使用Terraform在多个S3桶中创建多个文件夹

Question

我希望创建一个S3 terraform模块，它可以获取要在所有桶中创建的桶名和文件夹名的列表。例如，在我的S3模块main.tf中。我有过

resource "aws_s3_bucket_object" "folders" {
    count = var.create_folders ? length(var.s3_folder_names) : 0
    bucket  = element(aws_s3_bucket.s3bucket.*.id, count.index)
    acl    = "private"
    key    = format("%s/",var.s3_folder_names[count.index])
    source = "/dev/null"
}

我称之为这个模块，如下所示：

variable "s3_bucket_name" {
  type = list
  description = "List of S3 bucket names"
default = ["bucket1","bucket-2"]
}
variable "s3_folder_names" {
  type        = list
  description = "The list of S3 folders to be created inside S3 bucket"
  default=["folder1/dev","folder2/qa"]

}
module "s3" {
  source = "../../../gce-nextgen-cloud-terraform-modules/modules/s3"
  create_folders = true
  s3_folder_names = var.s3_folder_names
  environment = var.environment
  s3_bucket_name = var.s3_bucket_name
  force_destroy = true
  bucket_replication_enabled = true
  tags = local.common_tags
  providers = {
    aws.main_region = aws.main_region
    aws.secondary_region = aws.secondary_region
  }
}

我面临问题，因为计数变量只能在资源块中设置一次。下面是警告问题的场景：

1. If var.s3_folder_names < aws_s3_bucket.s3bucket.*.id.然后，我将无法访问S3桶列表的所有元素，如下面的

所示

resource "aws_s3_bucket_object" "folders" {
    count = var.create_folders ? length(var.s3_folder_names) : 0
    **bucket  = element(aws_s3_bucket.s3bucket.*.id, count.index)**
    acl    = "private"
    key    = format("%s/",var.s3_folder_names[count.index])
    source = "/dev/null"
}

因此，由于这一点，我将无法在所有桶中创建这些文件夹。唯一的目标是在所有这些桶中创建相同的文件夹结构集。任何帮助都是非常感谢的。提前感谢！

Answer 1

您可以创建一个组合数据结构，例如：

locals {

  buckets_and_folders = merge([
    for bucket in var.s3_bucket_name:
      {
        for folder in var.s3_folder_names:
        "${bucket}-${folder}" => {
          bucket = bucket
          folder = folder
        }
      }
  ]...)

}

然后使用for_each迭代这个结构。

resource "aws_s3_bucket_object" "folders" {

    for_each = var.create_folders ? local.buckets_and_folders : {}

    bucket  = each.value.bucket
    acl    = "private"
    key    = format("%s/", each.value.folder)
    source = "/dev/null"
}