从 Terraform local-exec 配置程序运行 python 脚本

Question

版本

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• VS代码：v1.74.3
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• Python：v3.9.1
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• 地形 v1.3.6
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设置

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我有以下文件夹结构

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.\n\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 main.tf\n\xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 scripts\n    \xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 my_script.py\n

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主要.tf：

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locals {\n  python = (substr(pathexpand("~"), 0, 1) == "/") ? "python3" : "python.exe"\n}\n\nresource "null_resource" "custom_objects" {\n  for_each = local.custom_objects\n\n  triggers = {\n    name        = each.key\n  }\n\n  provisioner "local-exec" {\n    command = <<-EOT\n      python3 -m my_script \'{"key_1": "value_1"}\'\n    EOT\n    interpreter = [\n      local.python\n    ]\n    working_dir = "${path.module}/scripts"\n  }\n}\n

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./scripts/my_script.py：

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if __name__ == \'__main__\':\n    print(\'my_script executed.\')\n

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问题\n当我运行时terraform plan/apply，出现以下错误：

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运行命令 \'python3 -m my_script \'{"key_1": "value_1"}\'\n\xe2\x94\x82 \' 时出错：退出状态 2。输出：/home_path/.pyenv/versions/3.9.1 /bin/python3: 无法打开文件 \'/path_to_repo/scripts/python3 -m my_script \'{"key_1": "value_1"}\'\n\xe2\x94\x82 \': [Errno 2]没有这样的文件或目录

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疑问

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• 鉴于错误消息显示了脚本的绝对路径，为什么 local-exec 配置程序无法找到我的脚本？
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• 应该如何配置才能从 local-exec 配置程序将 python 脚本作为模块执行？
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Answer 1

看来当interpreter提供参数时，它会附加到 中定义的路径working_dir，这解释了此错误：

'/path_to_repo/scripts/python3 -m my_script '{"key_1": "value_1"}'

正如您所看到的，路径的结尾python3可能不存在。

我设法使用以下语法获得结果：

resource "null_resource" "custom_objects" {
  for_each = local.custom_objects

  triggers = {
     name = each.key
  }

  provisioner "local-exec" {
    command = <<-EOT
      ${local.python} -m my_script '{"key_1": "value_1"}'
    EOT
    working_dir = "${path.module}/scripts" # works with ${path.root} as well
  }
}

您可能还会发现terraform_data它是null_resource.