Terraform：动态路由表路由，无法从字符串列表中检索元素答案

【问题标题】：Terraform: Dynamic route table routes, could not retrieve elements from list of stringTerraform：动态路由表路由，无法从字符串列表中检索元素
【发布时间】：2021-01-09 07:39:59
【问题描述】：

我在将路线转换为动态路线时遇到了问题。默认情况下，我有 3 个可用区域，每个区域都有自己的 nat 网关，当我尝试使用这些 nat gateways 时，我收到了不同类型的错误。

这是nat.tf的输出（返回>列表[字符串]）

output "nat_ids" {
   description = "The id of created nat gateway"
   value       = aws_nat_gateway.nat.*.id
}

这里是aws_route_table的块

resource "aws_route_table" "route"   {
   count                             = length(var.subnets)
   vpc_id                            = var.vpc_id

   # Route Table For IPv4
   dynamic "route" {
       for_each                      = var.route_table_ipv4
       content {
         cidr_block                  = lookup(route.value, "cidrblock", "" )
         gateway_id                  = lookup(route.value, "igw",  "" )
         instance_id                 = lookup(route.value, "instance",  "" )
         nat_gateway_id              = compact(split(",", lookup(route.value, "nat",   "")))
         vpc_endpoint_id             = lookup(route.value, "vpc_endpoint",  "" )
         local_gateway_id            = lookup(route.value, "local_gateway", "" )
         transit_gateway_id          = lookup(route.value, "transit_gateway", "" )
         network_interface_id        = lookup(route.value, "network_interface", "" )
         vpc_peering_connection_id   = lookup(route.value, "vpc_peering", "" )
       }      
   }
   tags = var.map_tags
}

这是错误信息：

Error: Invalid value for module argument

  on main.tf line 211, in module "private_routing":
 211:    route_table_ipv4              = local.route_table_ipv4.private

The given value is not suitable for child module variable "route_table_ipv4"
defined at ../Resources/Network/Routings/variables.tf:107,1-28: element 0:
element "nat": string required.


Error: Incorrect attribute value type

  on ../Resources/Network/Routings/main.tf line 28, in resource "aws_route_table" "route":
  28:          nat_gateway_id              = compact(split(",", lookup(route.value,   "nat",   "")))

Inappropriate value for attribute "nat_gateway_id": string required.

我的问题是什么？我做错了什么？我尝试了很多选项，例如

element(concat(lookup(route.value, "nat", "" ), [""]), count.index)

element(lookup(route.value, "nat"), count.index)

compact(split(",", lookup(route.value, "nat", "")))

这里是主模块中的变量和声明方式

variable "route_table_ipv4"    {
   description = "The list of routes for IPv4 'CIDR' block(s)"
   type        = list(map(string))
   default     = null
}

. . . other modules . . .

route_table_ipv4 = local.route_table_ipv4.private

. . . other modules . . .


locals{
   route_table_ipv4  = {
     private = [
       {
         nat = module.gateways.nat_ids 
         cidrblock = "0.0.0.0/0"  
       }  
     ]
   }
}

我希望我的帖子也能对遇到同样问题的其他人有所帮助，我希望它不会太长，我尽量减少代码。期待您的 cmets 和答案。 internet gateway 是没有问题的

【问题讨论】：

标签： amazon-web-services terraform terraform-provider-aws

【解决方案1】：

我找到了解决办法

1 - 我已将变量的拼写错误更改为任何 2 - 我使用连接到 nat 网关的输出，而不是在资源中我只是拆分和计算索引

【讨论】：