» Azure Provider: Authenticating using the Azure CLI

Terraform supports authenticating to Azure through a Service Principal or the Azure CLI.

We recommend using a Service Principal when running in a shared environment (such as within a CI server/automation) - and authenticating via the Azure CLI when you're running Terraform locally.

When authenticating via the Azure CLI, Terraform will automatically connect to the Default Subscription - this can be changed by using the Azure CLI - and is documented below.

» Configuring the Azure CLI

This guide assumes that you have the Azure CLI 2.0 (Python) installed.

$ az cloud set --name AzureChinaCloud|AzureGermanCloud|AzureUSGovernment

Firstly, login to the Azure CLI using:

$ az login

This will prompt you to open a web browser, as shown below:

To sign in, use a web browser to open the page https://aka.ms/devicelogin and enter the code XXXXXXXX to authenticate.

Once logged in - it's possible to list the Subscriptions associated with the account via:

$ az account list

The output (similar to below) will display one or more Subscriptions - with the id field being the Subscription ID.

    "cloudName": "AzureCloud",
    "id": "00000000-0000-0000-0000-000000000000",
    "isDefault": true,
    "name": "PAYG Subscription",
    "state": "Enabled",
    "tenantId": "00000000-0000-0000-0000-000000000000",
    "user": {
      "name": "user@example.com",
      "type": "user"
$ az account set --subscription="SUBSCRIPTION_ID"

Also, if you have been authenticating with a service principal and you switch to Azure CLI, you must null out the ARM_* environment variables. Failure to do so causes errors to be thrown.