Terragrunt不会从导入的源获得输出

Question

我一直在跟踪terragrunt文档，最后得到了如下结构：

• services/lb
• services/backend
• vpc

我在services/lb和services/后端中设置了vpc的依赖项，它独立工作，使terragrunt运行--都适用。

然后，我尝试将此配置转移到https://terragrunt.gruntwork.io/docs/getting-started/quick-start/#promote-immutable-versioned-terraform-modules-across-environments之后的基础设施模块，并创建一个具有不同阶段的新存储库：

• prod
• stage
• ...

我了解到(如果我没有遗漏任何东西)，在导入源时，会忽略该源的terragrunt.hcl依赖项配置。

samuel@angel:~/Documents/infrastructure-live/prod$ terragrunt_linux_amd64 run-all apply                                                            
INFO[0000] Stack at /home/samuel/Documents/infrastructure-live/prod:                                                                               
  => Module /home/samuel/Documents/infrastructure-live/prod (excluded: false, dependencies: [])                                                    
  => Module /home/samuel/Documents/infrastructure-live/prod/services/backend (excluded: false, dependencies: [])                                   
  => Module /home/samuel/Documents/infrastructure-live/prod/services/lb (excluded: false, dependencies: [])                                        
  => Module /home/samuel/Documents/infrastructure-live/prod/vpc (excluded: false, dependencies: [])                                                
Are you sure you want to run 'terragrunt apply' in each folder of the stack described above? (y/n) y  

因此，我在我的基础设施中添加了显式依赖配置--活的terragrunt模块：

基础设施-live/prod/vpc/terragrunt.hcl

include {
  path = find_in_parent_folders()
}
terraform {
  extra_arguments "common_vars" {
    commands = get_terraform_commands_that_need_vars()

    arguments = [
      "-var-file=../network.tfvars",
      "-var-file=../region.tfvars"
    ]
  }

  
  source = "git::git@gitlab.com:project/infrastructure-modules.git//vpc"

}

infrastructure-live/prod/backend/terragrunt.hcl

terraform {
  source = "git::git@gitlab.com:project/infrastructure-modules.git//services/backend"
}

include {
  path = find_in_parent_folders()
}

dependency "vpc" {
  config_path = "../../vpc"
}

inputs = {
  backend_vpc_id = dependency.vpc.outputs.backend_vpc_id
}

shell中的依赖信息：

INFO[0000] Stack at /home/samuel/Documents/infrastructure-live/prod:
  => Module /home/samuel/Documents/infrastructure-live/prod (excluded: false, dependencies: [])
  => Module /home/samuel/Documents/infrastructure-live/prod/services/backend (excluded: false, dependencies: [/home/samuel/Documents/infrastructure-live/prod/vpc])
  => Module /home/samuel/Documents/infrastructure-live/prod/services/lb (excluded: false, dependencies: [/home/samuel/Documents/infrastructure-live/prod/vpc, /home/samuel/Documents/infrastructure-live/prod/services/backend])
  => Module /home/samuel/Documents/infrastructure-live/prod/vpc (excluded: false, dependencies: []) 

