# 模块 4：K8s 基础 — Nginx 完整示例 (ConfigMap + Deployment + Service) # 用法: kubectl apply -f 01_nginx_demo.yaml # 对应 PPT 第 16 页 [动手] K8s 初体验 # 所有资源部署在 gpu-demo namespace --- # ===== Namespace ===== apiVersion: v1 kind: Namespace metadata: name: gpu-demo --- # ===== ConfigMap: 自定义 nginx 首页 ===== # 演示"配置与镜像分离" — 不改镜像, 只改 ConfigMap 就能换页面内容 apiVersion: v1 kind: ConfigMap metadata: name: nginx-index namespace: gpu-demo labels: app: nginx-demo data: index.html: | K8s Nginx Demo

Hello from Kubernetes!

Pod Name: nginx-demo

This page is served from a ConfigMap.

--- # ===== Deployment: 2 副本 nginx, 挂载 ConfigMap ===== apiVersion: apps/v1 kind: Deployment metadata: name: nginx-demo namespace: gpu-demo labels: app: nginx-demo spec: replicas: 1 selector: matchLabels: app: nginx-demo template: metadata: labels: app: nginx-demo spec: containers: - name: nginx image: nginx:alpine ports: - containerPort: 80 # 资源限制 — 引出 K8s 资源管理, 顺接到 nvidia.com/gpu resources: requests: cpu: "250m" memory: "64Mi" limits: cpu: "500m" memory: "128Mi" # 挂载 ConfigMap 到 nginx 默认首页位置 volumeMounts: - name: nginx-index mountPath: /usr/share/nginx/html/index.html subPath: index.html volumes: - name: nginx-index configMap: name: nginx-index --- # ===== Service: NodePort 暴露 + 内部 ClusterIP ===== apiVersion: v1 kind: Service metadata: name: nginx-demo namespace: gpu-demo labels: app: nginx-demo spec: type: NodePort selector: app: nginx-demo ports: - port: 80 targetPort: 80 nodePort: 30080 # 通过 :30080 访问