0175.K delete pv状态状态一直为Terminating解决方法

rundba 2022-06-02

3024

执行delete pv后，pv状态一直为Terminating状态，文中提供解决方法。

0. ENV

kubernetes V1.23.5;

1. 问题现象

执行kubectk delete pv nfs-pv-kuboard-prometheus后，pv状态一直为Terminating状态

[root@rh-master01 ~]# kubectl get pv | grep nfs-pv-kuboard-prometheus
nfs-pv-kuboard-prometheus                40Gi       RWX            Retain           Terminating   kube-system/nfs-pvc-kuboard-prometheus                     nfs-storageclass-provisioner                     2d18h

2. 尝试操作

1) describe pv查看信息

pv状态一直是Terminating，已经持续47h

[root@rh-master01 ~]# kubectl describe pv nfs-pv-kuboard-prometheus
Name:            nfs-pv-kuboard-prometheus
Labels:          <none>
Annotations:     pv.kubernetes.io/bound-by-controller: yes
Finalizers:      [kubernetes.io/pv-protection]            #终结器包含kubernetes.io/pv-protection 
StorageClass:    nfs-storageclass-provisioner
Status:          Terminating (lasts 47h)                  #状态一直为Terminating
Claim:           kube-system/nfs-pvc-kuboard-prometheus
Reclaim Policy:  Retain
Access Modes:    RWX
VolumeMode:      Filesystem
Capacity:        40Gi
Node Affinity:   <none>
Message:         
Source:
    Type:      NFS (an NFS mount that lasts the lifetime of a pod)
    Server:    192.168.80.159
    Path:      /vm/dev-nfs/kuboard_pv/kuboard-prometheus
    ReadOnly:  false
Events:        <none>

2) 使用patch删除记录

使用patch删除记录，但并未匹配信息

[root@rh-master01 ~]# kubectl patch pv nfs-pv-kuboard-prometheus -p ‘{“metadata”:{“finalizers”:null}}’
Error from server (BadRequest): json: cannot unmarshal string into Go value of type map[string]interface {}

3. 问题原因

当 PV 对象的状态为 Terminating 且其 Finalizers 列表中包含 kubernetes.io/pv-protection 时，PV 对象是处于被保护状态的。

4. 问题解决

注释pv的终结器(Finalizers)的状态，解除PV保护状态

[root@rh-master01 ~]# kubectl edit pv nfs-pv-kuboard-prometheus
      4 #
      5 apiVersion: v1
      6 kind: PersistentVolume
      7 metadata:
      8   annotations:
      9     pv.kubernetes.io/bound-by-controller: "yes"
     10   creationTimestamp: "2022-05-24T13:33:40Z"
     11   deletionGracePeriodSeconds: 0
     12   deletionTimestamp: "2022-05-25T08:17:12Z"
     13   finalizers:
     14 #  - kubernetes.io/pv-protection      #注释改行，关闭pv的保护模式
     15   name: nfs-pv-kuboard-prometheus
     16   resourceVersion: "10338089"

再次查看，pv已经消失

[root@rh-master01 ~]# kubectl get pv | grep nfs-pv-kuboard-prometheus
[root@rh-master01 ~]#

5. 参考

https://kubernetes.io/zh/docs/concepts/storage/persistent-volumes

delete pv

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0175.K delete pv状态状态一直为Terminating解决方法

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