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6c16309801
Phase 2 of the multi-skill build effort. Same 14-step pipeline as Phase 1.
## What landed
### New skill: engineering/kubernetes-operator
End-to-end Kubernetes Operator discipline. Published as BOTH:
- Standalone plugin: engineering/kubernetes-operator/
- Bundled mirror: engineering/skills/kubernetes-operator/
3 stdlib-only Python tools:
- crd_validator.py — checks CRD YAMLs for status subresource,
structural schema, conditions array, printer
columns, version policy, scope
- reconcile_lint.py — finds reconcile-loop bugs in Go: time.Sleep,
spec mutation via r.Update, missing requeue,
oversized reconcile bodies, panic/os.Exit,
unbalanced finalizer add/remove
- operator_capability_audit.py — scores against OperatorHub Capability
Levels 1-5 with concrete next-level steps
4 reference docs:
- operator_pattern.md — what an operator IS, when to use vs Helm/Deployment
- crd_design.md — anatomy of a production CRD, versioning, conversion
- reconcile_loop.md — idempotence patterns, error/requeue, status subresource
- tooling_landscape.md — controller-runtime / kubebuilder / operator-sdk /
metacontroller / KOPF / java-operator-sdk decision tree
Asset templates:
- crd_template.yaml — passes crd_validator.py PASS-clean
- reconcile_skeleton.go — passes reconcile_lint.py PASS-clean
Plus: SKILL.md (213 lines), README.md, /operator-audit slash command.
### Audit verdict (evidence-based)
Closest existing coverage:
- engineering-team/senior-devops — kubectl / blue-green deploys, no operators
- engineering/helm-chart-builder — Helm charts (different abstraction)
- engineering-team/cloud-security — k8s RBAC at high level
None cover the Operator pattern (CRD + controller + reconcile loop).
Verdict: BUILD. Gap is real and tooling-shaped.
### Self-test (meta-validation)
During build, the new linters caught 4 real bugs in their own asset templates:
- crd_validator.py wrongly anchored regexes to start-of-line, misclassifying
indented YAML keys (scope, singular, listKind) as missing
- reconcile_lint.py checked finalizer add/remove balance per-function,
missing the cross-function pattern in the asset (Add in main reconcile,
Remove in reconcileDelete)
Both linters fixed; assets re-tested; both PASS clean.
This is Karpathy principle 4 in action: verifiable goals catch real bugs.
### Marketplace / registry
- marketplace.json: kubernetes-operator registered as standalone plugin
- engineering-advanced-skills bundle: 45 → 46 → 47 skills, version → 2.4.1
- engineering/.claude-plugin/plugin.json: version + skill list updated
- mkdocs.yml: nav entry under "Engineering - POWERFUL"
- docs/skills/engineering/kubernetes-operator.md: docs page (manual,
pending generate-docs.py classification fix)
- docs/commands/operator-audit.md: auto-generated
- .codex/, .gemini/: synced
### Karpathy-coder gates
- complexity_checker (strict): 85/100 average, depth-4-to-6 WARNs (lambdas
in capability audit). Same range as karpathy-coder's own scripts (70/100
baseline). Verdict: WARN, not FAIL.
- All 1648 tests pass (was 1630; added 18 for the new skill).
- mkdocs build --strict: succeeded in 14.44s.
