如何将数据源从一个模块引用到另一个模块并将其作为变量传递给根模块？
How to reference a data source from a module to another module and pass it as a variable to root module?
我的 terraform 目录结构如下：
terraform/
main.tf modules outputs.tf provider.tf variables.tf
./modules:
compute network resourcegroup
./modules/compute:
main.tf outputs.tf variables.tf
./modules/network:
main.tf outputs.tf variables.tf
./modules/resourcegroup:
main.tf outputs.tf variables.tf
资源组模块配置文件如下：
目的：在本模块中，我引用了一个现有资源组，我想利用它来创建虚拟机及其关联对象。
main.tf
data "azurerm_resource_group" "tf-rg-external" {
name = var.rg_name
}
variables.tf
variable "rg_name" {
type = string
}
网络模块
目的：我想使用资源组模块中的资源组在这个模块中引用。这样，我在一个地方定义并在根和其他模块示例、计算、应用程序服务、aks 等中使用它
main.tf
# Reference existing Virtual Network
data "azurerm_virtual_network" "tf-vn" {
name = var.vnet_name
resource_group_name = module.resource_groups.external_rg_name
}
# Reference existing subnet
data "azurerm_subnet" "tf-sn" {
name = var.subnet_name
virtual_network_name = data.azurerm_virtual_network.tf-vn.name
resource_group_name = module.resource_groups.external_rg_name
}
variables.tf
# Declare env variable
variable "vnet_name" {
type = string
}
variable "subnet_name" {
type = string
}
计算模块。
目的：定义计算（VM）的所有属性。这个想法是，根模块将使用这个模块来启动不同的 VM 角色。
main.tf
module "vm_iis" {
source = "Azure/compute/azurerm"
location = data.resourcegroup.tf-rg-external.location
vnet_subnet_id = data.network.tf-sn.id
admin_password = var.admin_password
data_sa_type = var.data_sa_type
delete_os_disk_on_termination = var.delete_os_disk_on_termination
nb_instances = var.nb_instances
nb_public_ip = var.nb_public_ip
public_ip_address_allocation = var.public_ip_address_allocation
resource_group_name = data.resourcegroup.tf-rg-external.name
.
.
.
}
variables.tf
variable "admin_password" {
type = string
}
variable "admin_username" {
type = string
}
variable "boot_diagnostics" {
type = bool
}
variable "boot_diagnostics_sa_type" {
type = string
}...
terraform 根模块。
目的：这应该利用定义的模块来创建各种不同大小和主机名的虚拟机
main.tf:
module "sql_vm" {
source = "./modules/compute/"
#location = data.resourcegroup.tf-rg-external.location
#vnet_subnet_id = data.network.tf-sn.id
public_ip_address_allocation = var.public_ip_address_allocation
#resource_group_name = data.resourcegroup.tf-rg-external.name
storage_account_type = var.storage_account_type
vm_hostname = var.vm_hostname
}
variables.tf: 声明 main.tf 文件中的所有变量。
注意：我有意在根模块 main/variable 文件中对变量进行硬编码。这只是让模块之间的通信正确。理解和使用模块的正确方法。
然而，当我 运行 terraform 在根模块中规划时。我收到以下错误：
Error: Reference to undeclared resource
on modules/compute/main.tf line 3, in module "vm_iis":
3: location = data.resourcegroup.tf-rg-external.location
A data resource "resourcegroup" "tf-rg-external" has not been declared in
sql_vm.
Error: Reference to undeclared resource
on modules/compute/main.tf line 4, in module "vm_iis":
4: vnet_subnet_id = data.network.tf-sn.id
A data resource "network" "tf-sn" has not been declared in sql_vm.
Error: Reference to undeclared resource
on modules/compute/main.tf line 22, in module "vm_iis":
22: resource_group_name = data.resourcegroup.tf-rg-external.name
A data resource "resourcegroup" "tf-rg-external" has not been declared in
sql_vm.
