1.將/registry數據導出
mkdir /export/registry_bak
oc get pods 
docker-registry-2-4qcr6

[root@master1 registry_bak]# oc rsync docker-registry-1-91s28:/registry .
2.使用NFS,創建pv和pvc

 mkdir -p /export/pv/docker_registry

yum install nfs-utils rpcbind -y

chown -R nfsnobody:nfsnobody /export/pv/

systemctl restart rpcbind
[root@master1 ~]# systemctl enable rpcbind

exportfs -r

systemctl restart nfs-server

 echo "/export/pv/docker_registry/  *(rw,sync,all_squash)" >> /etc/exports

 mkdir /opt/pv/

[root@master1 ~]# setenforce 0
3.創建pv

[root@master1 pv]# cat pv.json 
{
  "apiVersion": "v1",
  "kind": "PersistentVolume",
  "metadata": {
    "name": "registrypv"
  },
  "spec": {
    "capacity": {
      "storage": "100Gi"
    },
    "accessModes": [ "ReadWriteOnce" ],
    "nfs": {
      "path": "/export/pv/docker_registry",
      "server": "192.168.10.110"
    },
    "persistentVolumeReclaimPolicy": "Retain"
  }
}

[root@master1 pv]# oc create -f pv.json 
persistentvolume "registrypv" created
給pv添加標簽

[root@master1 pv]# oc label pv registrypv disktype=registry
4.創建PVC

[root@master1 pv]# cat registry_pvc.json 
{
  "apiVersion": "v1",
  "kind": "PersistentVolumeClaim",
  "metadata": {
    "name": "docker-registry-claim"
  },
  "spec": {
    "accessModes": [
      "ReadWriteOnce"
    ],
    "selector": {
      "matchLabels": {
        "disktype": "registry"
      }
    },
    "resources": {
      "requests": {
        "storage": "100Gi"
      }
    }
  }
}

[root@master1 pv]# oc create -f registry_pvc.json 
persistentvolumeclaim "docker-registry-claim" created
6.將備份的數據恢復到創建的NFS目錄  #########################關鍵地點---registry目錄下的./*  --> 
 

[root@master1 ~]# cd /export/
[root@master1 export]# mv registry_bak/registry/* pv/docker_registry/
[root@master1 export]# ls pv/docker_registry/
docker
[root@master1 export]# chown -R nfsnobody:nfsnobody /export/
7.為registry添加持久化卷請求，並與掛載點關聯

oc volumes dc/docker-registry --add --name=registry-storage -t pvc --claim-name=docker-registry-claim --overwrite
參考：https://www.cnblogs.com/dukuan/p/8735017.html

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