从地图列表中的属性创建列表

Question

我有以下地图列表：

variable "virtual_machines" {
  default = {
    "master1" = {
       name         = "z-ca-bdc-master1"
       worker_node  = false
       ipv4_address = "192.168.113.79"
       ipv4_netmask = "22"
       ipv4_gateway = "192.168.112.1"
       dns_server   = "192.168.112.2"
       ram          = 8192
       logical_cpu  = 4
       disk0_size   = 40
       disk1_size   = 0
    },
    "master2" =  {
       name         = "z-ca-bdc-master2"
       worker_node  = false
       ipv4_address = "192.168.113.80"
       ipv4_netmask = "22"
       ipv4_gateway = "192.168.112.1"
       dns_server   = "192.168.112.2"
       ram          = 8192
       logical_cpu  = 4
       disk0_size   = 40
       disk1_size   = 0
    },

我想做的是创建一个我可以分配给变量的虚拟机名称列表，其中包含 z-ca-bdc-master1、z-ca-bdc-master2 等。 . .我怎样才能做到这一点？

我的最终目标是能够将其与 template_file 一起使用：

data "template_file" "k8s" {
  template = file("./templates/kubespray_inventory.tpl")

  vars = {
    k8s_master_host = values(var.virtual_machines)[*].name
    k8s_node_host   = values(var.virtual_machines)[*].name
  }
}

Answer 1

要从您的 var.virtual_machines 中获取“虚拟机名称列表”，您可以执行以下操作：

locals {
   vm_names = values(var.virtual_machines)[*].name
}

然后您可以在需要时将其用作local.vm_names。

更新：

locals {
   vm_names = [for k,v in var.virtual_machines: v.name if v.worker_node]
}