*RECLAIMING A PV* this is a scenario I've run into and which wasn't covered in . . .

Kubernetes
#1

OE:
RECLAIMING A PV

this is a scenario I’ve run into and which wasn’t covered in the course and I’m pretty sure others have as well. You have a PV that is bound to a PVC and you then want to

• detach it from the PVC because you created the PVC in the wrong namespace
• reuse the PV because the pod that was using it is no longer using it
in either case, the solution is easy. Just edit the pv:

$ k edit pv pv-1

and then delete the claimRef section highlighted below. You’ll then be able to bind it to another PVC

pv.png
pv.png620×688 55.3 KB

#2

Hsinhom:
why not just delete the pvc from the wrong namespace?

#3

OE:
Deleting the PVC doesn’t make the PV available. You have to manually edit the PV to make it usable again

#4

Daniel Zilberman:
@OE to be fair, that behavior (releasing PV from PVC that “claimed” some of its resources) is also controlled by reclaim policy, as illustrated here: https://kubernetes.io/docs/tasks/administer-cluster/change-pv-reclaim-policy/. Perhaps “Recycle” reclaim policy would work for your scenario? I recall that in the course labs we had to first delete pod that uses PVC as a Volume and then delete PVC itself so that PV resource was available again…

#5

OE:
Even when you delete the pod + PVC, if the policy is recycle, the PV is not available. Test it out and tell me. But from what I looked at it, you had to manually remove the claim even after deleting the PVC + pod