问题是什么以及如何解决？
此外，是否可以通过某些循环创建不同的（角色）虚拟机？例如 sql-vm、iis-vm、testvm、abcvm？将要改变的是它们的主机名和虚拟机大小。
==========
Post 答案更改
==========
我更新了子网、资源组和位置的值
compute/main.tf 和 terraform/main.tf 如下所示：
location = module.resourcegroup.tf-rg-external-location
vnet_subnet_id = module.network.subnet-id
resource_group_name = module.resourcegroup.tf-rg-external-name
我的 outputs.tf 文件在 resourcegroup 和 network 模块中如下所示:
outputs.tf 网络 模块
output "subnet-id" {
value = "data.network.tf-sn.id"
}
outputs.tf 资源组 模块
output "tf-rg-external-location" {
value = data.resourcegroup.tf-rg-external.location
}
output "tf-rg-external-name" {
value = data.resourcegroup.tf-rg-external.name
}
不幸的是，我仍然遇到如下错误
Error: Unsupported argument
on main.tf line 3, in module "sql_vm":
3: location = module.resourcegroup.tf-rg-external-location
An argument named "location" is not expected here.
Error: Unsupported argument
on main.tf line 4, in module "sql_vm":
4: vnet_subnet_id = module.network.subnet-id
An argument named "vnet_subnet_id" is not expected here.
Error: Unsupported argument
on main.tf line 5, in module "sql_vm":
5: resource_group_name = module.resourcegroup.tf-rg-external-name
An argument named "resource_group_name" is not expected here.
那么，看来我们不应该在根模块中引用它们？
此外，它们的变量应该在根模块 variables.tf 文件中定义，因为我相信您可以覆盖根模块中模块变量的值？
如果我显得很愚蠢，请原谅我。我正在尝试了解它在现实生活中的运作方式。
上次提交和 public 回购后，错误如下
Error: Reference to undeclared module
on main.tf line 3, in module "sql_vm":
3: location = module.resourcegroup.tf-rg-external-location
No module call named "resourcegroup" is declared in the root module.
Error: Reference to undeclared module
on main.tf line 4, in module "sql_vm":
4: vnet_subnet_id = module.network.subnet-id
No module call named "network" is declared in the root module.
Error: Reference to undeclared module
on main.tf line 5, in module "sql_vm":
5: resource_group_name = module.resourcegroup.tf-rg-external-name
No module call named "resourcegroup" is declared in the root module.
Error: Reference to undeclared module
on modules/compute/main.tf line 3, in module "vm_iis":
3: location = module.resourcegroup.tf-rg-external-location
No module call named "resourcegroup" is declared in sql_vm.
Error: Reference to undeclared module
on modules/compute/main.tf line 4, in module "vm_iis":
4: vnet_subnet_id = module.network.subnet-id
No module call named "network" is declared in sql_vm.
Error: Reference to undeclared module
on modules/compute/main.tf line 5, in module "vm_iis":
5: resource_group_name = module.resourcegroup.tf-rg-external-name
No module call named "resourcegroup" is declared in sql_vm.
Error: Reference to undeclared module
on modules/network/main.tf line 5, in data "azurerm_virtual_network" "tf-vn":
5: resource_group_name = module.resource_groups.external_rg_name
No module call named "resource_groups" is declared in test2.
Error: Reference to undeclared resource
on modules/resourcegroup/outputs.tf line 2, in output "tf-rg-external-location":
2: value = data.resourcegroup.tf-rg-external.location
A data resource "resourcegroup" "tf-rg-external" has not been declared in
test1.
Error: Reference to undeclared resource
on modules/resourcegroup/outputs.tf line 5, in output "tf-rg-external-name":
5: value = data.resourcegroup.tf-rg-external.name
A data resource "resourcegroup" "tf-rg-external" has not been declared in
test1.
