 | lifecycle { 89 | create_before_destroy = true 90 | } 91 | 92 | tags = [ 93 | { 94 | key = "Name" 95 | value = aws_launch_configuration.wireguard_launch_config.name 96 | propagate_at_launch = true 97 | }, 98 | { 99 | key = "Project" 100 | value = "wireguard" 101 | propagate_at_launch = true 102 | }, 103 | { 104 | key = "env" 105 | value = var.env 106 | propagate_at_launch = true 107 | }, 108 | { 109 | key = "tf-managed" 110 | value = "True" 111 | propagate_at_launch = true 112 | }, 113 | ] 114 | } 115 | 116 | resource "aws_ssm_parameter" "wireguard_server_private_key" { 117 | count = var.use_ssm ? 1 : 0 118 | name = "/wireguard/wg-server-private-key" 119 | description = "WireGuard Server private key" 120 | type = "SecureString" 121 | value = var.wg_server_private_key 122 | 123 | tags = { 124 | Name = "wireguard-${var.env}-${var.region}" 125 | } 126 | } 127 | -------------------------------------------------------------------------------- /sg.tf: -------------------------------------------------------------------------------- 1 | resource "aws_security_group" "sg_wireguard" { 2 | name = "wireguard-${var.env}-${var.region}" 3 | description = "Terraform Managed. Allow Wireguard client traffic from internet." 4 | vpc_id = var.vpc_id 5 | 6 | tags = { 7 | Name = "wireguard-${var.env}-${var.region}" 8 | Project = "wireguard" 9 | tf-managed = "True" 10 | env = var.env 11 | } 12 | 13 | ingress { 14 | from_port = var.wg_server_port 15 | to_port = var.wg_server_port 16 | protocol = "udp" 17 | cidr_blocks = ["0.0.0.0/0"] 18 | } 19 | 20 | ingress { 21 | from_port = 22 22 | to_port = 22 23 | protocol = "tcp" 24 | cidr_blocks = ["0.0.0.0/0"] 25 | } 26 | 27 | ingress { 28 | from_port = 9586 29 | to_port = 9586 30 | protocol = "tcp" 31 | cidr_blocks = [var.prometheus_server_ip] 32 | } 33 | 34 | ingress { 35 | from_port = 9100 36 | to_port = 9100 37 | protocol = "tcp" 38 | cidr_blocks = [var.prometheus_server_ip] 39 | } 40 | 41 | egress { 42 | from_port = 0 43 | to_port = 0 44 | protocol = "-1" 45 | cidr_blocks = ["0.0.0.0/0"] 46 | } 47 | } -------------------------------------------------------------------------------- /templates/client-data.tpl: -------------------------------------------------------------------------------- 1 | [Peer] 2 | # friendly_name = ${friendly_name} 3 | PublicKey = ${client_pub_key} 4 | AllowedIPs = ${client_ip} 5 | PersistentKeepalive = ${persistent_keepalive} -------------------------------------------------------------------------------- /templates/user-data.txt: -------------------------------------------------------------------------------- 1 | #!