Cloud Native Programming with Golang

Persistent volumes

Often, you will need a place to store files and data in a persistent way. Since individual Pods are fairly short-lived in a Kubernetes environment, it is usually not a good solution to store files directly in a container's filesystem. In Kubernetes, this issue is solved using persistent volumes, which are basically a more flexible abstraction of the Docker volumes that you have already worked with before.

To create a new persistent volume, create a new example-volume.yaml file with the following contents:

apiVersion: v1 
kind: PersistentVolume 
metadata: 
  name: volume01 
spec: 
  capacity: 
    storage: 1Gi 
  accessModes: 
  - ReadWriteOnce 
  - ReadWriteMany 
  hostPath: 
    path: /data/volume01 

Create the volume using kubectl apply -f example-volume.yaml ...