浏览您正在处理的存储库 (https://github.com/ameyaagashe/help_me_cross/tree/d7485d2a3db339723e9c791e592b2f1dbc1f0788)。现在对我来说很有意义。
问题是，您将如何使用 public 模块的想法与您自己创建的模块混为一谈。
事实上，您不需要设置任何模块来引用其他 public terraform 注册表模块。
将子模块 (module/compute、module/network、module/resourcegroup) 中的所有代码移动到顶级文件夹 (<repo_root>/main.tf)。
如（代码未经验证，仅供参考）
data "azurerm_resource_group" "tf-rg-external" {
name = var.rg_name
}
data "azurerm_virtual_network" "tf-vn" {
name = var.vnet_name
resource_group_name = var.rg_name
}
# Reference existing subnet
data "azurerm_subnet" "tf-sn" {
name = var.subnet_name
virtual_network_name = data.azurerm_virtual_network.tf-vn.name
resource_group_name = var.rg_name
}
module "sql_vm" {
source = "Azure/compute/azurerm"
location = data.azurerm_resource_group.tf-rg-external.location
vnet_subnet_id = data.azurerm_virtual_network.tf-vn.subnets
resource_group_name = data.azurerm_resource_group.tf-rg-external.name
admin_password = var.admin_password
admin_username = var.admin_username
boot_diagnostics = var.boot_diagnostics
boot_diagnostics_sa_type = var.boot_diagnostics_sa_type
data_disk = var.data_disk
data_disk_size_gb = var.data_disk_size_gb
data_sa_type = var.data_sa_type
delete_os_disk_on_termination = var.delete_os_disk_on_termination
enable_accelerated_networking = var.enable_accelerated_networking
# flag is_windows_image is required only when you use a custom image to spin up a VM
# is_windows_image
# flag vm_os_id is required only when you are using custom image
# you need to provide id of your custom image
# vm_os_id
nb_instances = var.nb_instances
nb_public_ip = var.nb_public_ip
public_ip_address_allocation = var.public_ip_address_allocation
storage_account_type = var.storage_account_type
vm_hostname = var.vm_hostname
vm_os_offer = var.vm_os_offer
vm_os_publisher = var.vm_os_publisher
# vm_os_simple is to be used is you do not wish to specify offer, publisher and sku
# vm_os_simple = UbuntuServer, WindowsServer, RHEL, openSUSE-Leap, CentOS, Debian, CoreOS and SLES
vm_os_sku = var.vm_os_sku
vm_os_version = var.vm_os_version
vm_size = var.vm_size
}
我的 terraform 目录结构如下：
terraform/
main.tf modules outputs.tf provider.tf variables.tf
./modules:
compute network resourcegroup
./modules/compute:
main.tf outputs.tf variables.tf
./modules/network:
main.tf outputs.tf variables.tf
./modules/resourcegroup:
main.tf outputs.tf variables.tf
资源组模块配置文件如下：
目的：在本模块中，我引用了一个现有资源组，我想利用它来创建虚拟机及其关联对象。
main.tf
data "azurerm_resource_group" "tf-rg-external" {
name = var.rg_name
}
variables.tf
variable "rg_name" {
type = string
}
网络模块
目的：我想使用资源组模块中的资源组在这个模块中引用。这样，我在一个地方定义并在根和其他模块示例、计算、应用程序服务、aks 等中使用它
main.tf
# Reference existing Virtual Network
data "azurerm_virtual_network" "tf-vn" {
name = var.vnet_name
resource_group_name = module.resource_groups.external_rg_name
}
# Reference existing subnet
data "azurerm_subnet" "tf-sn" {
name = var.subnet_name
virtual_network_name = data.azurerm_virtual_network.tf-vn.name
resource_group_name = module.resource_groups.external_rg_name
}
variables.tf
# Declare env variable
variable "vnet_name" {
type = string
}
variable "subnet_name" {
type = string
}
计算模块。
目的：定义计算（VM）的所有属性。这个想法是，根模块将使用这个模块来启动不同的 VM 角色。
main.tf
module "vm_iis" {
source = "Azure/compute/azurerm"
location = data.resourcegroup.tf-rg-external.location
vnet_subnet_id = data.network.tf-sn.id
admin_password = var.admin_password
data_sa_type = var.data_sa_type
delete_os_disk_on_termination = var.delete_os_disk_on_termination
nb_instances = var.nb_instances
nb_public_ip = var.nb_public_ip
public_ip_address_allocation = var.public_ip_address_allocation
resource_group_name = data.resourcegroup.tf-rg-external.name
.
