如何在 Kubernetes(k8s) 中配置和使用 GlusterFS 存储作为 PersistentVolume？

先在k8s集群外搭好GlusterFS存储集群，记下节点IP和卷名。然后在k8s里创建Endpoints和Service指向GlusterFS节点，接着写个PersistentVolume配置文件，指定glusterfs的路径和endpoints名称。再搞个PersistentVolumeClaim来绑定这个PV。最后在Pod配置里通过volumeClaimName调用就完事了。注意要装好glusterfs客户端，挂载时保持长连接别断嗷！

1. 准备GlusterFS集群：确保GlusterFS集群已部署且卷（如gv0）创建完成。

2. 安装依赖：在所有Kubernetes节点安装glusterfs-client：

   apt-get install glusterfs-client  # Debian/Ubuntu
   yum install glusterfs-fuse        # CentOS/RHEL

3. 创建Endpoint/Service：定义GlusterFS节点IP（替换为实际IP）:

   apiVersion: v1
   kind: Endpoints
   metadata:
    name: glusterfs-cluster
   subsets:
    - addresses:
        - ip: 10.0.0.1
        - ip: 10.0.0.2
      ports:
        - port: 49152  # GlusterFS默认端口
   ---
   apiVersion: v1
   kind: Service
   metadata:
    name: glusterfs-cluster
   spec:
    ports:
    - port: 49152

4. 创建PersistentVolume（静态配置）：

   apiVersion: v1
   kind: PersistentVolume
   metadata:
    name: gluster-pv
   spec:
    capacity:
      storage: 10Gi
    accessModes:
      - ReadWriteMany
    glusterfs:
      endpoints: glusterfs-cluster
      path: gv0               # GlusterFS卷名称
      readOnly: false
    persistentVolumeReclaimPolicy: Retain

5. 创建PersistentVolumeClaim：

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
    name: gluster-pvc
   spec:
    accessModes:
      - ReadWriteMany
    resources:
      requests:
        storage: 10Gi

6. 挂载到Pod：

   apiVersion: v1
   kind: Pod
   metadata:
    name: app-pod
   spec:
    containers:
      - name: app
        image: nginx
        volumeMounts:
          - mountPath: /data
            name: gluster-storage
    volumes:
      - name: gluster-storage
        persistentVolumeClaim:
          claimName: gluster-pvc

验证：进入Pod写入文件，检查GlusterFS卷中是否持久化数据。

在Kubernetes中配置GlusterFS作为PersistentVolume的步骤如下：

1. 部署GlusterFS集群

   • 安装GlusterFS节点并创建存储卷（如gluster volume create vol01 replica 3 server1:/data server2:/data server3:/data）

2. 安装Heketi（可选）

   • 使用Heketi自动化存储管理，通过Kubernetes部署Heketi Service及API端点

3. 创建StorageClass（动态供给）

   apiVersion: storage.k8s.io/v1
   kind: StorageClass
   metadata:
    name: glusterfs-sc
   provisioner: kubernetes.io/glusterfs
   parameters:
    resturl: "http://heketi-service.default:8080"
    restauthenabled: "false"

4. 手动创建PV/PVC（静态供给）

   apiVersion: v1
   kind: PersistentVolume
   metadata:
    name: gluster-pv
   spec:
    capacity:
      storage: 10Gi
    accessModes:
      - ReadWriteMany
    glusterfs:
      endpoints: "glusterfs-cluster"
      path: "vol01"
      readOnly: false

5. 创建PVC绑定

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
    name: gluster-pvc
   spec:
    storageClassName: ""
    accessModes:
      - ReadWriteMany
    resources:
      requests:
        storage: 10Gi

6. Pod挂载使用

   spec:
    containers:
      - volumeMounts:
        - mountPath: "/data"
          name: gluster-storage
    volumes:
      - name: gluster-storage
        persistentVolumeClaim:
          claimName: gluster-pvc

注意：

• 需提前创建glusterfs端点(Endpoints)指向集群节点
• 多节点访问建议使用ReadWriteMany模式
• Heketi提供REST API实现动态存储分配
• 生产环境应配置TLS认证及资源配额

在Kubernetes中配置GlusterFS作为PersistentVolume，需遵循以下步骤：

1. 前提条件

   • 已部署GlusterFS集群并创建Volume
   • 所有K8s节点安装glusterfs-client

2. 创建Endpoints/Service

   apiVersion: v1
   kind: Endpoints
   metadata:
   name: glusterfs-cluster
   subsets:
   - addresses:
     - ip: 192.168.1.100
   ports:
     - port: 49152
       name: glusterfs
   ---
   apiVersion: v1
   kind: Service
   metadata:
   name: glusterfs-cluster
   spec:
   ports:
   - port: 49152

3. 定义PersistentVolume

   apiVersion: v1
   kind: PersistentVolume
   metadata:
   name: gluster-pv
   spec:
   capacity:
   storage: 10Gi
   accessModes:
   - ReadWriteMany
   glusterfs:
   endpoints: glusterfs-cluster
   path: my_volume
   readOnly: false
   persistentVolumeReclaimPolicy: Retain

4. 创建PersistentVolumeClaim

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
   name: gluster-pvc
   spec:
   accessModes:
   - ReadWriteMany
   resources:
   requests:
     storage: 10Gi

5. Pod挂载使用

   apiVersion: v1
   kind: Pod
   metadata:
   name: app-pod
   spec:
   containers:
   - name: app
     image: nginx
     volumeMounts:
       - mountPath: /data
         name: gluster-volume
   volumes:
   - name: gluster-volume
     persistentVolumeClaim:
       claimName: gluster-pvc

注意事项：

• 确保网络互通，防火墙开放所需端口
• 生产环境建议使用StorageClass动态供给
• 多副本场景建议启用heketi进行集群管理
• 访问模式需与GlusterFS Volume配置匹配