kubernetes-sigs/kube-scheduler-simulator

Health v2 · maintenance only

Adoption not part of the score

1095 stars · 173 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A simulator for the Kubernetes kube-scheduler that runs a fake KWOK-powered cluster with a debuggable scheduler. It annotates Pods with detailed per-plugin scheduling decisions so users can test scheduler configurations, plugins, and extenders.

Use cases

• test custom kubernetes scheduler plugins before deploying
• debug why pods are scheduled onto certain nodes
• evaluate KubeSchedulerConfiguration changes safely
• simulate scheduler extenders without a real cluster
• inspect per-plugin filter and scoring results for pods
• experiment with scheduling behavior on a fake cluster

When to choose

• you are developing or customizing a kube-scheduler plugin or configuration
• you need visibility into scheduler decisions without control-plane log access
• you want to validate scheduling behavior on a lightweight fake cluster

When to avoid

• you need to simulate real workloads with actual resource consumption
• you want production scheduling or performance benchmarking of a real cluster

Facets

service · maturity active

simulation monitoring developer-tools http-server developer-tools microservices go self-hosted kubernetes kube-scheduler scheduling-framework kwok debugging sig-scheduling containers automation docker web-server

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markdown · JSON · MCP: product_card(name="kubernetes-sigs/kube-scheduler-simulator")