Mastering Kubernetes - Second Edition

Demonstrating persistent volume storage end to end

To illustrate all the concepts, let's do a mini-demonstration where we create a HostPath volume, claim it, mount it, and have containers write to it.

Let's start by creating a hostPath volume. Save the following in persistent-volume.yaml:

kind: PersistentVolumeapiVersion: v1metadata:  name: persistent-volume-1spec:  StorageClassName: dir  capacity:    storage: 1Gi  accessModes:    - ReadWriteOnce  hostPath:    path: "/tmp/data"> kubectl create -f persistent-volume.yamlpersistentvolume "persistent-volume-1" created

To check out the available volumes, you can use the persistentvolumes resource type, or pv for short:

> kubectl get pv
NAME:             persistent-volume-1                  
CAPACITY:         1Gi
ACCESS MODES:     RWO   
RECLAIM POLICY: ...