https://support.tools/tags/cluster-upgrades/Recent content in Cluster Upgrades on Support ToolsHugoen-USMon, 02 Nov 2026 00:00:00 -0600https://support.tools/reddit-kubernetes-cluster-upgrade-failure-production-incident/Mon, 02 Nov 2026 00:00:00 -0600https://support.tools/reddit-kubernetes-cluster-upgrade-failure-production-incident/<p>On March 14, 2023, Reddit experienced a multi-hour production outage affecting their entire platform during what should have been a routine Kubernetes cluster upgrade. The incident cascaded through their infrastructure, impacting millions of users and demonstrating how seemingly straightforward maintenance operations can become critical failures without proper planning, testing, and rollback procedures. This comprehensive analysis explores the technical details of the failure and provides production-ready strategies for safe Kubernetes upgrades.</p>