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dc4ca2015e
The deploy link in the README is broken. Fixed more broken links requested by iPraveenParihar in #4958 Signed-off-by: 尤理衡 (Li-Heng Yu) <007seadog@gmail.com>
114 lines
2.8 KiB
Markdown
114 lines
2.8 KiB
Markdown
# Stale Resource Cleanup
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If the PVC is created with storage class which is having the `reclaimPolicy`
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as `Retain` will not delete the PV object, backend omap metadata and backend image.
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Manual deletion of PV will result in stale omap keys, values,
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cephFS subvolume and rbd image.
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It is required to cleanup metadata and image separately.
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## Steps
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### 1. Get PV name from PVC
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a. get pv_name
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```
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kubectl get pvc pvc_name -n namespace -owide
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```
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```bash
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$ kubectl get pvc mysql-pvc -owide -n prometheus
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NAME STATUS VOLUME
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mysql-pvc Bound pvc-bc537af8-67fc-4963-99c4-f40b3401686a
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CAPACITY ACCESS MODES STORAGECLASS AGE VOLUMEMODE
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20Gi RWO csi-rbd 14d Filesystem
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```
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### 2. Get omap key/value
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a. get omapkey (suffix of csi.volumes.default is value used for the CLI option
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[--instanceid](rbd/deploy.md#configuration) in the provisioner deployment.)
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```
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rados listomapkeys csi.volumes.default -p pool_name | grep pv_name
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```
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```bash
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$ rados listomapkeys csi.volumes.default -p kube_csi | grep pvc-bc537af8-67fc-4963-99c4-f40b3401686a
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csi.volume.pvc-bc537af8-67fc-4963-99c4-f40b3401686a
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```
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b. get omapval
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```
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rados getomapval csi.volumes.default omapkey -p pool_name
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```
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```bash
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$ rados getomapval csi.volumes.default csi.volume.pvc-bc537af8-67fc-4963-99c4-f40b3401686a -p kube_csi
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value (36 bytes) :
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00000000 64 64 32 34 37 33 64 30 2d 36 61 38 63 2d 31 31 |dd2473d0-6a8c-11|
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00000010 65 61 2d 39 31 31 33 2d 30 61 64 35 39 64 39 39 |ea-9113-0ad59d99|
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00000020 35 63 65 37 |5ce7|
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00000024
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```
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### 3. Delete the RBD image or CephFS subvolume
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a. remove rbd image(csi-vol-omapval, the prefix csi-vol is value of [volumeNamePrefix](rbd/deploy.md#configuration))
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```
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rbd remove rbd_image_name -p pool_name
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```
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```bash
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$ rbd remove csi-vol-dd2473d0-6a8c-11ea-9113-0ad59d995ce7 -p kube_csi
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Removing image: 100% complete...done.
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```
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b. remove cephFS subvolume(csi-vol-omapval)
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```
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ceph fs subvolume rm volume_name subvolume_name group_name
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```
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```bash
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ceph fs subvolume rm cephfs csi-vol-340daf84-5e8f-11ea-8560-6e87b41d7a6e csi
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```
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### 4. Delete omap object and omapkey
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a. delete omap object
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```
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rados rm csi.volume.omapval -p pool_name
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```
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```bash
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rados rm csi.volume.dd2473d0-6a8c-11ea-9113-0ad59d995ce7 -p kube_csi
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```
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b. delete omapkey
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```
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rados rmomapkey csi.volumes.default csi.volume.omapkey -p pool_name
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```
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```bash
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rados rmomapkey csi.volumes.default csi.volume.pvc-bc537af8-67fc-4963-99c4-f40b3401686a -p kube_csi
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```
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### 5. Delete PV
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a. delete pv
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```
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kubectl delete pv pv_name -n namespace
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```
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```bash
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$ kubectl delete pv pvc-bc537af8-67fc-4963-99c4-f40b3401686a -n prometheus
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persistentvolume "pvc-bc537af8-67fc-4963-99c4-f40b3401686a" deleted
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```
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