Kubernetes·Kubernetes from first pod to production app

Storage

Choose ephemeral, persistent and shared storage deliberately.

Intermediate 14 min read Lesson 7 of 300 Challenge included

What you will be able to do

Use emptyDir for scratch space.
Use a PVC for durable storage.
Use StatefulSets for stable identities.
Back up state, not just YAML.

In plain English

Container filesystems disappear with the pod. PersistentVolumes and PersistentVolumeClaims give durable storage. StatefulSets give stable identities for databases, which is why they exist.

pvc.yamlYAML

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: data
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi

Your turn

Request 5Gi

Easy

Write a PVC request for 5Gi with ReadWriteOnce access.

YAML · starter

resources: {}

Check your understanding before moving on.

Knowledge checkQuestion 1

Which object gives a database pod a stable identity?

Select an answer to continue

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Lesson 7 of 300 · 0% of course