具有地形的 Route 53 故障转移策略

Question

我尝试使用 terraform 为 AWS 上的域创建故障转移策略，问题是它只在 route53 资源后面附加一个 elb dns 名称作为主要和辅助。我实际上希望它使用北弗吉尼亚易北河名称作为主要名称，俄勒冈州作为次要名称。

这是一个多区域架构，我已经使用相同的源目录创建了模块。

文件名： route53.tf

resource "aws_route53_record" "www1" {
zone_id = "Zone-ID"
name    = "www1"
type    = "A"
#ttl     = "5"
failover_routing_policy {
type = "PRIMARY"
}
set_identifier = "www1"
#records        = ["${aws_elb.web.dns_name}"]
alias {
name                   = "${aws_elb.web.dns_name}"
zone_id                = "${aws_elb.web.zone_id}"
evaluate_target_health = true
}
}
resource "aws_route53_record" "www2" {
zone_id = "Zone-ID"
name    = "www2"
type    = "A"
#ttl     = "5"
failover_routing_policy {
type = "SECONDARY"
}
set_identifier = "www2"
#records        = ["${aws_elb.web.dns_name}"]
alias {
name                   = "${aws_elb.web.dns_name}"
zone_id                = "${aws_elb.web.zone_id}"
evaluate_target_health = true
}
}

文件名： alb_elb.tf

resource "aws_elb" "web" {
name               = "web-elb"
availability_zones = "${var.az}"
listener {
instance_port     = 8000
instance_protocol = "http"
lb_port           = 80
lb_protocol       = "http"
}
health_check {
healthy_threshold   = 2
unhealthy_threshold = 2
timeout             = 3
target              = "HTTP:8000/"
interval            = 30
}
instances                   = ["${aws_instance.web.*.id}"]
cross_zone_load_balancing   = true
idle_timeout                = 400
connection_draining         = true
connection_draining_timeout = 400
tags {
Name = "foobar-terraform-elb"
}
}

文件名：main.tf。

module "north-virginia" {
source = "./modules/production"
region = "us-east-1"
az = ["us-east-1a", "us-east-1b", "us-east-1c"]
}
module "oregon" {
source = "./modules/production"
region = "us-west-2"
az = ["us-west-2a", "us-west-2b", "us-west-2c"]
}

文件名： ./production/module/main.tf

variable region { }
variable az { 
type = "list" 
}
provider "aws" {
region = "${var.region}"
profile = "personal"
shared_credentials_file = "~/.aws/credentials"
}
data "aws_caller_identity" "current" {}
output "account_id" {
value = "${data.aws_caller_identity.current.account_id}"
}

目录树：

.
├── main.tf
└── modules
├── dev
│   ├── ec2.tf
│   ├── main.tf
│   └── route53.tf
├── production
│   ├── aws_elb.tf
│   ├── aws_instance.tf
│   ├── main.tf
│   └── route53.tf
└── qa
├── ec2.tf
├── main.tf
└── route53.tf

Answer 1

在生产/alb_elb.tf 中添加以下内容：

output "dns_name" {
value = "${aws_elb.web.dns_name}"
}

这将输出 DNS 名称。
在您的 main.tf 为 route53 创建一个单独的模块。
该模块应如下所示：

module "route53" {
source = "./modules/route53"
name1 = "${module.north-virginia.dns_name}"
name2 = "${module.oregon.dns_name}"
}

您的 route53.tf 应如下所示：

variable "name1" ()
varibale "name2" ()
resource "aws_route53_record" "www1" {
zone_id = "Zone-ID"
name    = "www1"
type    = "A"
#ttl     = "5"
failover_routing_policy {
type = "PRIMARY"
}
set_identifier = "www1"
#records        = ["${aws_elb.web.dns_name}"]
alias {
name                   = "${var.name1}"
zone_id                = "${aws_elb.web.zone_id}"
evaluate_target_health = true
}
}
resource "aws_route53_record" "www2" {
zone_id = "Zone-ID"
name    = "www2"
type    = "A"
#ttl     = "5"
failover_routing_policy {
type = "SECONDARY"
}
set_identifier = "www2"
#records        = ["${aws_elb.web.dns_name}"]
alias {
name                   = "${var.name2}"
zone_id                = "${aws_elb.web.zone_id}"
evaluate_target_health = true
}
}