如何在terraform中的"subnet_mapping“中使用"for_each”，以便将创建的每个弹性IP映射到每个"subnet_id“

Question

//创建我的弹性公网my：

resource "aws_eip" "nlb_eips" {
  count = length(module.vpc.public_subnets)
}

//这需要创建我的NLB并附加弹性公网it：

resource "aws_lb" "data-lake-NLB" {

  name               = "data-lake-NLB"
  internal           = false
  load_balancer_type = "network"
  enable_deletion_protection = true
  subnet_mapping {
    for_each = {for k,v in     => ... )  }     ????? # This part I can't figure out. 
    subnet_id = each.key
    allocation_id = each.value
  }
}

Answer 1

您可以使用dynamic blocks

resource "aws_lb" "data-lake-NLB" {

  name               = "data-lake-NLB"
  internal           = false
  load_balancer_type = "network"
  enable_deletion_protection = true

  dynamic "subnet_mapping" {

      for_each = range(length(var.public_subnets))

      content {
         subnet_id     = module.vpc.public_subnets[ingress.key].id
         allocation_id = aws_eip.nlb_eips[ingress.key].id
      }
  }

}

确切的形式取决于module.vpc.public_subnets实际是什么。

Answer 2

  resource "aws_lb" "data-lake-NLB" {
  name               = "data-lake-NLB"
  internal           = false
  load_balancer_type = "network"
  enable_deletion_protection = true

  dynamic "subnet_mapping" { 
      for_each = local.for_each_map      
 aws_eip.nlb_eips[*].public_ip)
    content {
      subnet_id = subnet_mapping.key
      allocation_id = subnet_mapping.value
    }
  }
}
locals {
  for_each_map = zipmap(module.vpc.public_subnets, aws_eip.nlb_eips[*].id) 
}