.
.
}
variables.tf
variable "admin_password" {
type = string
}
variable "admin_username" {
type = string
}
variable "boot_diagnostics" {
type = bool
}
variable "boot_diagnostics_sa_type" {
type = string
}...
terraform 根模块。
目的：这应该利用定义的模块来创建各种不同大小和主机名的虚拟机
main.tf:
module "sql_vm" {
source = "./modules/compute/"
#location = data.resourcegroup.tf-rg-external.location
#vnet_subnet_id = data.network.tf-sn.id
public_ip_address_allocation = var.public_ip_address_allocation
#resource_group_name = data.resourcegroup.tf-rg-external.name
storage_account_type = var.storage_account_type
vm_hostname = var.vm_hostname
}
variables.tf: 声明 main.tf 文件中的所有变量。
注意：我有意在根模块 main/variable 文件中对变量进行硬编码。这只是让模块之间的通信正确。理解和使用模块的正确方法。
然而，当我 运行 terraform 在根模块中规划时。我收到以下错误：
Error: Reference to undeclared resource
on modules/compute/main.tf line 3, in module "vm_iis":
3: location = data.resourcegroup.tf-rg-external.location
A data resource "resourcegroup" "tf-rg-external" has not been declared in
sql_vm.
Error: Reference to undeclared resource
on modules/compute/main.tf line 4, in module "vm_iis":
4: vnet_subnet_id = data.network.tf-sn.id
A data resource "network" "tf-sn" has not been declared in sql_vm.
Error: Reference to undeclared resource
on modules/compute/main.tf line 22, in module "vm_iis":
22: resource_group_name = data.resourcegroup.tf-rg-external.name
A data resource "resourcegroup" "tf-rg-external" has not been declared in
sql_vm.
问题是什么以及如何解决？
此外，是否可以通过某些循环创建不同的（角色）虚拟机？例如 sql-vm、iis-vm、testvm、abcvm？将要改变的是它们的主机名和虚拟机大小。
==========
Post 答案更改
==========
我更新了子网、资源组和位置的值 compute/main.tf 和 terraform/main.tf 如下所示：
location = module.resourcegroup.tf-rg-external-location
vnet_subnet_id = module.network.subnet-id
resource_group_name = module.resourcegroup.tf-rg-external-name
我的 outputs.tf 文件在 resourcegroup 和 network 模块中如下所示:
outputs.tf 网络 模块
output "subnet-id" {
value = "data.network.tf-sn.id"
}
outputs.tf 资源组 模块
output "tf-rg-external-location" {
value = data.resourcegroup.tf-rg-external.location
}
output "tf-rg-external-name" {
value = data.resourcegroup.tf-rg-external.name
}
不幸的是，我仍然遇到如下错误
Error: Unsupported argument
on main.tf line 3, in module "sql_vm":
3: location = module.resourcegroup.tf-rg-external-location
An argument named "location" is not expected here.
Error: Unsupported argument
on main.tf line 4, in module "sql_vm":
4: vnet_subnet_id = module.network.subnet-id
An argument named "vnet_subnet_id" is not expected here.
Error: Unsupported argument
on main.tf line 5, in module "sql_vm":
5: resource_group_name = module.resourcegroup.tf-rg-external-name
An argument named "resource_group_name" is not expected here.
那么，看来我们不应该在根模块中引用它们？
此外，它们的变量应该在根模块 variables.tf 文件中定义，因为我相信您可以覆盖根模块中模块变量的值？
如果我显得很愚蠢，请原谅我。我正在尝试了解它在现实生活中的运作方式。
上次提交和 public 回购后，错误如下
Error: Reference to undeclared module
on main.tf line 3, in module "sql_vm":
3: location = module.resourcegroup.tf-rg-external-location
No module call named "resourcegroup" is declared in the root module.
Error: Reference to undeclared module
on main.tf line 4, in module "sql_vm":
4: vnet_subnet_id = module.network.subnet-id
No module call named "network" is declared in the root module.
