This article provides a comprehensive, step‑by‑step guide for performing an in‑place upgrade of MySQL 8.0 (including MGR clusters) from earlier versions, covering pre‑upgrade checks, backup procedures, configuration changes, data dictionary upgrade, server upgrade, verification, rollback, and common pitfalls.
OpenKruise v1.1 extends Kubernetes with ordered container startup, in‑place upgrade sequencing, StatefulSet PVC auto‑deletion policies, a refactored Advanced DaemonSet with lifecycle hooks, and a DisableDeepCopy performance tweak, all while remaining compatible with clusters running Kubernetes 1.16 or newer.
This article explains how OpenKruise SidecarSet enables automatic sidecar injection, in‑place upgrades without restarting the main container, and advanced rollout strategies such as rolling updates, canary releases, and scatter deployments, illustrated with a logtail sidecar example and detailed YAML configurations.
This article explains the concept, benefits, and technical implementation of in‑place upgrades for Pods in Kubernetes, detailing how OpenKruise leverages kubelet image hashing, update restrictions, container status reporting, and readiness gates to achieve fast, low‑impact, and controllable rollouts.
PouchContainer introduces an upgrade API that allows seamless, in‑place upgrades of stateful containers by preserving network, storage, and configuration while reducing API calls, offering consistency, flexibility, and robustness for enterprise‑scale deployments.
