# vmware-tanzu/sonobuoy

Sonobuoy is a diagnostic tool that makes it easier to understand the state of a Kubernetes cluster by running a set of Kubernetes conformance tests and other plugins in an accessible and non-destructive manner.

Repository: https://github.com/vmware-tanzu/sonobuoy
Canonical: https://ross.abutalabs.com/products/sonobuoy
Homepage: https://sonobuoy.io
Language: Go
License: Apache-2.0
License Family: permissive
Topics: kubernetes, kubernetes-cluster, kubernetes-setup, kubernetes-deployment, discovery, bugreport, heptio, tanzu, sonobuoy, conformance, conformance-tests, cncf
Last push: 2026-07-27T05:48:05+00:00

## Health v2 (maintenance only)
Score: 83/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 59, longevity 100
- inputs: {"age_days": 3325, "days_push": 37, "days_rel": 63, "gap_med": 497, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3051, forks 360 (observed 2026-08-28T04:07:39.629903+00:00)

## What it is
Sonobuoy is a Go CLI diagnostic tool that runs Kubernetes conformance tests and custom plugins against a cluster to generate informative, non-destructive reports. It is the underlying technology for CNCF Certified Kubernetes conformance certification and supports extensible plugins for custom data collection.

## Use cases
- run kubernetes conformance tests on my cluster
- certify my kubernetes distribution for CNCF conformance
- generate a diagnostic report of my kubernetes cluster state
- debug a troublesome workload in kubernetes
- collect custom data from cluster nodes via plugins
- run e2e tests on an air-gapped kubernetes cluster

## When to choose
- you need to validate a cluster conforms to official Kubernetes specifications
- you want non-destructive diagnostics and selective resource dumps from a cluster
- you need CNCF conformance certification results
- you run clusters in air-gapped environments with private registries

## When to avoid
- you need continuous runtime monitoring or alerting rather than on-demand diagnostics
- you want application-level testing rather than cluster-level conformance
- you need a GUI dashboard for cluster observability

## Facets
- artifact type: cli-tool
- maturity: active
- function: testing, e2e-testing, monitoring, cli, developer-tools
- domain: developer-tools, testing
- platform: cli, cross-platform, go
- tags: kubernetes-conformance, cluster-diagnostics, cncf-certification, workload-debugging, plugin-system, air-gapped, devops, containers, kubernetes, docker

## Member repositories
- vmware-tanzu/sonobuoy (main) score 83

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:39.629903+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 2026-08-30T07:28:54.394631+00:00, confidence not recorded.
  - readme: https://github.com/vmware-tanzu/sonobuoy (fetched 2026-08-28T04:07:39.629903+00:00, sha 44b83504f1af)
  - homepage: https://sonobuoy.io (fetched 2026-08-29T09:44:00.647789+00:00, sha 13a60e6be1ab)
  - site_page: https://sonobuoy.io/docs/v0.57.5 (fetched 2026-08-29T09:44:00.656834+00:00, sha 1de82d6c46d2)
- Data as of 2026-08-30T08:39:29.467469+00:00.