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How do I troubleshoot the "Runtime.InvalidEntrypoint" error for my Lambda function that's from a Docker container image?
When I try to create an AWS Lambda function from a Docker container image, I receive a "Runtime.InvalidEntrypoint" error.
Resolution
When you misconfigured an the entry in the Lambda function, you might receive a "Runtime.InvalidEntrypoint" error.
To resolve this issue, check the following configuration settings for your Lambda function:
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Verify that the ENTRYPOINT and CMD arguments to your Docker container image include the absolute path as the location.
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Make sure that the Docker container image doesn't contain a symbolic link (symlink) as the ENTRYPOINT.
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Make sure that the ENTRYPOINT is correct in the Lambda function's configuration. The ENTRYPOINT must match the command in the container image's Dockerfile that's used for the runtime.
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Verify that the Docker container image pushes to the correct Amazon Elastic Container Registry (Amazon ECR).
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Make sure that the Docker image's architecture and the Lambda function match. Lambda supports arm64 and x86_64 instruction set architectures. To build the container image, use either the linux/amd64 or linux/arm64 platform.
Example:docker build platform linux/amd64 -t docker-image:test -
Verify that the Lambda deployment package has the correct security permissions. If the package doesn't have the correct permissions, you receive a "permission denied" error with the "Runtime.InvalidEntrypoint" error. For more information, see How do I troubleshoot "permission denied" or "unable to import module" errors when I upload a Lambda deployment package?
Related information
How do I create a Lambda layer using a simulated Lambda environment with Docker?
- Topics
- ServerlessCompute
- Tags
- AWS Lambda
- Language
- English
Recieved the error "rror: fork/exec /lambda-entrypoint.sh: exec format error Runtime.InvalidEntrypoint"
Was able to resolve the error after adding respective architecture tag in docker file for runtime image "public.ecr.aws/lambda/python:3.11-x86_64",
Thank you for your comment. We'll review and update the Knowledge Center article as needed.
@Nikhil Melakunta, thank so much for your solution!
Use the official AWS Lambda Node.js 18 base image
FROM public.ecr.aws/lambda/nodejs:18
Install g++ and other required dependencies
RUN yum update -y &&
yum install -y gcc-c++ make &&
yum clean all &&
rm -rf /var/cache/yum
Copy package files
COPY package*.json ./
Install dependencies
RUN npm install --production
Copy function code
COPY . .
Set the handler
ENTRYPOINT [ "/lambda-entrypoint.sh" ] CMD [ "src/handlers/dsa/run.handler" ]
this is my docker file my handler is at /Users/gouravsingal/Desktop/personal/slazySloth_server/src/handlers/dsa/run.js slazySloth_server is my project name
and I am getting this error
2024-12-07T16:49:33.279Z RequestId: 8e9c3920-cc3a-445e-998c-f0ea1c4d4746 Error: fork/exec /lambda-entrypoint.sh: exec format error Runtime.InvalidEntrypoint
can somebody correct it
I am using the correct image uri
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