actions / actions/actions-runner-controller

Client TLS certificates for AutoscalingRunnerSet

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community enhancement needs triage
Dominant language
Go
Stars
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Forks
1.5k
Avg merge
2d 2h
Merged PRs (30d)
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Description

What would you like added?

I'd like to add support for configuring client TLS certificates in AutoscalingRunnerSet

Why is this needed?

In our environment, we use an HTTPS proxy with mTLS for client authentication, e.g.

curl --proxy https://our-proxy --proxy-key $KEY_PATH --proxy-cert $CERT_PATH ...

Currently, only basic HTTP authentication is supported

Additional context

Looking at the code https://github.com/actions/actions-runner-controller/blob/088e2a3a9029f1c85e7bd3d2539f8b8ead5947f9/github/actions/client.go#L222 I think this boils down to threading configuration down to set tls.Config.GetClientCertificate

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with github/actions/client.go around the referenced client setup, then trace how AutoscalingRunnerSet configuration reaches it. Review crypto/tls.Config.GetClientCertificate and the existing proxy authentication path. Done means AutoscalingRunnerSet can configure client certificates for HTTPS proxy mTLS instead of supporting only basic authentication.

Written by the indexing model from the issue text.

Assessment

Tech stack
go, kubernetes
Domain
infrastructure
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
48/100

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