访问 Terraform 数据块中对象内的对象

Question

我希望你能帮助我。

我已经使用 hasicorp/vsphere 提供商设置了 Terraform 管道，并且正在尝试从 tfvars 文件创建具有 2 个 NIC 的虚拟机。我正在尝试从 vsphere_virtual_machine 资源中创建一个模块，但我得到的只是错误

我的 tfvars 文件格式如下

Terraform\VMWare\NewBuildCluster\vmware_server_build.tfvars

tfvars = {

  # Core vSphere Vars
  vsphere_server            = "vcentre.example.com" # Address of vCentre
  vsphere_datacenter        = "vsphere_datacenter" # Location to build new servers
  vsphere_datastore         = "datastore0001" # Data store to save VM files
  vsphere_cluster           = "NewBuildCluster" # Cluster to build on

  #VM Related Vars
  vm = {
    TestVM01 = {
      vsphere_vm_template             = "WindowsTemplate2022" # Name of template
      vsphere_vm_name                 = "TestVM01" # Name of VM
      vsphere_vm_cpu_cores            = 4 # Total cores
      vsphere_vm_num_cores_per_socket = 2 # Cores per socket
      vsphere_vm_memory               = 8 # RAM assignment (Math conducted in module for MB conversion)

      #VM Customisation Variables
      vm_nics = {
        eth0 = {
          vsphere_vm_network        = "VLAN10" # Name of Virtual Network (defined in vSphere)
          vsphere_vm_domain         = "ad.example.com" # Domain to join server to once built
          vsphere_vm_ip             = "10.200.10.240" # Static assigned IP address
          vsphere_vm_ip_gateway     = "10.200.10.1" # Gateway IP Address
          vsphere_vm_ip_dnslist     = ["10.200.10.10", "10.200.10.30"]  # List of DNS addresses
        },
        eth1 = {
          vsphere_vm_network        = "VLAN10" # Name of Virtual Network (defined in vSphere)
          vsphere_vm_domain         = "ad.example.com" # Domain to join server to once built
          vsphere_vm_ip             = "10.200.10.241" # Static assigned IP address
          vsphere_vm_ip_gateway     = "10.200.10.1" # Gateway IP Address
          vsphere_vm_ip_dnslist     = ["10.200.10.10", "10.200.10.30"]  # List of DNS addresses
        }
      }

      data_disk = {
        disk1 = {
          size_gb = 50 # Data disk size
        },
        disk2 = {
          size_gb = 10 # Data disk size
        }
      }
      
    }
}

我的网络数据块是这样的，但我无法访问整个vm_nics。

Pipeline\VMWare\main.tf

data "vsphere_virtual_machine" "network" {
  for_each = flatten([
    for vm_key, vm_value in var.tfvars.vm : [
      for nic_key, nic_value in vm_value.vm_nics : {
        name         = nic_value.vsphere_vm_network
        datacenter_id = data.vsphere_datacenter.datacenter.id
      }
    ]
  ])

  name          = each.value.name
  datacenter_id = each.value.datacenter_id
}

这使我尽可能接近变量，但我收到此错误

│ The given "for_each" argument value is unsuitable: the "for_each" argument
│ must be a map, or set of strings, and you have provided a value of type
│ tuple.

Answer 1

是的，for_each 参数不正确...

我们可以提供一组字符串（使用

toset

）并将其更改为：

  for_each = toset(flatten([
    for vm_key, vm_value in var.tfvars.vm : [
      for nic_key, nic_value in vm_value.vm_nics : nic_value.vsphere_vm_network
    ]
  ]))

我认为没有必要包括

datacenter_id = data.vsphere_datacenter.datacenter.id

这可以被认为是一个常量，我认为不依赖于该资源和 tfvars，它不需要位于该循环内。

---

这是一个完整的例子

variable "tfvars" {
  type = any
  default = {
    vm = {
      TestVM01 = {
        vm_nics = {
          eth0 = {
            vsphere_vm_network = "VLAN10"
          },
          eth1 = {
            vsphere_vm_network = "VLAN10"
          }
        }
      }
    }
  }
}

resource "null_resource" "tion" {
  for_each = toset(flatten([
    for vm_key, vm_value in var.tfvars.vm : [
      for nic_key, nic_value in vm_value.vm_nics : nic_value.vsphere_vm_network
    ]
  ]))

  provisioner "local-exec" {
    when    = create
    command = "echo ${each.value.name}"
  }
}

地形计划将如下所示：

Terraform will perform the following actions:

  # null_resource.tion["VLAN10"] will be created
  + resource "null_resource" "tion" {
      + id = (known after apply)
    }

Plan: 1 to add, 0 to change, 0 to destroy.