Kubernetes的存储体系为有状态应用提供数据持久化能力。 ## PV与PVC ```yaml apiVersion: v1 kind: PersistentVolume metadata: name: nfs-pv spec: capacity: storage: 10Gi accessModes: - ReadWriteMany nfs: server: nfs-server.default.svc.cluster.local path: /data ``` ## StorageClass ```yaml apiVersion: storage.k8s.io/v1 kind: StorageClass metadata: name: fast-ssd provisioner: pd.csi.storage.gke.io parameters: type: pd-ssd volumeBindingMode: WaitForFirstConsumer allowVolumeExpansion: true ``` ## StatefulSet ```yaml apiVersion: apps/v1 kind: StatefulSet metadata: name: mysql spec: serviceName: mysql replicas: 3 volumeClaimTemplates: - metadata: name: data spec: accessModes: ["ReadWriteOnce"] storageClassName: fast-ssd resources: requests: storage: 50Gi ``` 选择存储方案时需考虑：性能、可用性、成本和数据一致性要求。