remove terraform/aws; replace with readme (#9686)
* remove terraform/aws; replace with readme * terraform readme: prettify link
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Sam Salisbury
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# Looking for the terraform/aws module?
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This directory has been removed. Please instead refer to:
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- [hashicorp/terraform-aws-vault-starter](https://github.com/hashicorp/terraform-aws-vault-starter), or
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- [hashicorp/terraform-aws-vault](https://github.com/hashicorp/terraform-aws-vault)
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# Deploy Vault to AWS
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This folder contains a Terraform module for deploying Vault to AWS
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(within a VPC). It can be used as-is or can be modified to work in your
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scenario, but should serve as a strong starting point for deploying Vault.
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See `variables.tf` for a full reference to the parameters that this module
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takes and their descriptions.
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resource "template_file" "install" {
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template = "${file("${path.module}/scripts/install.sh.tpl")}"
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vars {
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download_url = "${var.download-url}"
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config = "${var.config}"
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extra-install = "${var.extra-install}"
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}
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}
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// We launch Vault into an ASG so that it can properly bring them up for us.
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resource "aws_autoscaling_group" "vault" {
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name = "vault - ${aws_launch_configuration.vault.name}"
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launch_configuration = "${aws_launch_configuration.vault.name}"
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availability_zones = ["${split(",", var.availability-zones)}"]
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min_size = "${var.nodes}"
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max_size = "${var.nodes}"
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desired_capacity = "${var.nodes}"
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health_check_grace_period = 15
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health_check_type = "EC2"
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vpc_zone_identifier = ["${split(",", var.subnets)}"]
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load_balancers = ["${aws_elb.vault.id}"]
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tag {
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key = "Name"
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value = "vault"
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propagate_at_launch = true
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}
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}
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resource "aws_launch_configuration" "vault" {
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image_id = "${var.ami}"
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instance_type = "${var.instance_type}"
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key_name = "${var.key-name}"
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security_groups = ["${aws_security_group.vault.id}"]
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user_data = "${template_file.install.rendered}"
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}
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// Security group for Vault allows SSH and HTTP access (via "tcp" in
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// case TLS is used)
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resource "aws_security_group" "vault" {
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name = "vault"
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description = "Vault servers"
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vpc_id = "${var.vpc-id}"
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}
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resource "aws_security_group_rule" "vault-ssh" {
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security_group_id = "${aws_security_group.vault.id}"
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type = "ingress"
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from_port = 22
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to_port = 22
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protocol = "tcp"
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cidr_blocks = ["0.0.0.0/0"]
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}
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// This rule allows Vault HTTP API access to individual nodes, since each will
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// need to be addressed individually for unsealing.
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resource "aws_security_group_rule" "vault-http-api" {
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security_group_id = "${aws_security_group.vault.id}"
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type = "ingress"
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from_port = 8200
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to_port = 8200
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protocol = "tcp"
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cidr_blocks = ["0.0.0.0/0"]
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}
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resource "aws_security_group_rule" "vault-egress" {
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security_group_id = "${aws_security_group.vault.id}"
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type = "egress"
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from_port = 0
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to_port = 0
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protocol = "-1"
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cidr_blocks = ["0.0.0.0/0"]
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}
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// Launch the ELB that is serving Vault. This has proper health checks
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// to only serve healthy, unsealed Vaults.
