自動部署與 Rollback

Vibe Prompt

「幫我設計 Kubernetes 的零停機部署策略，包含 Rolling Update、Readiness Probe、Rollback。」

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
spec:
  replicas: 3
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
  template:
    spec:
      containers:
      - name: app
        image: my-app:latest
        readinessProbe:
          httpGet:
            path: /api/health
            port: 3000
          initialDelaySeconds: 5
          periodSeconds: 10
        livenessProbe:
          httpGet:
            path: /api/health
            port: 3000
          initialDelaySeconds: 15
          periodSeconds: 20

Rollback 指令

# 查看部署歷史
kubectl rollout history deployment/my-app

# 回滾到上一個版本
kubectl rollout undo deployment/my-app

# 回滾到指定版本
kubectl rollout undo deployment/my-app --to-revision=2

# 查看滾動狀態
kubectl rollout status deployment/my-app

Vibe Prompt

「當部署失敗時，自動 Rollback 並發送 Slack 通知。幫我寫這個 GitHub Actions Workflow。」