deployment

# Deployment 管理 ## 概述 Deployment 滚动更新、回滚、扩缩容等技能。 ## 基础操作 ### 查看 Deployment ```bash # 列出 Deployment kubectl get deployments kubectl get deploy -o wide kubectl get deploy -n namespace # 详细信息 kubectl describe deploy deployment-name kubectl get deploy deployment-name -o yaml ``` ### 创建 Deployment ```yaml # deployment.yaml apiVersion: apps/v1 kind: Deployment metadata: name: nginx-deployment labels: app: nginx spec: replicas: 3 selector: matchLabels: app: nginx template: metadata: labels: app: nginx spec: containers: - name: nginx image: nginx:1.20 ports: - containerPort: 80 resources: requests: memory: "64Mi" cpu: "100m" limits: memory: "128Mi" cpu: "200m" ``` ```bash kubectl apply -f deployment.yaml kubectl create deployment nginx --image=nginx:1.20 --replicas=3 ``` ### 删除 Deployment ```bash kubectl delete deploy deployment-name kubectl delete -f deployment.yaml ``` ## 扩缩容 ```bash # 手动扩缩容 kubectl scale deploy deployment-name --replicas=5 # 自动扩缩容 (HPA) kubectl autoscale deploy deployment-name --min=2 --max=10 --cpu-percent=80 # 查看 HPA kubectl get hpa kubectl describe hpa deployment-name ``` ### HPA 配置 ```yaml apiVersion: autoscaling/v2 kind: HorizontalPodAutoscaler metadata: name: nginx-hpa spec: scaleTargetRef: apiVersion: apps/v1 kind: Deployment name: nginx-deployment minReplicas: 2 maxRepl...