如何在Terraform模块中指定使用jfrog/artifactory提供商

我需要创建一个关联Artifactory提供商的Terraform模块。根目录的config.tf已配置了AWS和Artifactory提供商，内容如下：

terraform {
  required_version = "~> 1.2.4"
    
  required_providers {
    aws = {
      version = "4.64.0"
      source  = "hashicorp/aws"
    }
    artifactory = {
      version = "6.22.3"
      source  = "registry.terraform.io/jfrog/artifactory"
    }
  }
}
    
// ARTIFACTORY // 
    
provider "artifactory" {
  url           = "<my artifactory url>"
  access_token  = "<my token>"
}
    
// AWS // 
   
provider "aws" {
  region              = var.region
  allowed_account_ids = [var.account_id]
  assume_role {
    role_arn = var.terraform_role_arn
  }
}

在main.tf中调用Artifactory模块时：

module "artifactory_resources" {
  source     = "./modules/artifactory_resources"
  provider = artifactory
}
    
module "model_store_s3" {
  source     = "./modules/storage/s3"
  aws_region = local.aws_region
}

出现以下错误：

Could not retrieve the list of available versions for provider hashicorp/artifactory: provider registry registry.terraform.io does not have a provider named registry.terraform.io/hashicorp/artifactory

Did you intend to use jfrog/artifactory? If so, you must specify that source address in each module which requires that provider. To see which modules are currently depending on hashicorp/artifactory, run the following command: terraform providers

执行terraform providers后，发现子模块依赖了不存在的提供商：

Providers required by configuration:
.
├── provider[registry.terraform.io/jfrog/artifactory] 6.22.3
├── provider[registry.terraform.io/hashicorp/aws] 4.64.0
├── module.model_store_s3
│	└── provider[registry.terraform.io/hashicorp/aws]
├── module.artifactory_resources
│	├── provider[registry.terraform.io/hashicorp/local]
│	└── provider[registry.terraform.io/hashicorp/artifactory]

如何将模块使用的提供商从provider[registry.terraform.io/hashicorp/artifactory]改为registry.terraform.io/jfrog/artifactory？

解决这个问题的核心是让子模块明确指定Artifactory提供商的源地址，具体步骤如下：

1. 在子模块中添加提供商声明
   进入./modules/artifactory_resources目录，创建或修改providers.tf（或直接在模块的main.tf开头），添加terraform块的required_providers配置，指定Artifactory提供商的源和版本，和根模块保持一致：

   terraform {
     required_providers {
       artifactory = {
         version = "6.22.3"
         source  = "registry.terraform.io/jfrog/artifactory"
       }
       # 如果模块用到了local提供商，也可以在这里声明，保持版本一致
       local = {
         version = "~> 2.4.0" # 根据实际使用版本调整
         source  = "hashicorp/local"
       }
     }
   }
   

2. 验证提供商依赖
   回到根目录，执行terraform providers，此时应该看到module.artifactory_resources依赖的是registry.terraform.io/jfrog/artifactory，而非hashicorp的版本。

3. 重新初始化Terraform
   执行terraform init -upgrade，让Terraform重新拉取正确的提供商版本，确保配置生效。

内容的提问来源于stack exchange，提问作者Sam Comber