actions / actions/actions-runner-controller

Cache to disk: EBS volumes in EKS

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#3,244 5 comments 8 reactions 0 assignees View on GitHub

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community enhancement needs triage
Dominant language
Go
Stars
6.5k
Forks
1.5k
Avg merge
2d 2h
Merged PRs (30d)
27

Description

What would you like added?

I would like to be able to cache docker images and other parts of the build process to a disk.

Why is this needed?

To speed up builds and skip repetitive steps.

Additional context

Seems like this has been widely talked about in this project, but the newest version of RunnerSet behaves more like a deployment than a StatefulSet, which makes re-using disks in AWS difficult. I imagine if the RunnerSet or AutoscalingRunnerSet used a StatefulSet, we could re-use specific disks...

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 by reading how RunnerSet and AutoscalingRunnerSet are implemented and how they create runner workloads in EKS. Compare their current behavior with the StatefulSet behavior described in the issue, then determine the expected lifecycle for EBS-backed disk reuse and how Docker image and build caches should persist. Done means a documented, tested approach for reusing disks while preserving runner autoscaling behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
aws, github-actions, go, kubernetes
Domain
ci-cd, cloud, infrastructure
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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