terraform - Terraform - AWS 多个子网问题
问题描述
我正在尝试部署多个 ec2 实例,其中每个 Web Server ec2 实例位于不同的子网中,而 Application Server 实例位于特定的子网中。
当使用计数参数时,每个网络服务器都被正确部署在不同的子网中,但应用程序实例被部署在同一个子网中,而不是我在下面给出的“应用程序资源”部分中指定的两个子网中。
如何指定要在使用计数参数创建的特定子网中创建的应用程序服务器,如下面的 “公共子网资源”部分中指定的。
.
变量声明:
variable "subnet_private_cidr" {
type = "list"
default = ["10.10.1.0/24", "10.10.2.0/24", "10.10.3.0/24", "10.10.4.0/24"]
}
variable "subnet_public_cidr" {
type = "list"
default = ["10.10.0.0/24", "10.10.5.0/24", "10.10.6.0/24", "10.10.7.0/24"]
}
variable "azs" {
type = "list"
default = ["us-east-1a", "us-east-1b", "us-east-1c", "us-east-1d"]
}
公共子网资源:
resource "aws_subnet" "qasubnet_public" {
count = "${length(var.subnet_public_cidr)}"
vpc_id = "${aws_vpc.qa_vpc.id}"
cidr_block = "${element(var.subnet_public_cidr,count.index)}"
availability_zone = "${element(var.azs,count.index)}"
tags {
Name = "QASUBNET_PUBLIC-${count.index+1}"
}
}
私有子网资源:
resource "aws_subnet" "qasubnet_private" {
count = "${length(var.subnet_private_cidr)}"
vpc_id = "${aws_vpc.qa_vpc.id}"
cidr_block = "${element(var.subnet_private_cidr,count.index)}"
availability_zone = "${element(var.azs,count.index)}"
tags {
Name = "QASUBNET_PRIVATE-${count.index+1}"
}
}
网络服务器资源:
resource "aws_instance" "webserver" {
count = "${length(var.subnet_public_cidr)}"
ami = "${var.webserver_ami}"
instance_type = "t2.medium"
vpc_security_group_ids = ["${aws_security_group.webserver.id}"]
key_name = "${var.aws_key_name}"
subnet_id = "${element(aws_subnet.qasubnet_public.*.id,count.index)}"
}
申请资源:
resource "aws_instance" "appserver" {
count = 2
ami = "${var.appserver_ami}"
instance_type = "t2.medium"
vpc_security_group_ids = ["${aws_security_group.appserver.id}"]
key_name = "${var.aws_key_name}"
subnet_id = "${element(aws_subnet.qasubnet_private.*.id,0)}"
subnet_id = "${element(aws_subnet.qasubnet_private.*.id,1)}"
}
解决方案
我不确定你想做什么:
subnet_id = "${element(aws_subnet.qasubnet_private.*.id,0)}"
subnet_id = "${element(aws_subnet.qasubnet_private.*.id,1)}"`
在您的资源“aws_instance.appserver”中,它应该只是一个子网 ID参考:
subnet_id = "${element(aws_subnet.qasubnet_private.*.id,count.index)}"
使用计数语句,这将为每个子网提供一个实例。