前提条件：
k8s集群（已搭建好）
nfs服务器（已搭建好）
nfs客户端（pod可调度节点作为客户端，已搭建好）
Kubernetes 推荐使用 PersistentVolume (PV) 和 PersistentVolumeClaim (PVC) 来管理存储。
静态PV配置
该方法需要管理员手动配置PV
#测试pod使用nfs存储
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: nfs-pv
namespace: test-ng
spec:
capacity:
storage: 1Gi # 你想要的存储大小
accessModes:
- ReadWriteMany # 允许多个节点读写
nfs:
path: /data/k8s_nfs # NFS 共享的路径
server: x.x.x.x # NFS 服务器地址
persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: nfs-pvc
namespace: test-ng
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nfsdemo-v1
namespace: test-ng
labels:
app: nfsdemo
version: v1
spec:
replicas: 1
selector:
matchLabels:
app: nfsdemo
version: v1
template:
metadata:
labels:
app: nfsdemo
version: v1
spec:
containers:
- name: nfsdemo
image: swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/nginx:stable-alpine
ports:
- containerPort: 80
volumeMounts:
- name: nfs-storage
mountPath: "/usr/share/nginx/html"# 容器内的挂载路径
volumes:
- name: nfs-storage
persistentVolumeClaim:
claimName: nfs-pvc
---
apiVersion: v1
kind: Service
metadata:
name: nfsdemo-service
namespace: test-ng
spec:
type: NodePort # 设置为 NodePort 类型
selector:
app: nfsdemo # 与 Deployment 中的 Pod 匹配的标签
ports:
- port: 80 # 服务的端口
targetPort: 80 # Pod 中容器的端口动态PV配置
该方法无需手动创建 PV，当用户创建 PVC 时，自动创建对应的 PV。
这需要部署一个 NFS Subdir External Provisioner（例如 nfs-subdir-external-provisioner Helm Chart）。这个 Provisioner 会监视 PVC 的创建，并自动在指定的 NFS 共享目录下创建以命名空间和 PVC 名称命名的子目录作为新的 PV。
使用helm配置
使用helm添加nfs-subdir-external-provisioner
$ helm repo add nfs-subdir-external-provisioner https://kubernetes-sigs.github.io/nfs-subdir-external-provisioner/
$ helm install nfs-subdir-external-provisioner nfs-subdir-external-provisioner/nfs-subdir-external-provisioner \
--set nfs.server=x.x.x.x \
--set nfs.path=/data/k8s_nfs卸载 nfs-subdir-external-provisioner
helm uninstall nfs-subdir-external-provisioner动态PV测试
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: test-claim
spec:
storageClassName: "nfs-sc"
accessModes:
- ReadWriteMany
resources:
requests:
storage: 1Gi
---
apiVersion: v1
kind: Pod
metadata:
name: test-pod
spec:
containers:
- name: test-pod
image: swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/nginx:stable-alpine
volumeMounts:
- name: nfs-pvc
mountPath: "/usr/share/nginx/html"
volumes:
- name: nfs-pvc
persistentVolumeClaim:
claimName: test-claim
