Terraform执行plan/apply遇'missing value for command'错误求解决

问题重现 #

执行terraform apply时触发以下错误，删除.terraform*文件后terraform plan可正常运行，但apply仍报错：

│ Error: template: .terraform/providers/registry.terraform.io/akamai/akamai/6.0.0/darwin_amd64/terraform-provider-akamai_v6.0.0:70761: missing value for command
│
│ with data.akamai_property_rules_template.rules,
│ on akamai.tf line 54, in data "akamai_property_rules_template" "rules":
│ 54: data "akamai_property_rules_template" "rules" {

相关配置：

Terraform数据块 #

data "akamai_property_rules_template" "rules" {
  template_file = abspath("${path.root}/property-rules.json")
  variables {
    name = "directory_name"
    value = var.directory_name
    type = "string"
  }
}

property-rules.json模板 #

{
  "rules": {
    "name": "default",
    "behaviors": [
      {
        "name": "origin",
        "options": {
          "originType": "NET_STORAGE",
          "netStorage": {
            "cpCode": 1111111,
            "downloadDomainName": "testnsx.download.akamai.com",
            "name": "TestNSx",
            "id": 0000000
          }
        }
      },
      {
        "name": "allowPost",
        "options": {
          "allowWithoutContentLength": false,
          "enabled": false
        }
      },
      {
        "name": "caching",
        "options": {
          "behavior": "MAX_AGE"
        }
      }
    ],
    "variables": [
      {
        "name": "PMUSER_DIR",
        "value": "${env.directory_name}",
        "description": "Main content directory",
        "hidden": false,
        "sensitive": false
      },
      {
        "name": "PMUSER_FORCE_HTTPS",
        "value": "Y",
        "description": "Force secure connection",
        "hidden": false,
        "sensitive": false
      }
    ],
    "comments": "The behaviors in the Default Rule apply to all requests for the property hostname(s) unless another rule overrides the Default Rule settings."
  }
}

解决方案 #

1. 修正模板变量引用格式 #

Akamai的property_rules_template数据块使用Go模板语法，而非Shell环境变量格式。将property-rules.json中的${env.directory_name}替换为{{var.directory_name}}：

{
  "name": "PMUSER_DIR",
  "value": "{{var.directory_name}}",
  // 其他内容保持不变
}

2. 确保变量正确传递 #

• 在variables.tf中声明directory_name变量：

variable "directory_name" {
  type        = string
  description = "Main content directory name"
}

• apply时通过命令行或tfvars文件传入变量值：
  • 命令行方式：

    terraform apply -var="directory_name=your-target-directory"
    

  • tfvars文件方式（新建terraform.tfvars）：

    directory_name = "your-target-directory"
    

3. 完全清理Terraform缓存并重新初始化 #

避免旧缓存干扰，执行完整清理流程：

rm -rf .terraform* terraform.tfstate*
terraform init
terraform plan
terraform apply

4. 检查Provider版本兼容性 #

v6.0.0版本的Akamai Provider可能存在模板处理的已知问题，尝试调整版本：
修改versions.tf中的版本约束：

terraform {
  required_providers {
    akamai = {
      source  = "akamai/akamai"
      version = "~> 5.0" # 或最新稳定版
    }
  }
}

然后执行：

terraform init -upgrade

内容的提问来源于stack exchange，提问作者Lizzie