Persistent Volumes

Question 1

What is the main reason to use persistent volumes instead of defining volumes inside every pod spec?

Answer 1

Persistent volumes centralize storage management so users do not need to repeat storage configuration in every pod and changes do not require editing many pod definitions.

Question 2

What is a persistent volume in Kubernetes?

Answer 2

A persistent volume is a cluster wide storage resource created and managed by an administrator that applications can use through claims.

Question 3

How do users request or carve out storage from the persistent volume pool?

Answer 3

Users create persistent volume claims which select and bind to available persistent volumes.

Question 4

What key fields are defined in a persistent volume spec in the lecture example?

Answer 4

The example defines accessModes capacity and a volume type such as hostPath.

Question 5

Why is hostPath used only as a simple example and not recommended for production?

Answer 5

hostPath relies on a local node directory and is not suitable for reliable multi node production storage.