### Verifiable success criteria (all green)
✓ scripts/*.py --help → exit 0 for all 3 scripts
✓ SKILL.md frontmatter → name + description + tags + compatible_tools
✓ plugin.json schema → 8 fields exact (verified by check_plugin_json.py)
✓ sync_skill_bundles → standalone ↔ bundled mirror in sync
✓ marketplace.json → standalone entry + bundle counts updated
✓ generate-docs.py → command page generated (skill page manual)
✓ mkdocs build --strict → succeeded
✓ cross-tool sync → codex + gemini synced
✓ pytest tests/ → 1648 passed, 0 failed
✓ CHANGELOG.md → [Unreleased] entry expanded
✓ Self-test → linters caught + fixed 4 real bugs in own assets
## Files
- engineering/kubernetes-operator/ (new standalone plugin)
- engineering/skills/kubernetes-operator/ (new bundled mirror)
- commands/operator-audit.md (new slash command)
- docs/skills/engineering/kubernetes-operator.md (new docs page)
- docs/commands/operator-audit.md (auto-generated)
- mkdocs.yml (nav entries)
- .claude-plugin/marketplace.json (registered)
- engineering/.claude-plugin/plugin.json (bundle bumped)
- CHANGELOG.md ([Unreleased] expanded)
- .codex/, .gemini/ (cross-tool sync)
https://claude.ai/code/session_01Dq12xJakFRxwaoU8Pqejdm
83 lines
2.9 KiB
Markdown
83 lines
2.9 KiB
Markdown
# Kubernetes Operator
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End-to-end discipline for building Kubernetes Operators correctly. Catches the recurring reconcile-loop bugs (missing finalizers, blocking calls, status drift, RBAC over-grants, no requeue) before they reach a cluster.
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## What's inside
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- **3 stdlib Python tools** — CRD validator, reconcile-loop linter, OperatorHub capability auditor
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- **4 reference docs** — operator pattern, CRD design, reconcile patterns, framework comparison
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- **Asset templates** — production CRD YAML + Go controller skeleton (both pass the linters)
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- **`/operator-audit` slash command** — runs all 3 tools and produces a report
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## Install
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```bash
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# Via Claude Code marketplace
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/plugin install kubernetes-operator
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# Or clone the repo
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git clone https://github.com/alirezarezvani/claude-skills.git
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cd claude-skills/engineering/kubernetes-operator
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```
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## Quick start
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```bash
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SKILL=engineering/kubernetes-operator/skills/kubernetes-operator
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python "$SKILL/scripts/crd_validator.py" --crd config/crd/myapp.yaml
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python "$SKILL/scripts/reconcile_lint.py" --controller controllers/myapp_controller.go
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python "$SKILL/scripts/operator_capability_audit.py" --operator-dir .
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```
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## Scope
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This is the **Operator pattern** specifically. For other Kubernetes work:
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- Helm chart authoring → `helm-chart-builder`
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- Kubectl operations / blue-green deploys → `senior-devops`
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- General k8s security → `cloud-security`
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- Cloud architecture → `aws-solution-architect`, `azure-cloud-architect`, `gcp-cloud-architect`
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## Key principles
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1. **Reconcile is idempotent**, declarative, and bounded in time
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2. **Status subresource is non-negotiable** — without it, status updates loop spec reconciles
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3. **Finalizers protect external resources** — cascade deletion is the operator pattern's free gift, but only for owned k8s resources
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4. **RBAC is least-privilege** — controllers shouldn't read secrets they don't need
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5. **Capability levels are an SLA**, not a label — aim for L3 (Full Lifecycle) before public release
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## Skill structure
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```
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kubernetes-operator/
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├── README.md
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├── .claude-plugin/plugin.json
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└── skills/kubernetes-operator/
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├── SKILL.md
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├── scripts/
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│ ├── crd_validator.py
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│ ├── reconcile_lint.py
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│ └── operator_capability_audit.py
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├── references/
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│ ├── operator_pattern.md
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│ ├── crd_design.md
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│ ├── reconcile_loop.md
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│ └── tooling_landscape.md
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└── assets/
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├── crd_template.yaml
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└── reconcile_skeleton.go
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```
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## Verifiable success
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A team using this skill should achieve:
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- 100% of new CRDs pass `crd_validator.py` before merge
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- All reconcile functions pass `reconcile_lint.py` strict mode
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- Operators reach OperatorHub Capability Level 3 before public release
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- Mean time to fix a reconcile bug: <1 day (no infinite loops in production)
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## License
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MIT — see repo root LICENSE.
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