kubernetes 实战3_命令_Configure Pods and Containers

configuration file for the hostPath PersistentVolumeConfigure a Pod to Use a PersistentVolume for Storage

how to configure a Pod to use a PersistentVolumeClaim for storage.

Here is a summary of the process:

1. A cluster administrator creates a PersistentVolume that is backed by physical storage. The administrator does not associate the volume with any Pod.

2. A cluster user creates a PersistentVolumeClaim, which gets automatically bound to a suitable PersistentVolume.

3. The user creates a Pod that uses the PersistentVolumeClaim as storage.

Create a PersistentVolume

Kubernetes supports hostPath for development and testing on a single-node cluster.

A hostPath PersistentVolume uses a file or directory on the Node to emulate network-attached storage.

In a production cluster, you would not use hostPath.

Instead a cluster administrator would provision a network resource like a Google Compute Engine persistent disk, an NFS share, or an Amazon Elastic Block Store volume.

Cluster administrators can also use StorageClasses to set up dynamic provisioning.

kind: PersistentVolume
apiVersion: v1
metadata:
  name: task-pv-volume
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"