Cka real test practice (11) create PVC

  Topic Eleven

  Create a new PersistentVolumeClaim:

        Name: pv-volume

        Class: csi-hostpath-sc

        Capacity: 10Mi

======= 

 Create a new Pod that hangs the volume on a PersistentVolumeClaim:

        Name: web-server

        Image: nginx

        Mount path: /usr/share/nginx/html

        Configure a new Pod with ReadWriteOnce permission on the volume   

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 Finally, use kubectl edit or kubectl patch to expand the pvc capacity to 70Mi, and record the changes.

Reference answer:

Open the official document, find the corresponding location, and copy the yaml file 

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: task-pv-claim
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 3Gi

changed to

 after modification

 Next, create a new pod and hang the volume on PersistentVolumeClaim

Open the official document, find the corresponding location, and copy the following yaml file

apiVersion: v1
kind: Pod
metadata:
  name: task-pv-pod
spec:
  volumes:
    - name: task-pv-storage
      persistentVolumeClaim:
        claimName: task-pv-claim
  containers:
    - name: task-pv-container
      image: nginx
      ports:
        - containerPort: 80
          name: "http-server"
      volumeMounts:
        - mountPath: "/usr/share/nginx/html"
          name: task-pv-storage

Revise

 changed

 Finally, use kubectl edit or kubectl patch to expand the pvc capacity to 70Mi, and record the changes

kubectl edit pvc pv-volume --save-config

 just save

Notice

The nfs used in the simulation environment is used as the back-end storage, and does not support dynamic expansion of pvc. The test environment is ok