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Accepted
kegham
Asked: 2025-02-07 19:50:21 +0800 CST

Terraform 如何有条件地执行块

  • 772

我正在学习 Terraform 并尝试使用它在 Proxmox 中配置虚拟机，但遇到了一个问题，我只想在计数的第一个索引上添加第二个磁盘。

我尝试添加size = count.index == 0 ? "50G" : null磁盘块，但它不起作用，因为size参数需要一个值。

这是我的代码：

resource "proxmox_vm_qemu" "workers" {
  count       = 2
  name        = "${local.vm_worker_name}-${count.index + 1}"
  target_node = local.target_node
  vmid        = "21${count.index}"

  agent   = 1
  os_type = "linux"
  onboot  = true
  cores   = 4
  sockets = 1
  memory  = 4046
  scsihw  = "virtio-scsi-pci"
  tags    = local.vm_worker_tags

  disks {
    virtio {
      virtio0 {
        disk {
            size    = "15G"
            storage = "local-lvm"
            backup  = true  
        }
      }
      virtio1 {
        disk {
            size    = count.index == 0 ? "50G" : "0"
            storage = "local-lvm"
            backup  = true  
        }
      }      
    }
    ide {
        ide0 {
            cdrom {
                iso = local.talos_linux_iso
            }
        }      
    }
  }  

  network {
    id = 0
    model  = "virtio"
    bridge = "vmbr0"
    tag    = "100"
  }

  ipconfig0 = "ip=dhcp"
}

那么，如何使用 if/else 语句来实现这一点？

terraform

1 个回答

  1. Best Answer

    在这种情况下，使用dynamicwith 块for_each可以解决问题。例如：

    resource "proxmox_vm_qemu" "workers" {
  count       = 2
  name        = "${local.vm_worker_name}-${count.index + 1}"
  target_node = local.target_node
  vmid        = "21${count.index}"

  agent   = 1
  os_type = "linux"
  onboot  = true
  cores   = 4
  sockets = 1
  memory  = 4046
  scsihw  = "virtio-scsi-pci"
  tags    = local.vm_worker_tags

  disks {
    virtio {
     .
     .
     .
      
     dynamic "virtio1" {
       for_each = count.index == 0 ? [1] : []
       content {
         disk {
           size    = "50G"
           storage = "local-lvm"
           backup  = true  
         }
       }      
     }
    .
    .
    .
  }  

  .
  .
  .
}

    不过，我没有办法测试这一点，所以它可能有效，也可能无效。

    • 2

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