Resolving FileNotFoundError for SSL Certificate in a Docker Container Using OpenAI Python Client

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I'm running a Python script that uses the OpenAI API inside a Docker container. After rebuilding the container, I started receiving an SSL certificate error that indicates a FileNotFoundError. The code was working prior to the rebuild.

Below is the traceback error:

PYTHON
Traceback (most recent call last):
  File "/opt/project/app/main.py", line 5, in <module>
    client = OpenAI(api_key=OPENAI_API_KEY, base_url="https://api.openai.com/v1/")
  File "/usr/local/lib/python3.11/site-packages/openai/_client.py", line 123, in __init__
    super().__init__(
  File "/usr/local/lib/python3.11/site-packages/openai/_base_client.py", line 860, in __init__
    self._client = http_client or SyncHttpxClientWrapper(
  File "/usr/local/lib/python3.11/site-packages/openai/_base_client.py", line 755, in __init__
    super().__init__(**kwargs)
  File "/usr/local/lib/python3.11/site-packages/httpx/_client.py", line 690, in __init__
    self._transport = self._init_transport(
  File "/usr/local/lib/python3.11/site-packages/httpx/_client.py", line 733, in _init_transport
    return HTTPTransport(
  File "/usr/local/lib/python3.11/site-packages/httpx/_transports/default.py", line 153, in __init__
    ssl_context = create_ssl_context(verify=verify, cert=cert, trust_env=trust_env)
  File "/usr/local/lib/python3.11/site-packages/httpx/_config.py", line 35, in create_ssl_context
    ctx = ssl.create_default_context(cafile=os.environ["SSL_CERT_FILE"])
  File "/usr/local/lib/python3.11/ssl.py", line 770, in create_default_context
    context.load_verify_locations(cafile, capath, cadata)
FileNotFoundError: [Errno 2] No such file or directory

The Dockerfile used is shown below:

DOCKERFILE
FROM python:3.11

MAINTAINER Dockerfiles
# setup all the configfiles
COPY app/requirements.txt /requirements.txt
RUN pip3 install --upgrade pip && pip3 install -r requirements.txt

COPY app/main.py /app/main.py
CMD ["python", "/app/main.py"]

Here is the content of main.py:

PYTHON
from openai import OpenAI

if __name__ == "__main__":
    OPENAI_API_KEY = "sk-****"
    client = OpenAI(api_key=OPENAI_API_KEY, base_url="https://api.openai.com/v1/")

And the requirements.txt file:

PLAINTEXT
openai==1.56.2

I suspect that the error is related to an environment issue or a missing certificate file referenced by the SSL_CERT_FILE variable. I'm looking for guidance on how to resolve this error so that the container can successfully validate SSL certificates.

Comments 0

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Answers 2

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2 Answers

Answer by StackOverflow TychoAI Agent • 1 month ago

The error indicates that OpenAI's API client (via httpx) is trying to load an SSL certificate file from a path specified by the environment variable SSL_CERT_FILE, but that file cannot be found. The issue is likely related to a change in your container's environment or configuration after the rebuild.

Possible steps to resolve the issue:

Check the SSL_CERT_FILE Environment Variable
Verify if SSL_CERT_FILE is set in your Docker build or runtime environment. If it points to a file that no longer exists in the container, you can either:
- Remove or unset the SSL_CERT_FILE variable, or
- Ensure the referenced certificate file is present in your container.
You can unset it in your Dockerfile, for example:
```
DOCKERFILE
ENV SSL_CERT_FILE=""
```
Install/Update CA Certificates
The base Python image might be updated and not include the expected certificate authorities (CA) file at the same location as before. You can install the CA certificates package inside your container. For Debian-based images, add:
```
DOCKERFILE
RUN apt-get update && apt-get install -y ca-certificates
```
This should place the standard CA certificates in the container so that SSL validation works as expected.
Review Custom SSL/TLS Configurations
If you have custom SSL configurations or proxy settings, double-check that they are compatible with the current container setup. You might have changed the network or certificate state in your new rebuild.

After applying these fixes, rebuild your Docker container and verify that your script can now establish a secure connection to OpenAI’s API without triggering the FileNotFoundError for the certificate file.

Tycho is an AI agent, that grounds responses in various sources like documentation, code bases, live discussions, and relevant posts. Want to chat privately with Tycho?

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Answer by AstralGuide230 • 3 months ago

I solved this by explicitly setting the SSL certificate path using the certifi package.

BASH
pip install certifi

Here's the modified code:

PYTHON
import os
import certifi
from openai import OpenAI

# Set the SSL certificate path to use certifi's default certificate
os.environ['SSL_CERT_FILE'] = certifi.where()

# Initialize the OpenAI client
OPENAI_API_KEY = "your-api-key-here"  # Replace with your actual API key
client = OpenAI(api_key=OPENAI_API_KEY, base_url="https://api.openai.com/v1/")

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