fix: resolve CI failures for egress policies and Python 3.7 buildpack support #388
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The conformance workflow was failing with ECONNREFUSED errors when trying to download Python binaries from GitHub releases. This was caused by the harden-runner egress policy blocking connections to the GitHub Actions CDN IP addresses. Added *.actions.githubusercontent.com:443 to the allowed endpoints to fix Python setup for all versions (3.7, 3.8, etc).
Google Cloud Buildpacks dropped Python 3.7 support for Ubuntu 22.04. The version is not available in their runtime manifest. Note: Functions Framework still supports Python 3.7, which is tested in unit and conformance tests using GitHub Actions with Ubuntu 20.04.
The Python binaries are actually hosted on release-assets.githubusercontent.com, not *.actions.githubusercontent.com
The same ECONNREFUSED issue was affecting multiple workflows with harden-runner egress policies
taeold
changed the title
maemayve
approved these changes
Jul 22, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Summary
Fixes CI/CD failures across multiple workflows due to egress policy blocking and buildpack version support issues.
Problems Fixed
1. ECONNREFUSED Errors in Multiple Workflows
The following workflows were failing with connection refused errors when downloading Python:
Error:
Root Cause: The harden-runner egress policies were blocking connections to GitHub's release assets CDN.
Solution: Added
release-assets.githubusercontent.com:443to the allowed endpoints in:.github/workflows/conformance.yml.github/workflows/unit.yml.github/workflows/conformance-asgi.yml2. Buildpack Integration Test - Python 3.7 Failure
The buildpack test was failing with:
Root Cause: Google Cloud Buildpacks dropped Python 3.7 support for Ubuntu 22.04. The version is not available in https://dl.google.com/runtimes/ubuntu2204/python/version.json
Solution: Removed Python 3.7 from buildpack integration tests. Note that Functions Framework still supports Python 3.7, which continues to be tested in unit and conformance tests.
Test Plan