core.required_provider_must_be_declared¶

Enforce that all providers used in resources or data sources are declared in the terraform.required_providers block.

Why¶

Using non explicitly declared providers usually leads to bugs when trying to apply changes.

Triggers¶

Any resource or data block for which the provider is not declared

Example¶

Bad¶

resource "aws_s3_bucket" "this" {}

Good¶

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
}

resource "aws_s3_bucket" "this" {}

Note that the provider declaration and the resource usage do not need to be in the same file.

Configuration¶

There is currently no configuration flags for that rule, beside the option to enable or disable the rule