Cannot override provider configuration error in installing DC/OS via Terraform on azure

Question

Working on setting up DC/OS on Microsoft Azure using Terraform. I'm using the main.tf provided in the official documentation. Every time I run terraform init I get an error:

Error: Cannot override provider configuration │ │ on .terraform/modules/dcos/main.tf line 138, in module "dcos-infrastructure": │ 138: azurerm = azurerm

I have authenticated via az CLI specifically via the command az login --use-device-code

My terraform version is: Terraform v1.1.9 on linux_amd64

How can I resolve this? my attempts to comment out the providers still produces this error.

Answer 1

If you are using module in you main.tf file, You have to use `Provider Aliases in main file

To declare multiple configuration names for a provider within a module, add the configuration_aliases argument:

You can take reference of this aws and edit it for azure accordignly.

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = ">= 2.7.0"
      configuration_aliases = [ aws.alternate ]
    }
  }
}

Passing Providers Explicitly

main.tf

provider "aws" {
  alias  = "usw2"
  region = "us-west-2"
}

# An example child module is instantiated with the alternate configuration,
# so any AWS resources it defines will use the us-west-2 region.
module "example" {
  source    = "./example"
  providers = {
    aws.alternate = aws.usw2
  }
}

You can refer this document for information, How to use provider when using module in main.tf