Go to file
github-actions[bot] 311a1688fc Updates: container-hooks to v0.8.0 2025-10-06 09:07:50 +00:00
.github Bump the actions group across 1 directory with 5 updates (#4262) 2025-10-01 17:27:52 +02:00
acceptance Pin third party actions (#3981) 2025-04-17 12:19:15 +02:00
apis Remove ephemeral runner when exit code != 0 and is patched with the job (#4239) 2025-09-17 21:40:37 +02:00
build Extend the user agent and fix the build version for the listener app (#2892) 2023-09-14 20:10:49 +02:00
charts Introduce new kubernetes-novolume mode (#4250) 2025-10-03 12:03:38 +02:00
cmd Add workflow name and target labels (#4240) 2025-09-30 16:01:51 +02:00
config Remove ephemeral runner when exit code != 0 and is patched with the job (#4239) 2025-09-17 21:40:37 +02:00
contrib Small readme updates for readability (#3860) 2025-03-10 22:43:02 +01:00
controllers Remove ephemeral runner when exit code != 0 and is patched with the job (#4239) 2025-09-17 21:40:37 +02:00
docs docs: fix repo path typo (#4229) 2025-08-27 16:17:52 +02:00
github Remove ephemeral runner when exit code != 0 and is patched with the job (#4239) 2025-09-17 21:40:37 +02:00
hack Small readme updates for readability (#3860) 2025-03-10 22:43:02 +01:00
hash Introduce new preview auto-scaling mode for ARC. (#2153) 2023-01-17 12:06:20 -05:00
logging Introduce new preview auto-scaling mode for ARC. (#2153) 2023-01-17 12:06:20 -05:00
pkg Small readme updates for readability (#3860) 2025-03-10 22:43:02 +01:00
runner Updates: container-hooks to v0.8.0 2025-10-06 09:07:50 +00:00
simulator Use head_branch metric (#2549) 2023-05-28 16:36:55 +09:00
test Updates: container-hooks to v0.8.0 2025-10-06 09:07:50 +00:00
test_e2e_arc Azure Key Vault integration to resolve secrets (#4090) 2025-06-11 15:53:33 +02:00
testing Bump node actions (#3569) 2024-06-21 12:11:29 +02:00
vault Azure Key Vault integration to resolve secrets (#4090) 2025-06-11 15:53:33 +02:00
.dockerignore dockerfile,e2e: Use buildx and cache mounts for faster rebuilds in E2E 2022-03-02 19:03:20 +09:00
.gitattributes Update CONTRIBUTING.md with new contribution guidelines and release process documentation (#2596) 2023-05-17 07:42:35 -04:00
.gitignore Add DrainJobsMode (aka UpdateStrategy feature) (#2569) 2023-05-23 07:42:30 -04:00
.golangci.yaml upgrade(golangci-lint): v2.1.2 (#4023) 2025-04-17 16:14:31 +02:00
CODEOWNERS Update CODEOWNERS to include new maintainer (#4253) 2025-09-17 21:33:38 +02:00
CODE_OF_CONDUCT.md Add code of conduct 2022-12-13 11:38:01 +00:00
CONTRIBUTING.md Upgrade docker and docker compose in line with GH hosted runners (#3053) 2023-11-27 12:25:19 +09:00
Dockerfile Fix docker lint warnings (#4074) 2025-05-14 19:57:39 +02:00
LICENSE Add LICENSE 2020-01-30 20:12:12 +09:00
Makefile Updates: container-hooks to v0.8.0 2025-10-06 09:07:50 +00:00
PROJECT Introduce new preview auto-scaling mode for ARC. (#2153) 2023-01-17 12:06:20 -05:00
README.md Small readme updates for readability (#3860) 2025-03-10 22:43:02 +01:00
SECURITY.md Add security guidelines and policy 2022-12-13 11:39:39 +00:00
TROUBLESHOOTING.md feat: allow for modifying `var-run` mount maximum size limit (#2624) 2023-05-27 11:47:23 +09:00
go.mod Bump github.com/golang-jwt/jwt/v5 from 5.2.1 to 5.2.2 (#4120) 2025-06-11 21:43:46 +02:00
go.sum Bump github.com/golang-jwt/jwt/v5 from 5.2.1 to 5.2.2 (#4120) 2025-06-11 21:43:46 +02:00
main.go feat(runner): add ubuntu 24.04 support (#3598) 2025-07-01 18:34:52 +09:00

README.md

Actions Runner Controller (ARC)

CII Best Practices awesome-runners Artifact Hub

About

Actions Runner Controller (ARC) is a Kubernetes operator that orchestrates and scales self-hosted runners for GitHub Actions.

With ARC, you can create runner scale sets that automatically scale based on the number of workflows running in your repository, organization, or enterprise. Because controlled runners can be ephemeral and based on containers, new runner instances can scale up or down rapidly and cleanly. For more information about autoscaling, see "Autoscaling with self-hosted runners."

You can set up ARC on Kubernetes using Helm, then create and run a workflow that uses runner scale sets. For more information about runner scale sets, see "Deploying runner scale sets with Actions Runner Controller."

People

Actions Runner Controller (ARC) is an open-source project currently developed and maintained in collaboration with the GitHub Actions team, external maintainers @mumoshu and @toast-gear, various contributors, and the awesome community.

If you think the project is awesome and is adding value to your business, please consider directly sponsoring community maintainers and individual contributors via GitHub Sponsors.

If you are already the employer of one of the contributors, sponsoring via GitHub Sponsors might not be an option. Just support them by other means!

See the sponsorship dashboard for the former and the current sponsors.

Getting Started

To give ARC a try with just a handful of commands, please refer to the Quickstart guide.

For an overview of ARC, please refer to About ARC.

With the introduction of autoscaling runner scale sets, the existing autoscaling modes are now legacy. The legacy modes have certain use cases and will continue to be maintained by the community only.

For further information on what is supported by GitHub and what's managed by the community, please refer to this announcement discussion.

Documentation

ARC documentation is available on docs.github.com.

Legacy documentation

The following documentation is for the legacy autoscaling modes that continue to be maintained by the community:

Contributing

We welcome contributions from the community. For more details on contributing to the project (including requirements), please refer to "Getting Started with Contributing."

Troubleshooting

We are very happy to help you with any issues you have. Please refer to the "Troubleshooting" section for common issues.