Error: Reference to undeclared module
on main.tf line 5, in module "sql_vm":
5: resource_group_name = module.resourcegroup.tf-rg-external-name
No module call named "resourcegroup" is declared in the root module.
Error: Reference to undeclared module
on modules/compute/main.tf line 3, in module "vm_iis":
3: location = module.resourcegroup.tf-rg-external-location
No module call named "resourcegroup" is declared in sql_vm.
Error: Reference to undeclared module
on modules/compute/main.tf line 4, in module "vm_iis":
4: vnet_subnet_id = module.network.subnet-id
No module call named "network" is declared in sql_vm.
Error: Reference to undeclared module
on modules/compute/main.tf line 5, in module "vm_iis":
5: resource_group_name = module.resourcegroup.tf-rg-external-name
No module call named "resourcegroup" is declared in sql_vm.
Error: Reference to undeclared module
on modules/network/main.tf line 5, in data "azurerm_virtual_network" "tf-vn":
5: resource_group_name = module.resource_groups.external_rg_name
No module call named "resource_groups" is declared in test2.
Error: Reference to undeclared resource
on modules/resourcegroup/outputs.tf line 2, in output "tf-rg-external-location":
2: value = data.resourcegroup.tf-rg-external.location
A data resource "resourcegroup" "tf-rg-external" has not been declared in
test1.
Error: Reference to undeclared resource
on modules/resourcegroup/outputs.tf line 5, in output "tf-rg-external-name":
5: value = data.resourcegroup.tf-rg-external.name
A data resource "resourcegroup" "tf-rg-external" has not been declared in
test1.
浏览您正在处理的存储库 (https://github.com/ameyaagashe/help_me_cross/tree/d7485d2a3db339723e9c791e592b2f1dbc1f0788)。现在对我来说很有意义。
问题是，您将如何使用 public 模块的想法与您自己创建的模块混为一谈。
事实上，您不需要设置任何模块来引用其他 public terraform 注册表模块。
将子模块 (module/compute、module/network、module/resourcegroup) 中的所有代码移动到顶级文件夹 (<repo_root>/main.tf)。
如（代码未经验证，仅供参考）
data "azurerm_resource_group" "tf-rg-external" {
name = var.rg_name
}
data "azurerm_virtual_network" "tf-vn" {
name = var.vnet_name
resource_group_name = var.rg_name
}
# Reference existing subnet
data "azurerm_subnet" "tf-sn" {
name = var.subnet_name
virtual_network_name = data.azurerm_virtual_network.tf-vn.name
resource_group_name = var.rg_name
}
module "sql_vm" {
source = "Azure/compute/azurerm"
location = data.azurerm_resource_group.tf-rg-external.location
vnet_subnet_id = data.azurerm_virtual_network.tf-vn.subnets
resource_group_name = data.azurerm_resource_group.tf-rg-external.name
admin_password = var.admin_password
admin_username = var.admin_username
boot_diagnostics = var.boot_diagnostics
boot_diagnostics_sa_type = var.boot_diagnostics_sa_type
data_disk = var.data_disk
data_disk_size_gb = var.data_disk_size_gb
data_sa_type = var.data_sa_type
delete_os_disk_on_termination = var.delete_os_disk_on_termination
enable_accelerated_networking = var.enable_accelerated_networking
# flag is_windows_image is required only when you use a custom image to spin up a VM
# is_windows_image
# flag vm_os_id is required only when you are using custom image
# you need to provide id of your custom image
# vm_os_id
nb_instances = var.nb_instances
nb_public_ip = var.nb_public_ip
public_ip_address_allocation = var.public_ip_address_allocation
storage_account_type = var.storage_account_type
vm_hostname = var.vm_hostname
vm_os_offer = var.vm_os_offer
vm_os_publisher = var.vm_os_publisher
# vm_os_simple is to be used is you do not wish to specify offer, publisher and sku
# vm_os_simple = UbuntuServer, WindowsServer, RHEL, openSUSE-Leap, CentOS, Debian, CoreOS and SLES
vm_os_sku = var.vm_os_sku
vm_os_version = var.vm_os_version
vm_size = var.vm_size
}