github.blog GitHub Actions Runner Controller 0.15.0 Released with Key Improvements
Article Content
- •ARC 0.15.0 enhances reliability and scalability for self-hosted runners.
- •Patch requests now reduce API payload sizes, improving throughput.
- •Lifecycle management improvements minimize disruptions during upgrades.
On October 20, 2026, GitHub announced the release of Actions Runner Controller (ARC) 0.15.0, which focuses on enhancing reliability, scalability, and observability for self-hosted GitHub Actions runners on Kubernetes. The update introduces several improvements, including the use of patch requests for controller updates to reduce API payload sizes and enhance throughput. Lifecycle management has been improved with in-place patch version upgrades, and the controller's shutdown behavior is now more reliable with configurable termination grace periods. Additionally, the controller can re-register runner scale sets when discrepancies occur with the GitHub Actions service. These changes are particularly beneficial for organizations managing large runner fleets, as they minimize disruptions during upgrades and API updates.
Ask AI about this cluster
Answers cite the sources they use
Timeline
More articles in this cluster (2)
Common questions
What improvements does ARC 0.15.0 offer?
Who is affected by this update?
What should we do after the release?
Continue Reading
Critical Zero-Day Exploited in BeyondTrust Remote Support by China-linked Group A critical vulnerability in BeyondTrust Remote Support, tracked as CVE-2026-102764 with a CVSS score of 9.3, has been exploited by the China-linked espionage group Armory Castle since August 29, 2026. This flaw allows unauthenticated remote attackers to perform file operations, gaining root control and access to…
Silent Lynx Targets CIS Governments via WinRAR Exploit The threat actor Silent Lynx has launched a series of attacks against government organizations in the Commonwealth of Independent States (CIS) from June 2025 to August 2026. These attacks exploit a vulnerability in WinRAR (CVE-2025-8088) to deploy reverse shells, including FoalShell and PickleShell, facilitating…