Alibaba Cloud Native

Mar 22, 2021 · Cloud Native

How OpenKruise Accelerates Large‑Scale Cluster Deployments with Image Pre‑warming

This article explains why image pre‑warming is essential for large Kubernetes clusters, describes OpenKruise’s architecture and custom resources (NodeImage, ImagePullJob) that enable cluster‑wide, sidecar, and resource‑pool image pre‑pulling, and outlines upcoming enhancements that combine pre‑warming with in‑place upgrades.