[英]Creating multiple Alias records in Terraform with for_each
I am trying to create multiple alias DNS records in terraform using for_each.我正在尝试使用 for_each 在 terraform 中创建多个别名 DNS 记录。 I am getting an error when specifying the name and zone ID of the Alias name.
指定别名的名称和区域 ID 时出现错误。 My question is how do I read from a variable defined as a set of strings?
我的问题是如何从定义为一组字符串的变量中读取? Below is my code block and variables defined:
下面是我定义的代码块和变量:
resource "aws_route53_record" "alias_records" {
for_each = var.alias_names
zone_id = aws_route53_zone.zone.zone_id
name = each.key
type = "A"
alias {
name = var.alias_dns_names[each.key]
zone_id = var.alias_zone_ids[each.key]
evaluate_target_health = false
}
}
variable "alias_names" {
type = set(string)
}
variable "alias_dns_names" {
type = set(string)
}
variable "alias_zone_ids" {
type = set(string)
}
Error: Invalid index
on alias.tf line 8, in resource "aws_route53_record" "alias_records":
8: name = var.alias_dns_names[each.key]
This value does not have any indices.
Error: Invalid index
on alias.tf line 9, in resource "aws_route53_record" "alias_records":
9: zone_id = var.alias_zone_ids[each.key]
This value does not have any indices.
alias_names = [
"alias1",
"alias2",
"alias3"
}
alias_dns_names = [
"alias_dns_1",
"alias_dns_2",
"alias_dns_3"
}
alias_zone_ids = [
"alias_zone_1",
"alias_zone_2",
"alias_zone_3"
}
A set data structure is not ordered and its elements don't have any identifiers other than their values, so the set type is not appropriate for your use-case here.集合数据结构是无序的,并且它的元素除了它们的值之外没有任何标识符,因此集合类型不适合您的用例。
Since you seem to be describing three different aspects of the same underlying object here, I think the most convenient way to expose that from your module would be as a map of objects, like this:由于您似乎在这里描述了相同底层 object 的三个不同方面,我认为从您的模块中公开它的最方便的方法是作为对象的 map,如下所示:
variable "aliases" {
type = map(object({
zone_id = string
dns_name = string
}))
}
You can then use this variable alone to capture all three of the values you need for each alias record:然后,您可以单独使用此变量来捕获每个别名记录所需的所有三个值:
aliases = {
alias1 = {
zone_id = "alias_zone_1"
dns_name = "alias_dns_1"
}
alias2 = {
zone_id = "alias_zone_2"
dns_name = "alias_dns_2"
}
alias3 = {
zone_id = "alias_zone_3"
dns_name = "alias_dns_3"
}
}
A map of any data type can be used directly with resource for_each
, with each.key
representing the map key and each.value
representing the value.任何数据类型的 map 都可以直接与资源
for_each
一起使用,其中each.key
表示 map 键, each.value
表示值。 So you can then change your resource block like this:因此,您可以像这样更改资源块:
resource "aws_route53_record" "alias_records" {
for_each = var.aliases
zone_id = aws_route53_zone.zone.zone_id
name = each.key
type = "A"
alias {
zone_id = each.value.zone_id
name = each.value.dns_name
evaluate_target_health = false
}
}
Because the elements of the map are objects, you can access them from each.value
to get the zone_id
and dns_name
values that correspond with each key in the original map.因为 map 的元素是对象,所以可以从
each.value
访问它们,以获取与原始 map 中的每个键对应的zone_id
和dns_name
值。
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