基本框架
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# 02-04 Nginx + 工作节点 + IngressRoute(M4)
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> 场景:nginx 指定落在 ylc64(`nodeSelector: kubernetes.io/hostname: ylc64`),跨节点 IngressRoute 暴露 `/demo-m4`。整合于 `02-05-nginx-验证矩阵-一键部署.md`。
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## 前置条件
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- 已完成 `01-02-k3s-工作节点.md`
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- Traefik CRD 可用
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- 工作节点网络连通
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- 按实际工作节点名(如 ylc64)修改 `nodeSelector` 中的 hostname
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## 操作步骤
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1. 部署 nginx Deployment(nodeSelector 指定工作节点 hostname)+ Service
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2. 创建 Middleware + IngressRoute(`PathPrefix(/demo-m4)`)
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3. 等待资源就绪
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示例 YAML 见 `ansible/files/nginx-matrix/04-worker-ingressroute.yaml`。
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## 部署命令
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```bash
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kubectl apply -f ansible/files/nginx-matrix/04-worker-ingressroute.yaml
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```
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## 验证命令
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```bash
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kubectl get pod,svc -n default -o wide
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kubectl get ingressroute -n default
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curl -i --max-time 3 http://<入口节点IP>/demo-m4/
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```
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## 预期
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- 返回 200,页面包含 Welcome to nginx!
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- Pod 落在指定工作节点
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## 删除
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```bash
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kubectl delete -f ansible/files/nginx-matrix/04-worker-ingressroute.yaml
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```
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## 失败排查
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- 优先看 Traefik 日志
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- 检查节点间网络转发、firewalld 基线
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- 参考 `06-01-k3s-networkpolicy-故障排查.md`
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## 下一步
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- 返回 `02-05-nginx-验证矩阵-一键部署.md` 或 `00-00-构建总览.md`
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