英文:
How to fix terraform error var.zaccounts is list of string with 1 element
问题
Sure, here's the translated text:
我想要一个字符串列表，而我的一个帐户（由tfstate支持）恰好在列表中有一个1。我感到困惑的是为什么您可以循环遍历大小为1的列表。代码如下：
resource "datadog_dashboard" "hq" {
for_each = var.zaccounts
...
然后变量是：
variable "zaccounts" {
type = list(string)
default = []
description = "帐户列表"
}
var.auto.vars 是：
zaccounts = [ "zmainbranch" ]
在这个示例中，当我们运行时，只有一个tfstate，一个帐户，开发人员创建了一个基本上创建上述tf文件的框架，因此我们没有使用工作区或其他任何东西。这是一个相当简单的示例。
我不确定在这里应该尝试什么，因为错误是违反直观的，准确地说出了在任何编程语言中都应该能够执行的操作 - 即，您应该能够循环遍历大小为1的列表。
英文:
I want a list of strings and one of my accounts (backed by tfstate) happens to have 1 in the list. I am confused why you can loop over list of size 1. The code is simply
resource "datadog_dashboard" "hq" {
for_each = var.zaccounts
...
and then the var is
variable "zaccounts" {
type = list(string)
default = []
description = "List of accounts"
}
var.auto.vars is
zaccounts = [ "zmainbranch" ]
In the example, when we run there is only ONE tfstate, ONE account and a developer created a framework which basically creates the above tf files so we are not using workspaces or anything else. It is a pretty simple example.
I am not sure what to try here as the error is counter intuitive saying exactly what you should be able to do in any programming language - ie. you should be able to loop over a list of size 1.
答案1
得分: 2
The for_each meta argument can work only with maps and sets:
> If a resource or module block includes a for_each argument whose value is a map or a set of strings, Terraform creates one instance for each member of that map or set.
So you could either define the variable as a set of strings or perform a conversion to a set:
resource "datadog_dashboard" "hq" {
for_each = toset(var.zaccounts)
...
}
As mentioned, alternatively you can redefine the variable:
variable "zaccounts" {
type = set(string)
default = []
description = "List of accounts"
}
In that case, you would not need the toset built-in function, the code you have can remain as-is.
英文:
The for_each meta argument can work only with maps and sets:
> If a resource or module block includes a for_each argument whose value is a map or a set of strings, Terraform creates one instance for each member of that map or set.
So you could either define the variable as a set of strings or perform a conversion to a set:
resource "datadog_dashboard" "hq" {
for_each = toset(var.zaccounts)
...
}
As mentioned, alternatively you can redefine the variable:
variable "zaccounts" {
type = set(string)
default = []
description = "List of accounts"
}
In that case, you would not need the toset built-in function, the code you have can remain as-is.
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