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Kubernetes Helper Skill

kubernetes-helper

Generate and manage Kubernetes manifests including deployments, services, and ingress. Use when deploying applications to Kubernetes or managing k8s resources.

SKILL.md

Full skill instructions

Kubernetes Helper Skill

Kubernetesマニフェストとコマンドを生成するスキルです。

概要

Deployment、Service、ConfigMap等のマニフェストを自動生成します。

主な機能

  • マニフェスト生成: Deployment、Service、Ingress等
  • ベストプラクティス: リソース制限、ヘルスチェック
  • Helm Charts: チャート生成
  • トラブルシューティング: よくある問題の解決

生成例

Deployment

apiVersion: apps/​v1
kind: Deployment
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: myapp:1.0.0
        ports:
        - containerPort: 8080
        env:
        - name: DATABASE_URL
          valueFrom:
            secretKeyRef:
              name: myapp-secrets
              key: database-url
        resources:
          requests:
            memory: "128Mi"
            cpu: "100m"
          limits:
            memory: "256Mi"
            cpu: "200m"
        livenessProbe:
          httpGet:
            path: /​health
            port: 8080
          initialDelaySeconds: 30
          periodSeconds: 10
        readinessProbe:
          httpGet:
            path: /​ready
            port: 8080
          initialDelaySeconds: 5
          periodSeconds: 5

Service

apiVersion: v1
kind: Service
metadata:
  name: myapp-service
spec:
  selector:
    app: myapp
  ports:
  - protocol: TCP
    port: 80
    targetPort: 8080
  type: LoadBalancer

ConfigMap

apiVersion: v1
kind: ConfigMap
metadata:
  name: myapp-config
data:
  app.conf: |
    server {
      listen 80;
      server_name example.com;
    }
  database.yml: |
    production:
      adapter: postgresql
      database: myapp

Secret

apiVersion: v1
kind: Secret
metadata:
  name: myapp-secrets
type: Opaque
stringData:
  database-url: postgresql://user:pass@host:5432/​db
  api-key: sk_live_abc123

Ingress

apiVersion: networking.k8s.io/​v1
kind: Ingress
metadata:
  name: myapp-ingress
  annotations:
    cert-manager.io/​cluster-issuer: letsencrypt
spec:
  tls:
  - hosts:
    - example.com
    secretName: myapp-tls
  rules:
  - host: example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: myapp-service
            port:
              number: 80

よく使うコマンド

# Podの確認
kubectl get pods

# ログ確認
kubectl logs <pod-name>

# Podに入る
kubectl exec -it <pod-name> -- /​bin/​sh

# マニフェスト適用
kubectl apply -f deployment.yaml

# リソース削除
kubectl delete -f deployment.yaml

# スケーリング
kubectl scale deployment myapp --replicas=5

バージョン情報

  • スキルバージョン: 1.0.0

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