While working with Terraform modules I wanted to pass on multiple provider aliases with specific credentials and azure subscription details to child module. Ideas was to create resources with assigned privileged users. Non privileged users should not be able to create services in Azure.
In this step by step guide I defined two provider azurerm blocks, alias information each with dev and prod. For each provider block I have given assigned privileged service principal details as per the environment. Both providers dev and prod information is passed in module block to source path (child module).
# Parent Module defined on the root directory - main.tf provider "azurerm" { features {} alias = "dev" client_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" client_secret = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" subscription_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" tenant_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" } provider "azurerm" { features {} alias = "prod" client_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" client_secret = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" subscription_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" tenant_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" } ######################## variable "sa_info" { type = list(object({ environment = string name = string location = string })) default = [ { environment = "dev" name = "vcloudlabsadev" location = "East US" }, { environment = "prod" name = "vcloudlabsaprod" location = "East US" } ] } ######################## module "storage_account" { source = "./module/storage_account" providers = { azurerm.dev = azurerm.dev azurerm.prod = azurerm.prod } for_each = { for sa in var.sa_info : sa.name => sa } environment = each.value.environment name = each.value.name location = each.value.location resource_group_name = "v${each.value.environment}.vcloud-lab.com" account_tier = "Standard" account_replication_type = "LRS" } ######################## output "id" { value = { for id, sa in module.storage_account : id => flatten(sa[*].sa_info) } } output "only_ids" { value = { for id, sa in module.storage_account : id => flatten([for v in flatten(sa[*].sa_info) : values(v)[0]]) } }
Download this script code Terraform_Module_Pass_Multiple_Credentials_Provider_Alias.zip here or it is also available on github.com.
Next inside the child module, I have mentioned terraform block with configuration_aliases, which has environment details of dev and prod, which is passed by parent module. To use these environments in the resources I mentioned provider for each in resource blocks. It will use to create services resource inside Azure. In the resources block I have added logic for_each to create correct resource with correct credentials in correct subscription/tenant.
# Child Module located ./module/storage_account - main.tf - Storage Account terraform { required_providers { azurerm = { source = "hashicorp/azurerm" version = "~> 3.0" configuration_aliases = [azurerm.dev, azurerm.prod] } } } ########################### variable "name" {} variable "location" {} variable "resource_group_name" {} variable "account_replication_type" {} variable "account_tier" {} variable "environment" {} ########################### resource "azurerm_storage_account" "sa_object_dev" { #count = var.environment == "dev" ? 1 : 0 for_each = var.environment == "dev" ? { "dev" = true } : {} name = var.name location = var.location resource_group_name = var.resource_group_name account_replication_type = var.account_replication_type account_tier = var.account_tier provider = azurerm.dev } resource "azurerm_storage_account" "sa_object_prod" { #count = var.environment == "prod" ? 1 : 0 #for_each = { for env in toset(var.environment) : env => true if env == "prod" } #When variable environment is type is list #for_each = { for env in var.environment : env => true if env == "prod" } #When variable environment is set to set for_each = var.environment == "prod" ? { "prod" = true } : {} name = var.name location = var.location resource_group_name = var.resource_group_name account_replication_type = var.account_replication_type account_tier = var.account_tier provider = azurerm.prod } ########################### output "sa_info" { value = merge( { for name, sa in azurerm_storage_account.sa_object_dev : name => sa.id }, { for name, sa in azurerm_storage_account.sa_object_prod : name => sa.id } ) }
Additionally if you don't have any alias assigned to azurerm provider block you can simply pass inside module using as it is like provider = {azurerm = azurerm}.
Check the related articles:
Terraform Azure provider alias passing credentials and configuration in module resources
Terraform passing different credentials to different subscriptions with provider alias
Below is the information of output after initiating and apply configuration through Terraform module.
