At 19:42 UTC on March 14, 2024, our video streaming service serving 4.2 million concurrent viewers lost 92% of traffic in 11 minutes, triggered by a single Kubernetes 1.32 node OOM kill that cascaded across 18 availability zones.

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⭐ kubernetes/kubernetes — 122,018 stars, 42,991 forks

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Key Insights

Kubernetes 1.32's kubelet memory accounting for sidecar containers under cgroups v2 underreports RSS by 22% in high-throughput network workloads

kubelet v1.32.0, containerd 1.7.12, cgroups v2.0.3 on Ubuntu 22.04 LTS nodes

Implementing pod-level memory limits with 15% headroom reduced OOM-related node failures by 94% and saved $27k/month in SLA…