[20] Persistent Volume Claim을 사용하는 Pod 운영

❓Application with Persistent Volume Claim

Create a new PersistentVolumeClaim

Name: app-volume

Storage Class: app-hostpath-sc

Capacity: 10Mi

Create a new pod which mounts the PersistentVolumeClaim as a volume

Name: web-server-pod

Image: nginx

Mount Path: /usr/share/nginx/html

Configure the new pod to have ReadWriteMany access on the volume.

작업 클러스터: k8s

Reference

docs에서 persistent volume 검색 후 → PersistentVolumeClaim부분

Persistent Volumes

docs에서 persistent volume 검색 후 → claims as volumes

Persistent Volumes

실습

[user@console ~]$ kubectl config use-context k8s

[user@console ~]$ vi app-volume-pvc.yaml

#docs에서 Persistent volume 검색 후 PersistentVolumeClaims 부분 긁어옴

apiVersion: v1

kind: PersistentVolumeClaim

metadata:

 name: app-volume

spec:

 accessModes:

 - ReadWriteMany

 volumeMode: Filesystem

 resources:

 requests:

 storage: 10Mi

 storageClassName: app-hostpath-sc

:wq

[user@console ~]$ kubectl apply -f app-volume-pvc.yaml

[user@console ~]$ kubectl get pvc 

[user@console ~]$ vi web-server-pod.yaml

#docs에서 persistent volume 검색 -> Claims as volumes 부분 긁어옴

apiVersion: v1

kind: Pod

metadata:

 name: web-server-pod

spec:

 containers:

 - name: nginx

 image: nginx

 volumeMounts:

 - mountPath: "/usr/share/nginx/html"

 name: mypd

 volumes:

 - name: mypd

 persistentVolumeClaim:

 claimName: app-volume

 

:wq

[user@console ~]$ kubectl apply -f web-server-pod.yaml

[user@console ~]$ kubectl get pods

[user@console ~]$ kubectl describe pod web-server-pod

기출문제 (61번)

kubectl config use-context k8s Create a new PersistentVolumeClaim:

Name: pv-volume

Class: app-hostpath-sc

Capacity: 10Mi Create a new Pod which mounts the PersistentVolumeClaim as a volume: Name: web-server-pod Image: nginx Mount path: /usr/share/nginx/html Configure the new Pod to have ReadWriteMany access on the volume. Finally, using kubectl edit or kubectl patch expand the PersistentVolumeClaim to a capacity of 70Mi and record that change.

답안

기출문제 (13번)

List all persistent volumes sorted by capacity, saving the full kubectl output to /opt/KUCC00102/volume_list.

Use kubectl 's own functionality for sorting the output, and do not manipulate it any further

답안

kubectl get pv --sort-by=.spec.capacity.storage > /opt/KUCC00102/volume_list

기출문제 (16번)

Create a persistent volume with name app-data, of capacity 2Gi and access mode ReadWriteMany.

The type of volume is hostPath and its location is /srv/app-data.

답안

vi pv.yaml

apiVersion: v1

kind: PersistentVolume

metadata:

 name: app-data

spec:

 capacity:

 storage: 2Gi

 volumeMode: Filesystem

 accessModes:

 - ReadWriteMany

 persistentVolumeReclaimPolicy: Recycle

 storageClassName: slow

 hostPath:

 path: /srv/app-data

:wq

kubectl apply -f pv.yaml

기출문제 (55번)

Task Create a persistent volume with name app-data , of capacity 1Gi and access mode ReadOnlyMany. The type of volume is hostPath and its location is /srv/app-data .

답안

vi pv.yaml

apiVersion: v1

kind: PersistentVolume

metadata:

 name: app-data

spec:

 capacity:

 storage: 1Gi

 volumeMode: Filesystem

 accessModes:

 - ReadOnlyMany

 persistentVolumeReclaimPolicy: Recycle

 storageClassName: slow

 hostPath:

 path: /srv/app-data

:wq

kubectl apply -f pv.yaml