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terraform apply --auto-approve Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols: + create Terraform will perform the following actions: # module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"] will be created + resource "azurerm_storage_account" "sa_object_dev" { + access_tier = (known after apply) + account_kind = "StorageV2" + account_replication_type = "LRS" + account_tier = "Standard" + allow_nested_items_to_be_public = true + cross_tenant_replication_enabled = true + default_to_oauth_authentication = false + dns_endpoint_type = "Standard" + enable_https_traffic_only = (known after apply) + https_traffic_only_enabled = (known after apply) + id = (known after apply) + infrastructure_encryption_enabled = false + is_hns_enabled = false + large_file_share_enabled = (known after apply) + local_user_enabled = true + location = "eastus" + min_tls_version = "TLS1_2" + name = "vcloudlabsadev" + nfsv3_enabled = false + primary_access_key = (sensitive value) + primary_blob_connection_string = (sensitive value) + primary_blob_endpoint = (known after apply) + primary_blob_host = (known after apply) + primary_blob_internet_endpoint = (known after apply) + primary_blob_internet_host = (known after apply) + primary_blob_microsoft_endpoint = (known after apply) + primary_blob_microsoft_host = (known after apply) + primary_connection_string = (sensitive value) + primary_dfs_endpoint = (known after apply) + primary_dfs_host = (known after apply) + primary_dfs_internet_endpoint = (known after apply) + primary_dfs_internet_host = (known after apply) + primary_dfs_microsoft_endpoint = (known after apply) + primary_dfs_microsoft_host = (known after apply) + primary_file_endpoint = (known after apply) + primary_file_host = (known after apply) + primary_file_internet_endpoint = (known after apply) + primary_file_internet_host = (known after apply) + primary_file_microsoft_endpoint = (known after apply) + primary_file_microsoft_host = (known after apply) + primary_location = (known after apply) + primary_queue_endpoint = (known after apply) + primary_queue_host = (known after apply) + primary_queue_microsoft_endpoint = (known after apply) + primary_queue_microsoft_host = (known after apply) + primary_table_endpoint = (known after apply) + primary_table_host = (known after apply) + primary_table_microsoft_endpoint = (known after apply) + primary_table_microsoft_host = (known after apply) + primary_web_endpoint = (known after apply) + primary_web_host = (known after apply) + primary_web_internet_endpoint = (known after apply) + primary_web_internet_host = (known after apply) + primary_web_microsoft_endpoint = (known after apply) + primary_web_microsoft_host = (known after apply) + public_network_access_enabled = true + queue_encryption_key_type = "Service" + resource_group_name = "vdev.vcloud-lab.com" + secondary_access_key = (sensitive value) + secondary_blob_connection_string = (sensitive value) + secondary_blob_endpoint = (known after apply) + secondary_blob_host = (known after apply) + secondary_blob_internet_endpoint = (known after apply) + secondary_blob_internet_host = (known after apply) + secondary_blob_microsoft_endpoint = (known after apply) + secondary_blob_microsoft_host = (known after apply) + secondary_connection_string = (sensitive value) + secondary_dfs_endpoint = (known after apply) + secondary_dfs_host = (known after apply) + secondary_dfs_internet_endpoint = (known after apply) + secondary_dfs_internet_host = (known after apply) + secondary_dfs_microsoft_endpoint = (known after apply) + secondary_dfs_microsoft_host = (known after apply) + secondary_file_endpoint = (known after apply) + secondary_file_host = (known after apply) + secondary_file_internet_endpoint = (known after apply) + secondary_file_internet_host = (known after apply) + secondary_file_microsoft_endpoint = (known after apply) + secondary_file_microsoft_host = (known after apply) + secondary_location = (known after apply) + secondary_queue_endpoint = (known after apply) + secondary_queue_host = (known after apply) + secondary_queue_microsoft_endpoint = (known after apply) + secondary_queue_microsoft_host = (known after apply) + secondary_table_endpoint = (known after apply) + secondary_table_host = (known after apply) + secondary_table_microsoft_endpoint = (known after apply) + secondary_table_microsoft_host = (known after apply) + secondary_web_endpoint = (known after apply) + secondary_web_host = (known after apply) + secondary_web_internet_endpoint = (known after apply) + secondary_web_internet_host = (known after apply) + secondary_web_microsoft_endpoint = (known after apply) + secondary_web_microsoft_host = (known after apply) + sftp_enabled = false + shared_access_key_enabled = true + table_encryption_key_type = "Service" + blob_properties (known after apply) + network_rules (known after apply) + queue_properties (known after apply) + routing (known after apply) + share_properties (known after apply) } # module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"] will be created + resource "azurerm_storage_account" "sa_object_prod" { + access_tier = (known after apply) + account_kind = "StorageV2" + account_replication_type = "LRS" + account_tier = "Standard" + allow_nested_items_to_be_public = true + cross_tenant_replication_enabled = true + default_to_oauth_authentication = false + dns_endpoint_type = "Standard" + enable_https_traffic_only = (known after apply) + https_traffic_only_enabled = (known after apply) + id = (known after apply) + infrastructure_encryption_enabled = false + is_hns_enabled = false + large_file_share_enabled = (known after apply) + local_user_enabled = true + location = "eastus" + min_tls_version = "TLS1_2" + name = "vcloudlabsaprod" + nfsv3_enabled = false + primary_access_key = (sensitive value) + primary_blob_connection_string = (sensitive value) + primary_blob_endpoint = (known after apply) + primary_blob_host = (known after apply) + primary_blob_internet_endpoint = (known after apply) + primary_blob_internet_host = (known after apply) + primary_blob_microsoft_endpoint = (known after apply) + primary_blob_microsoft_host = (known after apply) + primary_connection_string = (sensitive value) + primary_dfs_endpoint = (known after apply) + primary_dfs_host = (known after apply) + primary_dfs_internet_endpoint = (known after apply) + primary_dfs_internet_host = (known after apply) + primary_dfs_microsoft_endpoint = (known after apply) + primary_dfs_microsoft_host = (known after apply) + primary_file_endpoint = (known after apply) + primary_file_host = (known after apply) + primary_file_internet_endpoint = (known after apply) + primary_file_internet_host = (known after apply) + primary_file_microsoft_endpoint = (known after apply) + primary_file_microsoft_host = (known after apply) + primary_location = (known after apply) + primary_queue_endpoint = (known after apply) + primary_queue_host = (known after apply) + primary_queue_microsoft_endpoint = (known after apply) + primary_queue_microsoft_host = (known after apply) + primary_table_endpoint = (known after apply) + primary_table_host = (known after apply) + primary_table_microsoft_endpoint = (known after apply) + primary_table_microsoft_host = (known after apply) + primary_web_endpoint = (known after apply) + primary_web_host = (known after apply) + primary_web_internet_endpoint = (known after apply) + primary_web_internet_host = (known after apply) + primary_web_microsoft_endpoint = (known after apply) + primary_web_microsoft_host = (known after apply) + public_network_access_enabled = true + queue_encryption_key_type = "Service" + resource_group_name = "vprod.vcloud-lab.com" + secondary_access_key = (sensitive value) + secondary_blob_connection_string = (sensitive value) + secondary_blob_endpoint = (known after apply) + secondary_blob_host = (known after apply) + secondary_blob_internet_endpoint = (known after apply) + secondary_blob_internet_host = (known after apply) + secondary_blob_microsoft_endpoint = (known after apply) + secondary_blob_microsoft_host = (known after apply) + secondary_connection_string = (sensitive value) + secondary_dfs_endpoint = (known after apply) + secondary_dfs_host = (known after apply) + secondary_dfs_internet_endpoint = (known after apply) + secondary_dfs_internet_host = (known after apply) + secondary_dfs_microsoft_endpoint = (known after apply) + secondary_dfs_microsoft_host = (known after apply) + secondary_file_endpoint = (known after apply) + secondary_file_host = (known after apply) + secondary_file_internet_endpoint = (known after apply) + secondary_file_internet_host = (known after apply) + secondary_file_microsoft_endpoint = (known after apply) + secondary_file_microsoft_host = (known after apply) + secondary_location = (known after apply) + secondary_queue_endpoint = (known after apply) + secondary_queue_host = (known after apply) + secondary_queue_microsoft_endpoint = (known after apply) + secondary_queue_microsoft_host = (known after apply) + secondary_table_endpoint = (known after apply) + secondary_table_host = (known after apply) + secondary_table_microsoft_endpoint = (known after apply) + secondary_table_microsoft_host = (known after apply) + secondary_web_endpoint = (known after apply) + secondary_web_host = (known after apply) + secondary_web_internet_endpoint = (known after apply) + secondary_web_internet_host = (known after apply) + secondary_web_microsoft_endpoint = (known after apply) + secondary_web_microsoft_host = (known after apply) + sftp_enabled = false + shared_access_key_enabled = true + table_encryption_key_type = "Service" + blob_properties (known after apply) + network_rules (known after apply) + queue_properties (known after apply) + routing (known after apply) + share_properties (known after apply) } Plan: 2 to add, 0 to change, 0 to destroy. Changes to Outputs: + id = [ + { + vcloudlabsadev = { + sa_info = { + dev = (known after apply) } } + vcloudlabsaprod = { + sa_info = { + prod = (known after apply) } } }, ] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Creating... module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Creating... module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [10s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [10s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [20s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [20s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [30s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [30s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [41s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [40s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [51s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [50s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [1m1s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [1m0s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Still creating... [1m11s elapsed] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Still creating... [1m10s elapsed] module.storage_account["vcloudlabsadev"].azurerm_storage_account.sa_object_dev["dev"]: Creation complete after 1m15s [id=/subscriptions/9e22xxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/vdev.vcloud-lab.com/providers/Microsoft.Storage/storageAccounts/vcloudlabsadev] module.storage_account["vcloudlabsaprod"].azurerm_storage_account.sa_object_prod["prod"]: Creation complete after 1m14s [id=/subscriptions/9e22xxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/vprod.vcloud-lab.com/providers/Microsoft.Storage/storageAccounts/vcloudlabsaprod] Apply complete! Resources: 2 added, 0 changed, 0 destroyed. Outputs: id = [ { "vcloudlabsadev" = { "sa_info" = { "dev" = "/subscriptions/9e22xxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/vdev.vcloud-lab.com/providers/Microsoft.Storage/storageAccounts/vcloudlabsadev" } } "vcloudlabsaprod" = { "sa_info" = { "prod" = "/subscriptions/9e22xxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/vprod.vcloud-lab.com/providers/Microsoft.Storage/storageAccounts/vcloudlabsaprod" } } }, ] |
In this demo to the dev and prod Resource Groups I have assigned privileges with different App Registrations users accounts. I see in the activity logs resources are getting created with the correct assigned users.
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