Terraform for_each 无法识别变量中的所有值

Question

我定义了以下变量：

variable "animals" {
  description = "Animal S3 buckets"
  default = {
    cat = {
      name = "cat-logs",
      description  = "Logs for cat bucket"
    },
    dog = {
      name = "config-logs",
      description  = "Logs for dog bucket"
    },
    mouse = {
      name = "mouse-logs",
      description  = "Logs for mouse bucket"
    },
    fish = {
      name = "fish-logs",
      description = "Logs for fish bucket"
  }
}

#Queue
resource "aws_sqs_queue" "animal_queues" {
  for_each = var.animals
  name     = "${each.value.name}"
  redrive_policy = jsonencode({
    deadLetterTargetArn = aws_sqs_queue.s3_replication_dl[each.key].arn
    maxReceiveCount     = 50
  })
}

#DL Queue
resource "aws_sqs_queue" "animal_dl" {
  for_each = var.animals
  name     = "${each.value.name}-dl"
}

我会说，当变量中只有“cat”和“dog”时，我已经成功运行了这个。目前，猫和狗有一个sqs队列。从那时起，我添加了两个新元素：“鼠标”和“鱼”

现在运行代码时，无论是尝试应用还是销毁，都会出现如下错误：

Error: Invalid index
  on main.tf line 303, in resource "aws_sqs_queue" "animal_queues":
 303:     deadLetterTargetArn = aws_sqs_queue.animal_dl[each.key].arn
    |----------------
    | aws_sqs_queue.animal_dl is object with 2 attributes
    | each.key is "mouse" 
    | each.key is "fish"
The given key does not identify an element in this collection value.

不确定这里出了什么问题，因为它以前工作过。非常感谢任何指导。

Answer 1

我能够重现错误并最终通过将这一行将deadLetterTargetArn = aws_sqs_queue.s3_replication_dl[each.key].arn 更改为deadLetterTargetArn = join("",["aws_sqs_queue.s3_replication_dl",each.key,".arn"]) 来修复它

我使用 Terraform v0.15.5 进行了测试 在 v0.12.0 中引入了 join 函数

这是我使用 join 函数后得到的输出... lmk 如果这是您所期望的；

Terraform will perform the following actions:

  # aws_sqs_queue.animal_queues["cat"] will be created
  + resource "aws_sqs_queue" "animal_queues" {
      + arn                               = (known after apply)
      + content_based_deduplication       = false
      + deduplication_scope               = (known after apply)
      + delay_seconds                     = 0
      + fifo_queue                        = false
      + fifo_throughput_limit             = (known after apply)
      + id                                = (known after apply)
      + kms_data_key_reuse_period_seconds = (known after apply)
      + max_message_size                  = 262144
      + message_retention_seconds         = 345600
      + name                              = "cat-logs"
      + name_prefix                       = (known after apply)
      + policy                            = (known after apply)
      + receive_wait_time_seconds         = 0
      + redrive_policy                    = jsonencode(
            {
              + deadLetterTargetArn = "aws_sqs_queue.s3_replication_dlcat.arn"
              + maxReceiveCount     = 50
            }
        )
      + tags_all                          = (known after apply)
      + url                               = (known after apply)
      + visibility_timeout_seconds        = 30
    }

  # aws_sqs_queue.animal_queues["dog"] will be created
  + resource "aws_sqs_queue" "animal_queues" {
      + arn                               = (known after apply)
      + content_based_deduplication       = false
      + deduplication_scope               = (known after apply)
      + delay_seconds                     = 0
      + fifo_queue                        = false
      + fifo_throughput_limit             = (known after apply)
      + id                                = (known after apply)
      + kms_data_key_reuse_period_seconds = (known after apply)
      + max_message_size                  = 262144
      + message_retention_seconds         = 345600
      + name                              = "config-logs"
      + name_prefix                       = (known after apply)
      + policy                            = (known after apply)
      + receive_wait_time_seconds         = 0
      + redrive_policy                    = jsonencode(
            {
              + deadLetterTargetArn = "aws_sqs_queue.s3_replication_dldog.arn"
              + maxReceiveCount     = 50
            }
        )
      + tags_all                          = (known after apply)
      + url                               = (known after apply)
      + visibility_timeout_seconds        = 30
    }

  # aws_sqs_queue.animal_queues["fish"] will be created
  + resource "aws_sqs_queue" "animal_queues" {
      + arn                               = (known after apply)
      + content_based_deduplication       = false
      + deduplication_scope               = (known after apply)
      + delay_seconds                     = 0
      + fifo_queue                        = false
      + fifo_throughput_limit             = (known after apply)
      + id                                = (known after apply)
      + kms_data_key_reuse_period_seconds = (known after apply)
      + max_message_size                  = 262144
      + message_retention_seconds         = 345600
      + name                              = "fish-logs"
      + name_prefix                       = (known after apply)
      + policy                            = (known after apply)
      + receive_wait_time_seconds         = 0
      + redrive_policy                    = jsonencode(
            {
              + deadLetterTargetArn = "aws_sqs_queue.s3_replication_dlfish.arn"
              + maxReceiveCount     = 50
            }
        )
      + tags_all                          = (known after apply)
      + url                               = (known after apply)
      + visibility_timeout_seconds        = 30
    }

  # aws_sqs_queue.animal_queues["mouse"] will be created
  + resource "aws_sqs_queue" "animal_queues" {
      + arn                               = (known after apply)
      + content_based_deduplication       = false
      + deduplication_scope               = (known after apply)
      + delay_seconds                     = 0
      + fifo_queue                        = false
      + fifo_throughput_limit             = (known after apply)
      + id                                = (known after apply)
      + kms_data_key_reuse_period_seconds = (known after apply)
      + max_message_size                  = 262144
      + message_retention_seconds         = 345600
      + name                              = "mouse-logs"
      + name_prefix                       = (known after apply)
      + policy                            = (known after apply)
      + receive_wait_time_seconds         = 0
      + redrive_policy                    = jsonencode(
            {
              + deadLetterTargetArn = "aws_sqs_queue.s3_replication_dlmouse.arn"
              + maxReceiveCount     = 50
            }
        )
      + tags_all                          = (known after apply)
      + url                               = (known after apply)
      + visibility_timeout_seconds        = 30
    }

Plan: 4 to add, 0 to change, 0 to destroy.