I am trying to use the SAM CLI on my M1 Mac.
I followed the steps outlined in these docs:
sam init
cd sam-app
sam build
sam deploy --guided
I did not modify the code or the yaml files. I can start the local Lambda function as expected:
➜ 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)
But as soon as I hit the endpoint by doing:
curl http://localhost:3000/hello
The Lambda RIE starts throwing errors and returns a 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
I found this Github issue where someone recommended to do the following:
docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
But it yielded no results.
Does anyone know what I'm doing wrong, or how to resolve this issue so the docker container can build correctly? Thanks.
In your template.yaml, change the following lines from
Architectures:
- x86_64
to
Architectures:
- arm64
The reason why this works is that sam init defaults to the x86_64 architecture. Since you have an M1 Mac, performance will be better with a Docker image for the arm64 architecture.
You can tell this is the case as well by looking at the error message which mentions aws-lambda-rie-x86_64. For the M1 Mac, you'll need aws-lambda-rie-arm64 which it will find once you change those lines above and then re-run your sam commands.
Alternatively, if you want to start from scratch you can pass the -a parameter to specify the architecture like so:
sam init -a arm64
and that will fix your problem as well.
Note that this will have a side-effect of deploying your Lambda function onto arm64 in AWS utilizing Graviton processors. If you don't want that, you can look try other workarounds in https://github.com/aws/aws-sam-cli/issues/3891