Expected Behaviour
I'm trying to iterate through var.vm_settings but doesn't seem to cooperate. The error doesn't make sense because the required type for the input variable is "string"
Actual Behaviour
throws error (see Error output)
Error Output
Error: Error in function call
on ..\main.tf line 4, in locals:
4: vm_settings = zipmap(keys(var.vm_settings), [for vm_setting in values(var.vm_settings) : merge(var.vm_defaults, vm_setting)])
|----------------
| var.vm_defaults is object with 12 attributes
Call to function "merge" failed: arguments must be maps or objects, got
"string".
Terraform (and AzureRM Provider) Version
Affected Resource(s)
azurerm_v2.25.0terraform v0.13.0
Terraform Configuration Files
Main.tf
locals {
vm_settings = zipmap(keys(var.vm_settings), [for vm_setting in values(var.vm_settings) : merge(var.vm_defaults, vm_setting)])
}
resource "azurerm_linux_virtual_machine" "oracle_db" {
for_each = local.vm_settings
name = each.key
resource_group_name = var.resource_group_name
location = var.location
size = each.value.size
admin_username = each.value.admin_username
admin_password = local.admin_password
disable_password_authentication = each.value.disable_password_authentication
priority = each.value.priority
eviction_policy = each.value.eviction_policy
zone = each.value.zone
network_interface_ids = [azurerm_network_interface.nic.id, ]
admin_ssh_key {
username = each.value.admin_ssh_key.username
public_key = each.value.admin_ssh_key.public_key
}
identity {
type = each.value.identity.type
}
os_disk {
caching = each.value.os_disk.caching
storage_account_type = each.value.os_disk.storage_account_type
}
source_image_reference {
publisher = each.value.source_image_reference.publisher
offer = each.value.source_image_reference.offer
sku = each.value.source_image_reference.sku
version = each.value.source_image_reference.version
}
boot_diagnostics {
storage_account_uri = each.value.boot_diagnostics.storage_account_uri
}
}
Variables.tf
variable "vm_settings" {
description = "Map of vm's to create (keys are vm names). Allowed values are the same as for vm_defaults."
type = any
default = {}
}
variable "vm_defaults" {
type = object({
name = string
size = string
admin_username = string
admin_password = string
disable_password_authentication = string
priority = string
eviction_policy = string
identity = object({
type = string
})
admin_ssh_key = object({
username = string
public_key = string
})
os_disk = object({
name = string
caching = string
storage_account_type = string
})
source_image_reference = object({
publisher = string
offer = string
sku = string
version = string
})
boot_diagnostics = object({
storage_account_uri = string
})
})
default = {
name = null
size = null
admin_username = null
admin_password = ""
disable_password_authentication = null
priority = null
eviction_policy = null
identity = {
type = null
}
admin_ssh_key = {
username = ""
public_key = null
}
os_disk = {
name = null
caching = null
storage_account_type = null
}
# Image used to create the virtual machines.
source_image_reference = {
publisher = ""
offer = ""
sku = ""
version = ""
}
boot_diagnostics = {
storage_account_uri = ""
}
}
description = <<EOT
virtual machine default settings (only applied to virtual machine settings managed within this module)
vm_settings = {
size = (Required) The SKU which should be used for this Virtual Machine, such as Standard_F2.
admin_username = (Required) The username of the local administrator used for the Virtual Machine. Changing this forces a new resource to be created.ring
admin_password = (Optional) The Password which should be used for the local-administrator on this Virtual Machine. Changing this forces a new resource to be created.
disable_password_authentication = (Optional) Should Password Authentication be disabled on this Virtual Machine? Defaults to true. Changing this forces a new resource to be created.
# Spot VM to save money
priority = (Optional) Specifies the priority of this Virtual Machine. Possible values are Regular and Spot. Defaults to Regular. Changing this forces a new resource to be created.
eviction_policy = (Optional) Specifies what should happen when the Virtual Machine is evicted for price reasons when using a Spot instance. At this time the only supported value is Deallocate. Changing this forces a new resource to be created. This can only be configured when priority is set to Spot.
# type of Managed Identity which should be assigned to the Linux Virtual Machine
identity = {
type = (Required) The type of Managed Identity which should be assigned to the Linux Virtual Machine. Possible values are SystemAssigned, UserAssigned and SystemAssigned, UserAssigned.
}
# SSH key
admin_ssh_key = {
username = (Required) The Public Key which should be used for authentication, which needs to be at least 2048-bit and in ssh-rsa format. Changing this forces a new resource to be created.
public_key = (Required) The Username for which this Public SSH Key should be configured. Changing this forces a new resource to be created.
}
# Internal OS disk
os_disk = {
name = (Required) The Type of Caching which should be used for the Internal OS Disk. Possible values are None, ReadOnly and ReadWrite.
caching = (Required) The Type of Caching which should be used for the Internal OS Disk. Possible values are None, ReadOnly and ReadWrite.
storage_account_type = (Required) The Type of Storage Account which should back this the Internal OS Disk. Possible values are Standard_LRS, StandardSSD_LRS and Premium_LRS. Changing this forces a new resource to be created.
}
# Image used to create the virtual machines.
source_image_reference = {
publisher = (Optional) Specifies the publisher of the image used to create the virtual machines.
offer = (Optional) Specifies the offer of the image used to create the virtual machines.
sku = (Optional) Specifies the SKU of the image used to create the virtual machines.
version = (Optional) Specifies the version of the image used to create the virtual machines.
}
boot_diagnostics = {
storage_account_uri = (Optional) The Primary/Secondary Endpoint for the Azure Storage Account which should be used to store Boot Diagnostics, including Console Output and Screenshots from the Hypervisor. Passing a null value will utilize a Managed Storage Account to store Boot Diagnostics.
}
}
EOT
}
