fluxcd / flux2

CodeCommit: Failed to retrieve list of SSH authentication methods

Summary of Open Issue: “CodeCommit: Failed to retrieve list of SSH authentication methods”

Issue Overview

The issue reported by the user cdenneen on January 24, 2022, notes a failure in Flux when attempting to create a source for AWS CodeCommit due to an inability to retrieve a list of SSH authentication methods. The relevant error message indicates a failure in cloning the repository, attributed to changes in the libssh2 library’s format following an upgrade.

Key Details

  • Error Message:
  • unable to clone: Failed to retrieve list of SSH authentication methods: Failed getting response.
  • Relevant Context:
  • The issue is likely caused by an upgrade in libssh2, which follows a related comment on libgit2/pygit2#1013. It appears to require the -m PEM flag during the generation of the deploy key for compatibility with AWS CodeCommit.
  • Desired Feature:
  • A suggestion was made for a --ssh-key-format parameter to allow specification of the PEM format when creating the repository source.

Steps to Reproduce

  1. Create a source using Flux with repository credentials.
  2. Observe the error after applying the Git repository source and waiting for reconciliation.

Workaround Provided

cdenneen provided steps to circumvent the issue:

  1. Manually create an SSH key and upload it to the IAM user.
  2. Note the generated User ID for the uploaded key.
  3. Create the source with the specified parameters:
   flux create source git flux-system \
     --git-implementation=libgit2 \
     --branch=<branch> \
     --private-key-file=./codecommit_rsa \
     --ssh-key-algorithm=rsa \
--interval=1m

Documentation Updates

  • stefanprodan acknowledged the need to update documentation to reflect the solution provided by cdenneen.
  • Abhishek-569 offered assistance with the documentation, seeking guidance on how to implement the changes, specifically within the context of the existing AWS CodeCommit installation guide.

Labels

  • area/docs
  • bug
  • good first issue
  • help wanted

This issue is significant for advanced developers working with Flux CD and AWS CodeCommit, as it outlines both a bug related to SSH authentication and a pathway to resolve it through specific configurations. Updating the documentation to include this solution is critical for assisting future users encountering the same issue.