Kube Resilience

Introduction

Kube-resilience faults test the resilience of Kubernetes control-plane components (kubelet, scheduler, API server) under stress conditions that target a specific node. Use these faults to validate that the cluster, the node, and co-located workloads behave correctly when a node suddenly becomes saturated.

Kubelet density

Create a configurable number of pods on a target Kubernetes node so you can test how the node, kubelet, and workload behave during a sudden pod-storm.

kubeletdensity

Kubelet density

Kubelet density creates a configurable number of pods on a target Kubernetes node so the kubelet has to handle a sudden burst of pod-create requests in a short window.

Use cases

Test how a node, the kubelet, the container runtime, and co-located workloads behave under a pod-storm: whether the kubelet stays responsive, whether image pulls and CNI setup keep up, whether HPA reacts correctly, and whether monitoring detects the saturation within the alerting SLA.

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