如何 for_each 在地图中使用基于工作空间的字符串

Question

我有这样的变量：

variable "hosts" {
    type = map(map(string))
    default = {
      workspace1 = {
        hostname1-workspace1-1 = 177.104
        hostname1-workspace1-2 = 177.105
        hostname1-workspace1-3 = 177.106
    }
      workspace2 = {
        hostname1-workspace2-1 = 129.124
        hostname1-workspace2-2 = 129.125
        hostname1-workspace2-3 = 129.126
    }
    }
}

并且我正在尝试 for_each 遍历此映射，因此我可以为映射中的每个主机创建一个 VM NIC，但仅限于选择的任何工作空间。其中 each.key 应该是当前所选工作区的名称，each.value 应该是基于工作区的 IP 地址的最后 2 个八位字节我试过这样的事情：

resource "azurerm_network_interface" "redis_vm_nic" {
    for_each = var.hosts[terraform.workspace]
    name                        = "${each.key}VMNic"
    location                    = "${var.redis_rg_location[terraform.workspace]}"
    resource_group_name         = azurerm_resource_group.infrastructure_redis_rg.name
    ip_configuration {
        name                          = "ipconfig${each.key}"
        subnet_id                     = var.aks_subnet
        private_ip_address_allocation = "Static"
        private_ip_address = "10.99.${each.value}"
    }
    tags =  var.tags_vms
}

但我得到：

│
│   on main.tf line 59, in resource "azurerm_linux_virtual_machine" "virtual_machine":
│   59:     network_interface_ids = [azurerm_network_interface.redis_vm_nic[each.key].id]
│     ├────────────────
│     │ azurerm_network_interface.redis_vm_nic is object with 3 attributes
│     │ each.key is "workspace1"
│
│ The given key does not identify an element in this collection value.
╵
╷
│ Error: Invalid index
│
│   on main.tf line 59, in resource "azurerm_linux_virtual_machine" "virtual_machine":
│   59:     network_interface_ids = [azurerm_network_interface.redis_vm_nic[each.key].id]
│     ├────────────────
│     │ azurerm_network_interface.redis_vm_nic is object with 3 attributes
│     │ each.key is "workspace2"
│
│ The given key does not identify an element in this collection value.
╵

Answer 1

你的问题肯定不在azurerm_network_interface。您在子地图上正确迭代。我认为问题在于您如何在 azurerm_linux_virtual_machine 中执行 for_each。根据我在错误中看到的内容，Linux VM 的 for_each 可能采用以下格式：

for_each = var.hosts

您最想拥有 azurerm_network_interface 中的原样，所以：

resource "azurerm_linux_virtual_machine" "virtual_machine" {
  for_each = var.hosts[terraform.workspace]
  ...
}

如何 for_each 在地图中使用基于工作空间的字符串

How to for_each over a map inside a map with strings based on workspace

foreach

terraform