3.8. Persistent storage using hostPath

Procedure

1. Define the persistent volume (PV). Create a file, pv.yaml, with the PersistentVolume object definition:

     apiVersion: v1
     kind: PersistentVolume
     metadata:
       name: task-pv-volume 

   1

   
       labels:
         type: local
     spec:
       storageClassName: manual 

   2

   
       capacity:
         storage: 5Gi
       accessModes:
         - ReadWriteOnce 

   3

   
       persistentVolumeReclaimPolicy: Retain
       hostPath:
         path: "/mnt/data" 

   4

   1

   The name of the volume. This name is how it is identified by persistent volume claims or pods.

   2

   Used to bind persistent volume claim requests to this persistent volume.

   3

   The volume can be mounted as read-write by a single node.

   4

   The configuration file specifies that the volume is at /mnt/data on the cluster’s node.

2. Create the PV from the file:

   $ oc create -f pv.yaml

3. Define the persistent volume claim (PVC). Create a file, pvc.yaml, with the PersistentVolumeClaim object definition:

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: task-pvc-volume
   spec:
     accessModes:
       - ReadWriteOnce
     resources:
       requests:
         storage: 1Gi
     storageClassName: manual

4. Create the PVC from the file:

   $ oc create -f pvc.yaml