SSL Validation Error: SSL validation failed for https://lambda.us-east-1.amazonaws.com/layers/my python layer/version/ EOF occurred in violation of protocol (_ssl.c:2427)

The error message you're encountering, SSL validation failed for https://monitoring.us-east-1.amazonaws.com/ EOF occurred in violation of protocol (_ssl.c:2427), typically indicates an issue with the SSL/TLS handshake while attempting to connect to the AWS service. The EOF occurred in violation of protocol is an SSL/TLS error, and it could arise due to various reasons related to network settings, certificate issues, or outdated SSL/TLS protocols.

Potential Causes and Solutions:

1. Outdated Python or requests Library:

   • Ensure you're using an up-to-date version of Python. Older versions may not support the latest SSL/TLS protocols used by AWS services.

pip install --upgrade requests

2. SSL/TLS Protocol Mismatch:

   • AWS services may require newer versions of SSL/TLS protocols (like TLS 1.2 or 1.3). You may need to ensure that your environment supports these protocols.

   • If you're using an older version of OpenSSL, consider upgrading it. AWS typically supports TLS 1.2 and above.

3. Outdated or Misconfigured CA Certificates:

   • The SSL validation might fail if your machine is not using the proper CA certificates to validate AWS's SSL certificates.

pip install --upgrade certifi

4. Proxy Configuration:

   • If you are behind a proxy, ensure your proxy is not interfering with the SSL handshake. AWS CLI or Python might be affected by this.

unset https\_proxyunset http\_proxy

5. AWS CLI Configuration:

• Ensure your AWS CLI is properly configured. You can reconfigure it by running:

aws configure

• Make sure the correct region is set in the configuration.

6. Check for Service Outages:

   • Sometimes, issues like this can occur due to problems on AWS's side. Check AWS's Service Health Dashboard to verify if there are any ongoing issues with AWS services in your region.

7. Custom Layer Publishing:

• Double-check the command you're using to publish the Lambda layer. For example:

aws lambda publish-layer-version --layer-name my-layer --zip-file fileb://my-layer.zip --compatible-runtimes python3.8

• Ensure the file is correctly packaged and that there are no issues with the contents of the layer.

8. SSL Configuration in Python:

• Some Python versions or environments may have misconfigured SSL settings. You can try forcing Python to use TLS 1.2 or higher explicitly:

import sslssl.\_create\_default\_https\_context = ssl.\_create\_unverified\_context

Additional Debugging:

• Run the AWS CLI with --debug to see more detailed output that might provide insights into what's causing the SSL error:

aws lambda publish-layer-version --layer-name my-layer --zip-file fileb://my-layer.zip --compatible-runtimes python3.8 --debug

This will give you additional context about where the failure happens.

@tanvir, Tried everything still the same error. For the zip file path, I have installed all python libraries in a zip folder and gave that path. Is there anything that I need to modify in order prevent the error.