Terraform vSphere新模板重新创建已有虚拟机

Question

我使用Packer创建Linux模板映像。使用Terraform使用模板镜像部署虚拟机。但是每当我更新模板并尝试创建新的VM时。Terraform破坏现有的虚拟机并重新创建。

当我重新创建新的模板映像时，我不想影响现有的虚拟机，我只希望使用新的模板创建新的虚拟机。如何处理这种情况?

下面是我用来创建虚拟机的Terraform代码。

# =================== #
# Deploying VMware VM #
# =================== #
# Connect to VMware vSphere vCenter
provider "vsphere" {
user = var.vsphere-user
password = var.vsphere-password
vsphere_server = var.vsphere-vcenter
# If you have a self-signed cert
allow_unverified_ssl = var.vsphere-unverified-ssl
}
# Define VMware vSphere 
data "vsphere_datacenter" "dc" {
name = var.vsphere-datacenter
}
data "vsphere_datastore" "datastore" {
name = var.vm-datastore
datacenter_id = data.vsphere_datacenter.dc.id
}
data "vsphere_compute_cluster" "cluster" {
name = var.vsphere-cluster
datacenter_id = data.vsphere_datacenter.dc.id
}
data "vsphere_network" "network" {
name = var.vm-network
datacenter_id = data.vsphere_datacenter.dc.id
}
data "vsphere_virtual_machine" "template" {
name = var.vm-template-name
datacenter_id = data.vsphere_datacenter.dc.id
}
# Create VMs
resource "vsphere_virtual_machine" "vm" {
count = var.vm-count
# VM Name
name = upper(var.vm-name)
resource_pool_id = data.vsphere_compute_cluster.cluster.resource_pool_id
datastore_id = data.vsphere_datastore.datastore.id

# System
guest_id = data.vsphere_virtual_machine.template.guest_id
scsi_type = data.vsphere_virtual_machine.template.scsi_type
firmware = data.vsphere_virtual_machine.template.firmware
# CPU
num_cpus = var.vm-cpu
num_cores_per_socket = 2
cpu_hot_add_enabled = true
cpu_hot_remove_enabled = true
# Memory
memory = var.vm-ram
memory_hot_add_enabled = true
network_interface {
network_id = data.vsphere_network.network.id
adapter_type = data.vsphere_virtual_machine.template.network_interface_types[0]
}
disk {
label = "disk0"
size = data.vsphere_virtual_machine.template.disks.0.size
eagerly_scrub = data.vsphere_virtual_machine.template.disks.0.eagerly_scrub
thin_provisioned = data.vsphere_virtual_machine.template.disks.0.thin_provisioned
unit_number = 0
}
disk {
label = "disk1"
unit_number = 1
size = 1
eagerly_scrub = data.vsphere_virtual_machine.template.disks.0.eagerly_scrub
thin_provisioned = data.vsphere_virtual_machine.template.disks.0.thin_provisioned
}
clone {
template_uuid = data.vsphere_virtual_machine.template.id
customize {
timeout = 15
linux_options {
host_name = lower(var.vm-name)
domain = var.vm-domain
}
network_interface {
ipv4_address = var.vm-ip
ipv4_netmask = var.vm-netmask
}
ipv4_gateway = var.vm-gateway
dns_suffix_list = var.vm-dns-suffix-list
dns_server_list = var.vm_dns_servers
}
}
}

Answer 1

这是一个老问题，但是有另一种方法可以使用生命周期元参数来处理这个问题。如果您添加如下内容，它应该告诉Terraform忽略对模板UUID的更改:

clone {
template_uuid = data.vsphere_virtual_machine.template.id
}
lifecycle {
ignore_changes = [
clone[0].template_uuid,
]
}

这样可以避免在模板更改时UUID更新。

代码取自相关Github Issue。