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resource "aws_elb" "vault" {
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name = "vault"
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connection_draining = true
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connection_draining_timeout = 400
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internal = true
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subnets = ["${split(",", var.subnets)}"]
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security_groups = ["${aws_security_group.elb.id}"]
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listener {
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instance_port = 8200
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instance_protocol = "tcp"
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lb_port = 80
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lb_protocol = "tcp"
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}
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listener {
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instance_port = 8200
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instance_protocol = "tcp"
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lb_port = 443
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lb_protocol = "tcp"
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}
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health_check {
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healthy_threshold = 2
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unhealthy_threshold = 3
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timeout = 5
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target = "${var.elb-health-check}"
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interval = 15
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}
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}
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resource "aws_security_group" "elb" {
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name = "vault-elb"
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description = "Vault ELB"
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vpc_id = "${var.vpc-id}"
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}
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resource "aws_security_group_rule" "vault-elb-http" {
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security_group_id = "${aws_security_group.elb.id}"
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type = "ingress"
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from_port = 80
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to_port = 80
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protocol = "tcp"
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cidr_blocks = ["0.0.0.0/0"]
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}
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resource "aws_security_group_rule" "vault-elb-https" {
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security_group_id = "${aws_security_group.elb.id}"
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type = "ingress"
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from_port = 443
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to_port = 443
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protocol = "tcp"
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cidr_blocks = ["0.0.0.0/0"]
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}
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resource "aws_security_group_rule" "vault-elb-egress" {
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security_group_id = "${aws_security_group.elb.id}"
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type = "egress"
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from_port = 0
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to_port = 0
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protocol = "-1"
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cidr_blocks = ["0.0.0.0/0"]
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}
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output "address" {
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value = "${aws_elb.vault.dns_name}"
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}
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// Can be used to add additional SG rules to Vault instances.
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output "vault_security_group" {
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value = "${aws_security_group.vault.id}"
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}
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// Can be used to add additional SG rules to the Vault ELB.
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output "elb_security_group" {
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value = "${aws_security_group.elb.id}"
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}
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#!/usr/bin/env bash
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set -e
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# Install packages
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sudo apt-get update -y
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sudo apt-get install -y curl unzip
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# Download Vault into some temporary directory
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curl -L "${download_url}" > /tmp/vault.zip
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# Unzip it
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cd /tmp
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sudo unzip vault.zip
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sudo mv vault /usr/local/bin
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sudo chmod 0755 /usr/local/bin/vault
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sudo chown root:root /usr/local/bin/vault
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# Setup the configuration
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cat <<EOF >/tmp/vault-config
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${config}
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EOF
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sudo mv /tmp/vault-config /usr/local/etc/vault-config.json
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# Setup the init script
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cat <<EOF >/tmp/upstart
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description "Vault server"
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start on runlevel [2345]
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stop on runlevel [!2345]
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respawn
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script
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if [ -f "/etc/service/vault" ]; then
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. /etc/service/vault
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fi
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# Make sure to use all our CPUs, because Vault can block a scheduler thread
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export GOMAXPROCS=`nproc`
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exec /usr/local/bin/vault server \
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-config="/usr/local/etc/vault-config.json" \
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\$${VAULT_FLAGS} \
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>>/var/log/vault.log 2>&1
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end script
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EOF
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sudo mv /tmp/upstart /etc/init/vault.conf
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# Extra install steps (if any)
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${extra-install}
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# Start Vault
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sudo start vault
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//-------------------------------------------------------------------
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// Vault settings
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//-------------------------------------------------------------------
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variable "download-url" {
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default = "https://releases.hashicorp.com/vault/1.3.4/vault_1.3.4_linux_amd64.zip"
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description = "URL to download Vault"
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}
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variable "config" {
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description = "Configuration (text) for Vault"
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}
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variable "extra-install" {
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default = ""
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description = "Extra commands to run in the install script"
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}
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//-------------------------------------------------------------------
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// AWS settings
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//-------------------------------------------------------------------
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variable "ami" {
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default = "ami-7eb2a716"
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description = "AMI for Vault instances"
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}
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variable "availability-zones" {
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default = "us-east-1a,us-east-1b"
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description = "Availability zones for launching the Vault instances"
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}
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variable "elb-health-check" {
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default = "HTTP:8200/v1/sys/health"
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description = "Health check for Vault servers"
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}
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variable "instance_type" {
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default = "m3.medium"
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description = "Instance type for Vault instances"
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}
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variable "key-name" {
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default = "default"
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description = "SSH key name for Vault instances"
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}
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variable "nodes" {
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default = "2"
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description = "number of Vault instances"
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}
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variable "subnets" {
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description = "list of subnets to launch Vault within"
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}
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variable "vpc-id" {
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description = "VPC ID"
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}
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