Terraform-使用字符串连接/连接变量

Question

变量.tf

variable "env_name" {
default = "some_client"
}
variable "azure_instance_names" {
default = [
"AD01",
"AD01",
]
}

我'，试图为azure_instance_names变量中指定的尽可能多的实例创建公共IP(在本例中为2)，我在命名此资源时遇到问题，我想通过连接env_name和azure_instance_names变量来创建名称。它必须是一个单词，由-分隔，所以名称应该在env_name-azure_instance_names中，例如：

所需输出

name=some_client-AD01 some_client-AD02

实际输出：

name=some_client AD01 some_client AD02

主.tf

resource "azurerm_public_ip" "datasourceip" {    
count               = "${length(var.azure_instance_names)}"
name                = "${join("-", list(format("%s %s", var.env_name, element(var.azure_instance_names, count.index))))}"
location            = "${azurerm_resource_group.res_group.location}"
resource_group_name = "${azurerm_resource_group.res_group.name}"
allocation_method   = "Static"
}

在地形应用中，我得到了：

+ azurerm_public_ip.datasourceip[1]
id:                      <computed>
allocation_method:       "Static"
fqdn:                    <computed>
idle_timeout_in_minutes: "4"
ip_address:              <computed>
ip_version:              "IPv4"
location:                "westeurope"
name:                    "some_client AD01"
resource_group_name:     "myrg1"
sku:                     "Basic"
tags.%:                  <computed>

由于Azure不接受多个单词i'中的资源名称，因此尝试将"-"联接到var.env_name, var.azure_instance_names，因此资源名称应为some_client-AD01

虽然我指定了联接函数i'，但仍然得到相同的错误：

azurerm_public_ip.datasourceip.1：创建/更新公用ip"some_client AD01"(资源组"myrg1")时出错：网络。PublicIPAddressesClient#CreateOrUpdate:发送请求失败：StatusCode=400--原始错误：Code="InvalidResourceName"Message="资源名称some_client LBA-PEU2B-AD01无效。名称最多可以有80个字符。它必须以单词字符开头，也必须以单词或''结尾。名称可以包含单词字符或'.'、'-'、''。"详细信息=[]

Answer 1

只需始终使用插值：

name = "${var.env_name}-${var.azure_instance_names[count.index]}"

我还发现${var.foo[i]}比${element(var.foo, i)}更容易阅读。

Answer 2

愚蠢的我！！，解决方案很简单：

我只需要以这种方式连接var.env_name和${format("%s",element(var.azure_instance_names, count.index))，而不是将两个变量都放入联接函数中：

name =  "${var.env_name}-${format("%s",element(var.azure_instance_names, count.index))}"

azurerm_public_ip.datasourceip[1]: Creating...
allocation_method:       "" => "Static"
fqdn:                    "" => "<computed>"
idle_timeout_in_minutes: "" => "4"
ip_address:              "" => "<computed>"
ip_version:              "" => "IPv4"
location:                "" => "westeurope"
name:                    "" => "some_client-AD01"
resource_group_name:     "" => "myrg1"
sku:                     "" => "Basic"
tags.%:                  "" => "<computed>"
azurerm_public_ip.datasourceip[0]: Creating...
allocation_method:       "" => "Static"
fqdn:                    "" => "<computed>"
idle_timeout_in_minutes: "" => "4"
ip_address:              "" => "<computed>"
ip_version:              "" => "IPv4"
location:                "" => "westeurope"
name:                    "" => "some_client-AD02"
resource_group_name:     "" => "myrg1"
sku:                     "" => "Basic"
tags.%:                  "" => "<computed>"
azurerm_public_ip.datasourceip[1]: Creation complete after 5s (ID: /subscriptions/2a325f88-e3dd-48c2-bf85-...PAddresses/some_client-AD01)
azurerm_public_ip.datasourceip[0]: Creation complete after 5s (ID: /subscriptions/2a325f88-e3dd-48c2-bf85-...PAddresses/some_client-AD02)
Apply complete! Resources: 2 added, 0 changed, 0 destroyed.