配置StatefulSets，
apiVersion: apps/v1 kind: StatefulSet metadata: name: web labels: app: web spec: serviceName: web # 关键：将StatefulSet与Headless Service关联，提供稳定的网络身份 replicas: 2 selector: matchLabels: app: web template: metadata: labels: app: web spec: containers: - name: nginx image: nginx:alpine ports: - containerPort: 80 name: http volumeMounts: - name: www mountPath: /usr/share/nginx/html # NGINX默认的web根目录 # 关键：定义PersistentVolumeClaims (PVCs) 模板 # StatefulSet将为每个Pod自动创建独立的PVC，并以 <volume-name>-<statefulset-name>-<ordinal-index> 命名 volumeClaimTemplates: - metadata: name: www spec: accessModes: ["ReadWriteOnce"] resources: requests: storage: 1Gi storageClassName: standard配置无头服务，
apiVersion: v1 kind: Service metadata: name: web labels: app: web spec: ports: - port: 80 name: http targetPort: 80 clusterIP: None # 关键：声明这是一个Headless Service，不分配Cluster IP selector: app: web---------------------------------------------
CKA题目分享-第二篇-存储
CKA题目分享-第五篇-Pod Security与Taints Tolerations
CKA题目分享-第六篇-CoreDNS与Helm
