Kubernetes - Persistent Volumes 🏰

Description 👀

Persistent Volumes are a way to store data in a pod that will persist even if the pod is destroyed. Persistent Volumes are also a way to share data between pods. Persistent Volumes are a resource that is independent of the pod lifecycle. This means that Persistent Volumes can be created, used, and destroyed independently of the pod lifecycle.

Examples 🧩

• persistent volume definition

    apiVersion: v1
    kind: PersistentVolume
    metadata:
        name: pv-vol1
    spec:
        # access mode defines how the volume should be mounted on the host
        accessModes:
          - ReadWriteOnce
        capacity:
            storage: 1Gi
        # host path is the path on the host where the volume will be mounted, there are other types of volumes
        hostPath:
            path: /tmp/dat
  

• pv to be added on in pvc section

  apiVersion: v1
  kind: PersistentVolume
  metadata:
    name: pv-log
  spec:
    accessModes:
      - ReadWriteOnce
    persistentVolumeReclaimPolicy: Retain
    capacity:
      storage: 100Mi
    hostPath:
      path: /pv/log
  

  • supported access modes are
    • ReadOnlyMany
    • ReadWriteMany
    • ReadWriteOnce

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