amazon-web-services - Terraform:如何从 VPC id 获取 VPC CIDR？

Question

我正在尝试获取 PIV4_CIDR 对于给定的 VPC，首先使用 aws_vpcs 数据源识别 VPC 并从 ID 获取 CIDR - 是否可能？

只是一点背景知识，出于某种设计原因，我们在不同的 VPC 中提供服务。说，例如。我有三个 VPC:xxxprod-n , xxxprod-l和 xxxprod-h我想为整个子网添加 SG 规则以允许访问特定端口。这是我尝试过的:

data "aws_vpcs" "prod" {
  tags = {
    Name = "${var.project}prd-*"
  }
}

resource "aws_security_group_rule" "pa-allow" {
  count             = length(data.aws_vpcs.prod.ids)
  type              = "ingress"
  from_port         = 8140
  to_port           = 8140
  protocol          = "tcp"
  cidr_blocks       = [sort(data.aws_vpcs.prod.ids)[count.index].cidr_block]
  security_group_id = aws_security_group.secg.id
  description       = "allow from ${sort(data.aws_vpcs.prod.ids)[count.index]}"
}

我收到错误:

Error: Unsupported attribute

on ../../modules/mgt/ec2.tf line 42, in resource "aws_security_group_rule" "pa-allow": 42: cidr_blocks = [sort(data.aws_vpcs.prod.ids)[count.index].cidr_block]

This value does not have any attributes.

我试过了，基于这个页面: https://www.terraform.io/docs/providers/aws/d/vpc.html ，认为 aws_vpc 和 aws_vpcs 会做类似的事情，但似乎没有。知道我该怎么做吗？

Answer 1

您可以获得SET (不是列表)使用 data.aws_vpcs 的 vpc。 (我认为文档是错误的...)
然后您可以使用 data.aws_vpcs 获取 data.aws_vpc 列表，您可以获取它们的 cidr 块。

data "aws_vpcs" "prod" {
  tags = {
    Name = "${var.project}prd-*"
  }
}

data "aws_vpc" "prod" {
  count = length(data.aws_vpcs.prod.ids)
  id    = tolist(data.aws_vpcs.prod.ids)[count.index]
}

resource "aws_security_group_rule" "pa-allow" {
  count             = length(data.aws_vpcs.prod.ids)
  type              = "ingress"
  from_port         = 8140
  to_port           = 8140
  protocol          = "tcp"
  cidr_blocks       = [data.aws_vpc.prod[count.index].cidr_block]
  security_group_id = aws_security_group.secg.id
  description       = "allow from ${tolist(data.aws_vpcs.prod.ids)[count.index]}"
}