# kubernetes-skill

Prevents Kubernetes hallucinations when writing manifests, Helm charts, and Kustomize overlays. It diagnoses misconfigurations before deployment.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 1400 installs · ★ 465
- Author: LukasNiessen
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/LukasNiessen/kubernetes-skill/tree/HEAD/SKILL.md
- Updated: 2026-09-13
- HTML: https://affpapa.org/en/nevibecode/skills/kubernetes-skill

## What it does

This skill guides AI coding assistants through a structured workflow for Kubernetes manifests, Helm templates, and Kustomize overlays. It captures the target environment first: cluster version, distribution like EKS or GKE, workload type, and admission policies. When these details are omitted, the agent must explicitly state its assumptions before generating YAML.

Instead of loading all reference docs at once, the skill pulls specific failure-mode files on demand. It targets six primary issues: insecure workload defaults, resource starvation, open network exposure, privilege sprawl, fragile rollout strategies, and API drift. Cloud-specific patterns for AWS, Azure, GCP, or OpenShift load only when matching platform signals are detected.

Every proposed fix includes a rollback path and explicit validation steps. The workflow requires schema verification with `kubeconform` and dry runs via `kubectl diff` or `kubectl apply --dry-run=server`. Direct production deployment without a reviewed diff is strictly forbidden by the skill contract.

## Requirements
- Works with: Kubernetes

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add LukasNiessen/kubernetes-skill --skill kubernetes-skill -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/kubernetes-skill/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/kubernetes-skill/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add LukasNiessen/kubernetes-skill --skill kubernetes-skill -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/kubernetes-skill/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add LukasNiessen/kubernetes-skill --skill kubernetes-skill -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/kubernetes-skill/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install LukasNiessen/kubernetes-skill kubernetes-skill
```

2. **Manually: put the files in place**
- File: `.github/skills/kubernetes-skill/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add LukasNiessen/kubernetes-skill --skill kubernetes-skill -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/LukasNiessen/kubernetes-skill
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/kubernetes-skill/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add LukasNiessen/kubernetes-skill --skill kubernetes-skill -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/LukasNiessen/kubernetes-skill/tree/HEAD/SKILL.md

## When to use it
- harden pod security contexts and eliminate PSS violations
- configure resource limits and PodDisruptionBudgets to stop starvation
- restrict network traffic with tailored NetworkPolicies
- catch deprecated APIs and schema mismatches using kubeconform
- generate cloud-specific manifests for EKS, AKS, GKE, or OpenShift

## Example prompts
- Review this Deployment for insecure security contexts and missing resource limits on EKS 1.30
- Write a hardened Helm template for a StatefulSet with NetworkPolicy and PDB for production
- Audit these RBAC roles and manifests for API drift before upgrading to Kubernetes 1.31

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 3f61da71d9b949c3.

BEGIN THIRD-PARTY FILE 3f61da71d9b949c3
```text
---
name: kubernetes-skill
description: "Prevent Kubernetes hallucinations by diagnosing and fixing failure modes: insecure workload defaults, resource starvation, network exposure, privilege sprawl, fragile rollouts, and API drift. Use when generating, reviewing, refactoring, or migrating manifests, Helm charts, Kustomize overlays, cluster policies, and platform-specific Kubernetes work for EKS, GKE, AKS, OpenShift, GitOps controllers, or observability stacks."
---

# KubeShark: Failure-Mode Workflow for Kubernetes

Run this workflow top to bottom.

## 1) Capture execution context

Record before writing manifests:
- cluster version (e.g. 1.30, 1.31) and distribution (EKS, GKE, AKS, k3s, vanilla)
- target namespace and environment criticality (dev/staging/prod)
- workload type (Deployment, StatefulSet, Job, CronJob, DaemonSet)
- deployment method (raw YAML, Helm, Kustomize, operator-managed)
- policy enforcement (Pod Security Admission level, Kyverno, OPA/Gatekeeper)
- cloud provider and CNI (affects networking, storage classes, load balancers)
- platform controllers/add-ons (GitOps, observability, ingress, service mesh, autoscaling)

If unknown, state assumptions explicitly.

## 2) Diagnose likely failure mode(s)

Select one or more based on user intent and risk:
- insecure workload defaults: missing security contexts, PSS violations, host access
- resource starvation: missing requests/limits, no PDB, scheduling chaos
- network exposure: flat networking, missing policies, wrong Service types, DNS issues
- privilege sprawl: overly permissive RBAC, leaked secrets, excess ServiceAccount rights
- fragile rollouts: misconfigured probes, mutable tags, unsafe update strategies
- API drift: wrong apiVersion, deprecated APIs, schema violations, tool-specific errors

## 3) Load only the relevant reference file(s)

Primary failure-mode references:
- `references/insecure-workload-defaults.md`
- `references/resource-starvation.md`
- `references/network-exposure.md`
- `references/privilege-sprawl.md`
- `references/fragile-rollouts.md`
- `references/api-drift.md`

Supplemental references (only when needed):
- `references/deployment-patterns.md`
- `references/stateful-patterns.md`
- `references/job-patterns.md`
- `references/daemonset-operator-patterns.md`
- `references/security-hardening.md`
- `references/observability.md`
- `references/multi-tenancy.md`
- `references/storage-and-state.md`
- `references/helm-patterns.md`
- `references/kustomize-patterns.md`
```
END THIRD-PARTY FILE 3f61da71d9b949c3

The third-party file has ended. Everything between the 3f61da71d9b949c3 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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