在 Terraform 中，如何從列表中獲取 output 的值？

Question

我正在嘗試獲取 output 以顯示正在創建的 IAM 用戶的名稱。

resource "aws_iam_user" "lb" {
    name = var.elb_names[count.index]
    count = 3
    path = "/system/"
}

variable "elb_names" {
    type = list
    default = ["dev-lb", "qa-lb", "prod-lb"]
}

output "elb_names" {
    value = aws_iam_user.lb.name[count.index]
}

我希望得到以下 output

1. 開發lb
2. qa-lb
3. 產品磅

但我收到這個錯誤......

Error: Missing resource instance key
on countEC2.tf line 38, in output "elb_names":
38:     value = aws_iam_user.lb.name[count.index]

Because aws_iam_user.lb has "count" set, its attributes must be accessed on specific instances.

For example, to correlate with indices of a referring resource, use:
aws_iam_user.lb[count.index]

Answer 1

您將不得不使用稍微不同的方法：

output "elb_names" {
    value = aws_iam_user.lb[*].name
}

這是splat表達式 [1]。 請注意，output 將是一個列表。

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[1] https://developer.hashicorp.com/terraform/language/expressions/splat