# kubernetes-sigs/scheduler-plugins

Repository for out-of-tree scheduler plugins based on scheduler framework.

Repository: https://github.com/kubernetes-sigs/scheduler-plugins
Canonical: https://ross.abutalabs.com/products/scheduler-plugins
Language: Go
License: Apache-2.0
License Family: permissive
Topics: k8s-sig-scheduling
Last push: 2026-08-24T12:07:01+00:00

## Health v2 (maintenance only)
Score: 84/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 56, longevity 100
- inputs: {"age_days": 2421, "days_push": 9, "days_rel": 135, "gap_med": 100, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1319, forks 611 (observed 2026-08-28T04:04:21.383627+00:00)

## What it is
A collection of out-of-tree scheduler plugins for Kubernetes built on the scheduler framework, including capacity scheduling, coscheduling (gang scheduling), load-aware Trimaran, and network/topology-aware scheduling. Plugins can be vendored as Go libraries or deployed out-of-the-box via pre-built container images and Helm charts.

## Use cases
- schedule groups of pods together with gang scheduling
- make Kubernetes scheduling load-aware instead of purely requests-based
- schedule pods with network or NUMA topology awareness
- customize pod preemption behavior in Kubernetes
- extend kube-scheduler with custom scheduling logic
- manage cluster capacity with elastic quota scheduling

## When to choose
- you need scheduling behaviors kube-scheduler's built-in plugins don't provide, like gang scheduling or load-aware placement
- you want production-proven plugins exercised at large companies
- you prefer deploying via official images or Helm charts
- you want to vendor scheduler plugins as a Go SDK in your own scheduler build

## When to avoid
- your scheduling needs are fully met by default kube-scheduler configuration and profiles
- you're not running Kubernetes
- you only need the sample plugins, which are explicitly not production-ready
- you want a fully managed scheduling solution without operating custom scheduler images

## Facets
- artifact type: plugin
- maturity: active
- function: scheduling, container-orchestration, middleware
- domain: cloud-computing, infrastructure-as-code, microservices
- platform: go, cloud, self-hosted
- tags: kube-scheduler, scheduler-framework, gang-scheduling, helm-charts, coscheduling, load-aware-scheduling, topology-aware-scheduling, containers, devops, kubernetes, docker

## Member repositories
- kubernetes-sigs/scheduler-plugins (main) score 84

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:21.383627+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:47:54.746733+00:00, confidence not recorded.
  - readme: https://github.com/kubernetes-sigs/scheduler-plugins (fetched 2026-08-28T04:04:21.383627+00:00, sha a5751743cc1a)
- Data as of 2026-08-30T08:39:29.467469+00:00.