Hey folks, I'm working with a StorageClass in my Kubernetes setup that currently has a reclaimPolicy set to Delete by default. I want to switch it to Retain to prevent any accidental data loss when Persistent Volume Claims (PVCs) are deleted. My main concern is ensuring that I do not lose the data that's already been stored in the existing PVCs associated with this StorageClass. Any advice on how to safely make this change?
2 Answers
You can't directly change the reclaimPolicy of an existing StorageClass, but you can alter the reclaimPolicy on the Persistent Volume (PV) created by it. Just edit the PV and set the reclaimPolicy to Retain; this change won't cause any data loss. It's also a good idea to create a new StorageClass with the desired reclaimPolicy for future use.
Actually, you really just need to edit the PV and switch the reclaimPolicy to Retain. Once you do that, all existing data will be safe, and there's no need to go through complicated data migration processes.
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