/bin/bash -v 2 | apt-get update 3 | DEBIAN_FRONTEND=noninteractive apt-get upgrade -y -o Dpkg::Options::="--force-confnew" 4 | apt-get install -y \ 5 | apt-transport-https \ 6 | ca-certificates \ 7 | build-essential \ 8 | software-properties-common \ 9 | unzip \ 10 | curl \ 11 | wget \ 12 | gnupg \ 13 | net-tools \ 14 | jq \ 15 | wireguard-dkms \ 16 | wireguard-tools && \ 17 | rm -rf /var/lib/apt/lists/* 18 | 19 | curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip" && \ 20 | unzip awscliv2.zip && \ 21 | rm -f awscliv2.zip && \ 22 | ./aws/install 23 | 24 | cat > /etc/wireguard/wg0.conf <<- EOF 25 | [Interface] 26 | Address = ${wg_server_net} 27 | PrivateKey = ${wg_server_private_key} 28 | ListenPort = ${wg_server_port} 29 | PostUp = sysctl -w -q net.ipv4.ip_forward=1 30 | PostUp = sysctl -w -q net.ipv6.conf.all.forwarding=1 31 | PostUp = iptables -P FORWARD DROP 32 | PostUp = ip6tables -P FORWARD DROP 33 | PostUp = iptables -A FORWARD -i wg0 -j ACCEPT 34 | PostUp = ip6tables -A FORWARD -i wg0 -j ACCEPT 35 | PostUp = iptables -t nat -A POSTROUTING -o ENI -j MASQUERADE 36 | PostUp = ip6tables -t nat -A POSTROUTING -o ENI -j MASQUERADE 37 | PostDown = sysctl -w -q net.ipv4.ip_forward=0 38 | PostDown = sysctl -w -q net.ipv6.conf.all.forwarding=0 39 | PostDown = iptables -P FORWARD ACCEPT 40 | PostDown = ip6tables -P FORWARD ACCEPT 41 | PostDown = iptables -D FORWARD -i wg0 -j ACCEPT 42 | PostDown = ip6tables -D FORWARD -i wg0 -j ACCEPT 43 | PostDown = iptables -t nat -D POSTROUTING -o ENI -j MASQUERADE 44 | PostDown = ip6tables -t nat -D POSTROUTING -o ENI -j MASQUERADE 45 | 46 | ${peers} 47 | EOF 48 | 49 | export ENI=$(ip route get 8.8.8.8 | grep 8.8.8.8 | awk '{print $5}') 50 | sed -i "s/ENI/$ENI/g" /etc/wireguard/wg0.conf 51 | 52 | # Use EIP if it is provided 53 | if [ "${use_eip}" != "disabled" ]; then 54 | export INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id) 55 | export REGION=$(curl -fsq http://169.254.169.254/latest/meta-data/placement/availability-zone | sed 's/[a-z]$//') 56 | aws --region $${REGION} ec2 associate-address --allocation-id ${eip_id} --instance-id $${INSTANCE_ID} 57 | fi 58 | 59 | # Use SSM if it is provided 60 | if [[ "${use_ssm}" == "true" ]] && [[ ! -z "${wg_server_private_key_aws_ssm_name}" ]]; then 61 | export REGION=$(curl -fsq http://169.254.169.254/latest/meta-data/placement/availability-zone | sed 's/[a-z]$//') 62 | export AWS_SSM_PARAMETER=$(aws ssm get-parameter --name "${wg_server_private_key_aws_ssm_name}" --with-decryption --region $${REGION} | jq -r .Parameter.Value) 63 | sed -i "s/AWS_SSM_PARAMETER/$AWS_SSM_PARAMETER/g" /etc/wireguard/wg0.conf 64 | fi 65 | 66 | chown -R root:root /etc/wireguard/ 67 | chmod -R og-rwx /etc/wireguard/* 68 | sysctl -p 69 | systemctl enable wg-quick@wg0.service 70 | systemctl start wg-quick@wg0.service 71 | 72 | until systemctl is-active --quiet wg-quick@wg0.service 73 | do 74 | sleep 1 75 | done 76 | 77 | # Install prometheus_wireguard_exporter 78 | wget https://github.com/vainkop/terraform-aws-wireguard/releases/download/v1.3.0/prometheus_wireguard_exporter_v3.4.2.tar.gz && \ 79 | tar -zxvf prometheus_wireguard_exporter_v3.4.2.tar.gz prometheus_wireguard_exporter && \ 80 | rm -fv prometheus_wireguard_exporter_v3.4.2.tar.gz && \ 81 | mv prometheus_wireguard_exporter /usr/local/bin/prometheus_wireguard_exporter && \ 82 | chmod +x /usr/local/bin/prometheus_wireguard_exporter 83 | 84 | cat <