如何从 Terraform 中的对象列表中获取对象? [英] How to get an object from a list of objects in Terraform?

问题描述

我有以下对象变量列表:

I have the following list of objects variable:

variable "objects" {
  type = "list"
  description = "list of objects
  default = [
      {
        id = "name1"
        attribute = "a"
      },
      {
        id = "name2"
        attribute = "a,b"
      },
      {
        id = "name3"
        attribute = "d"
      }
  ]
}

如何获取 id = "name2" 的元素?

How do I get element with id = "name2" ?

推荐答案

如果你想创建一组 vsphere_virtual_machine resources 来自 IP 和主机名列表，我可以试试这个:

If you're looking to create a set of vsphere_virtual_machine resources from a list of IPs and hostnames, I might try this:

resource "vsphere_virtual_machine" "vm" {
  count = "${length(var.virtual_machine_ips)}"

  // the rest of your virtual machine config
  // such as template ID, CPUs, memory, disks...

  vapp {
    properties {
      // your vApp properties may vary based on what your template actually is.
      // these examples are for the CoreOS template.

      "guestinfo.hostname" = "${index(var.virtual_machine_hostnames, count.index)}"
      "guestinfo.interface.0.ip.0.address" = "${index(var.virtual_machine_ips, count.index)}"
    }
  }
}

(这是假设您通过 vApp config; 如果不是，那么它可能看起来很相似，但将主机名和 IP 地址放在 vsphere_virtual_machine.vapp.properties 之外的某个位置 块.)

(This is assuming that you are setting IP and hostname via vApp config; if not then it may look similar but put the hostname and IP addresses somewhere outside the vsphere_virtual_machine.vapp.properties block.)

terraform.tfvars 文件可能如下所示:

virtual_machine_ips = ["10.0.2.2", "10.0.2.3", "10.0.2.4"]
virtual_machine_hostnames = ["banana", "pineapple", "coconut"]

这是一种更简单、更惯用的方式来完成您正在尝试做的事情，因为在 Terraform 插值语法中处理复杂对象并不容易.

This is a simpler and more idiomatic way of accomplishing what you're trying to do, since working with complex objects in Terraform interpolation syntax is not easy.

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