AWS SAM CLI 抛出错误：构建 docker 图像时出错

Question

我正在尝试在我的 M1 Mac 上使用 SAM CLI。

我遵循了这些文档中概述的步骤：

sam init
cd sam-app
sam build
sam deploy --guided

我没有修改代码或 yaml 文件。 我可以按预期启动本地 Lambda function：

➜  sam-app sam local start-api
Mounting HelloWorldFunction at http://127.0.0.1:3000/hello [GET]
You can now browse to the above endpoints to invoke your functions. You do not need to restart/reload SAM CLI while working on your functions, changes will be reflected instantly/automatically. If you used sam build before running local commands, you will need to re-run sam build for the changes to be picked up. You only need to restart SAM CLI if you update your AWS SAM template
2023-01-23 17:54:06  * Running on http://127.0.0.1:3000/ (Press CTRL+C to quit)

但是，一旦我通过以下方式到达终点：

curl http://localhost:3000/hello

Lambda RIE 开始抛出错误并返回 502。

Invoking app.lambda_handler (python3.9)
Image was not found.
Removing rapid images for repo public.ecr.aws/sam/emulation-python3.9
Building image...................
Failed to build Docker Image
NoneType: None
Exception on /hello [GET]
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/flask/app.py", line 2073, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/flask/app.py", line 1518, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/flask/app.py", line 1516, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/flask/app.py", line 1502, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/apigw/local_apigw_service.py", line 361, in _request_handler
    self.lambda_runner.invoke(route.function_name, event, stdout=stdout_stream_writer, stderr=self.stderr)
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/commands/local/lib/local_lambda.py", line 137, in invoke
    self.local_runtime.invoke(
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/lib/telemetry/metric.py", line 315, in wrapped_func
    return_value = func(*args, **kwargs)
                   ^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/lambdafn/runtime.py", line 177, in invoke
    container = self.create(function_config, debug_context, container_host, container_host_interface)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/lambdafn/runtime.py", line 73, in create
    container = LambdaContainer(
                ^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/docker/lambda_container.py", line 93, in __init__
    image = LambdaContainer._get_image(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/docker/lambda_container.py", line 236, in _get_image
    return lambda_image.build(runtime, packagetype, image, layers, architecture, function_name=function_name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/docker/lambda_image.py", line 164, in build
    self._build_image(
  File "/opt/homebrew/Cellar/aws-sam-cli/1.70.0/libexec/lib/python3.11/site-packages/samcli/local/docker/lambda_image.py", line 279, in _build_image
    raise ImageBuildException("Error building docker image: {}".format(log["error"]))
samcli.commands.local.cli_common.user_exceptions.ImageBuildException: Error building docker image: The command '/bin/sh -c mv /var/rapid/aws-lambda-rie-x86_64 /var/rapid/aws-lambda-rie && chmod +x /var/rapid/aws-lambda-rie' returned a non-zero code: 1

我发现了这个Github 问题，其中有人建议执行以下操作：

 docker run --rm --privileged multiarch/qemu-user-static --reset -p yes

但没有结果。

有谁知道我做错了什么，或者如何解决这个问题，以便 docker 容器可以正确构建？ 谢谢。

Answer 1

在您的 template.yaml 中，将以下行从

  Architectures:
    - x86_64

到

  Architectures:
    - arm64

这样做的原因是sam init默认为 x86_64 架构。 由于您有一台 M1 Mac，使用 Docker 的 arm64 架构图像性能会更好。 您也可以通过查看提到aws-lambda-rie-x86_64的错误消息来判断情况是否如此。 对于 M1 Mac，您将需要aws-lambda-rie-arm64 ，它会在您更改上面的行并重新运行您的 sam 命令后找到。

或者，如果你想从头开始，你可以传递-a参数来指定架构，如下所示：

sam init -a arm64

这也将解决您的问题。

请注意，这将产生副作用，即使用 Graviton 处理器将 Lambda function 部署到 AWS 中的 arm64 上。 如果您不想那样，您可以在https://github.com/aws/aws-sam-cli/issues/3891中尝试其他解决方法