回收PVGraph

Nebula Operator使用持久化卷PV（Persistent Volume）和持久化卷声明PVC（Persistent Volume Claim）来存储持久化数据。如果用户不小心删除了一个NebulaGraph集群，PV和PVC对象及其数据仍可保留，以确保数据安全。

用户可以在集群的CR实例的配置文件中通过参数enablePVReclaim定义是否回收PV。

如果用户需要删除图空间并想保留相关数据，可以更新NebulaGraph集群，即设置enablePVReclaim为true。

前提条件Graph

已使用K8s创建一个集群。具体步骤，参见Graph。

操作步骤Graph

以下示例使用名为nebula的集群说明如何设置enablePVReclaim：

1. 执行以下命令进入nebula集群的编辑页面。

   kubectl edit nebulaclusters.apps.nebula-graph.io nebula
   

2. 在YAML文件的spec配置项中，添加enablePVReclaim并设置其值为true。

   apiVersion: apps.nebula-graph.io/v1alpha1
   kind: NebulaCluster
   metadata:
     name: nebula
   spec:
     enablePVReclaim: true  //设置其值为true。
     graphd:
       image: vesoft/nebula-graphd
       logVolumeClaim:
         resources:
           requests:
             storage: 2Gi
         storageClassName: fast-disks
       replicas: 1
       resources:
         limits:
           cpu: "1"
           memory: 1Gi
         requests:
           cpu: 500m
           memory: 500Mi
       version: v2.6.0
     imagePullPolicy: IfNotPresent
     metad:
       dataVolumeClaim:
         resources:
           requests:
             storage: 2Gi
         storageClassName: fast-disks
       image: vesoft/nebula-metad
       logVolumeClaim:
         resources:
           requests:
             storage: 2Gi
         storageClassName: fast-disks
       replicas: 1
       resources:
         limits:
           cpu: "1"
           memory: 1Gi
         requests:
           cpu: 500m
           memory: 500Mi
       version: v2.6.0
     nodeSelector:
       nebula: cloud
     reference:
       name: statefulsets.apps
       version: v1
     schedulerName: default-scheduler
     storaged:
       dataVolumeClaim:
         resources:
           requests:
             storage: 2Gi
         storageClassName: fast-disks
       image: vesoft/nebula-storaged
       logVolumeClaim:
         resources:
           requests:
             storage: 2Gi
         storageClassName: fast-disks
       replicas: 3
       resources:
         limits:
           cpu: "1"
           memory: 1Gi
         requests:
           cpu: 500m
           memory: 500Mi
       version: v2.6.0
   ...