但是现在它说依赖项没有输出。但它们是导入源模块中的输出！

ERRO[0061] Module /home/samuel/Documents/infrastructure-live/prod/services/backend has finished with an error: /home/samuel/Documents/infrastructure-live/prod/vpc/terragrunt.hcl is a dependency of /home/samuel/Documents/infrastructure-live/prod/services/backend/terragrunt.hcl but detected no outputs. Either the target module has not been applied yet, or the module has no outputs. If this is expected, set the skip_outputs flag to true on the dependency block.  prefix=[/home/samuel/Documents/infrastructure-live/prod/services/backend]ERRO[0061] Dependency /home/samuel/Documents/infrastructure-live/prod/services/backend of module /home/samuel/Documents/infrastructure-live/prod/services/lb just finished with an error. Module /home/samuel/Documents/infrastructure-live/prod/services/lb will have to return an error too.  prefix=[/home/samuel/Documents/infrastructure-live/prod/services/lb]                                                                                               
ERRO[0061] Module /home/samuel/Documents/infrastructure-live/prod/services/lb has finished with an error: Cannot process module Module /home/samuel/Documents/infrastructure-live/prod/services/lb (excluded: false, dependencies: [/home/samuel/Documents/infrastructure-live/prod/vpc, /home/samuel/Documents/infrastructure-live/prod/services/backend]) because one of its dependencies, Module /home/samuel/Documents/infrastructure-live/prod/services/backend (excluded: false, dependencies: [/home/samuel/Documents/infrastructure-live/prod/vpc]), finished with an error: /home/samuel/Documents/infrastructure-live/prod/vpc/terragrunt.hcl is a dependency of /home/samuel/Documents/infrastructure-live/prod/services/backend/terragrunt.hcl but detected no outputs. Either the target module has not been applied yet, or the module has no outputs. If this is expected, set the skip_outputs flag to true on the dependency block.  prefix=[/home/samuel/Documents/infrastructure-live/prod/services/lb]ERRO[0061] Encountered the following errors:Cannot process module Module /home/samuel/Documents/infrastructure-live/prod/services/lb (excluded: false, dependencies: [/home/samuel/Documents/infrastructure-live/prod/vpc, /home/samuel/Documents/infrastructure-live/prod/services/backend]) because one of its dependencies, Module /home/samuel/Documents/infrastructure-live/prod/services/backend (excluded: false, dependencies: [/home/samuel/Documents/infrastructure-live/prod/vpc]), finished with anerror: /home/samuel/Documents/infrastructure-live/prod/vpc/terragrunt.hcl is a dependency of /home/samuel/Documents/infrastructure-live/prod/services/backend/terragrunt.hcl but detected no outputs. Either the target module has not been applied yet, or the module has no outputs. If this is expected, set the skip_outputs flag to true on the dependency block.                                                                                             
/home/samuel/Documents/infrastructure-live/prod/vpc/terragrunt.hcl is a dependency of /home/samuel/Documents/infrastructure-live/prod/services/backend/terragrunt.hcl but detected no outputs. Either the target module has not been applied yet, or the module has no outputs. If this is expected, set the skip_outputs flag to true on the dependency block.                                                                                                    ERRO[0061] Unable to determine underlying exit code, so Terragrunt will exit with error code 1

这是用于VPC的terragrunt缓存。我们可以看到outputs.tf的存在，因此vpc具有输出。

​

​

outputs.tf含量

output "backend_vpc_id" {
    value = digitalocean_vpc.backend_vpc.id
    description = "Backend VPC ID"
}

我错过了什么？我要怎么做才能访问输入源的输出？

非常感谢你的帮助。

Answer 1

您应该使用以下依赖项：

dependency "vpc" {
  config_path = find_in_parent_folders("vpc")
}

看起来你的vpc的路径是错误的，所以terragrunt没有检测到输出。

Answer 2

对于那些仍在遭受此问题困扰的人，您也可以尝试在依赖项中添加一个mock_outputs，并查看它是否有效：

dependency "vpc" {
  config_path = find_in_parent_folders("vpc")

  mock_outputs = {
    vpc_id      = "temp-id"
  }
}

inputs = {
  vpc_id = dependency.vpc.outputs.vpc_id
}

https://terragrunt.gruntwork.io/docs/features/execute-terraform-commands-on-multiple-modules-at-once/#unapplied-dependency-and-mock-outputs

Answer 3

当我们把资源输入地球时，我们也遇到了同样的问题。显然，在依赖路径中运行terragrunt state pull时，我们发现"outputs“对象在状态中为空。还可以通过运行terragrunt output来检查这一点。运行terragrunt refresh解决了这个问题！