Terraform resource group deployment in multiple subscriptions

Question

I am trying to use Terraform and Terragrunt to create a bunch of different resources in Azure. Amongst others, I am deploying subscriptions and resource groups.

I have one central variable file that contains some metadata, and deploys resources based on that. I can deploy all the subscriptions that I want, but I have an issue because I want to deploy resource groups within those subscriptions, and I am not sure how to do it the best way, since the resource group resource doesn't have a subscription parameter.

Variable file looks something like:

inputs = {

    departments = [
    {
        name = "test",
        region = "West Europe"
        email = "[email protected]"

    },
    {
        name = "test2"
        region = "West Europe"
        email = "[email protected]"
    }
]

}

So in my resource group module I have defined it like this:

resource "azurerm_resource_group" "example" {
for_each = {for dep in var.departments: dep.name => dep}

  name     = "rg-${each.value.name}"
  location = "${each.value.region}"
}

And that is ok, but I need to switch context to the correct subscriptions, so the resource groups are being placed in the proper subs. Any ideas?

Any updates on this question? Does it solve your problem? Please let me know if you have any responses. — Charles Xu

Charles Xu Charles Xu · Accepted Answer · 2021-06-03T01:07:42

To deploy resources in multiple subscriptions, you can use multiple providers, here you can get more details and the example code below:

provider "azurerm" {
    subscription_id = "xxxxxx"
    tenant_id = "xxxxxx"
    client_id = "xxxxxx"
    client_secret = "xxxxxx"
}

provider "azurerm" {
    alias = sub2
    subscription_id = "xxxxxx"
    tenant_id = "xxxxxx"
    client_id = "xxxxxx"
    client_secret = "xxxxxx"
}

resource "azurerm_resource_group" "example1" {
    provider = azurerm
    ...
}

resource "azurerm_resource_group" "example1" {
    provider = azurerm.sub2
    ...
}

And if you use the for_each in terraform, you can add the alias option in the input:

inputs = {

    departments = [
      {
        name = "test",
        provider = "azurerm"
        region = "West Europe"
        email = "[email protected]"

      },
      {
        name = "test2"
        provider = "azurerm.sub2"
        region = "West Europe"
        email = "[email protected]"
      }
    ]
}

This is just an example, but it's the workaround. You can change the code as you need.

Terraform resource group deployment in multiple subscriptions

1 Answers