[CKA] - Persistent Volume Claim 사용하는 Pod 운영

[선수 작업]

kubectl config set-context k8s --user=kubernetes-admin --cluster=kubernetes

mkdir -p /srv/pv{1,2}

echo "/srv/pv1/index.html" > /srv/pv1/index.html
echo "/src/pv2/index.html" > /srv/pv2/index.html

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv1
spec:
  capacity:
    storage: 10Mi
  accessModes:
    - ReadWriteMany
  storageClassName: app-hostpath-sc
  hostPath:
    path: /srv/pv1
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv2
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteMany
  storageClassName: app-hostpath-sc
  hostPath:
    path: /srv/pv2
EOF

 

---

 

[문제]

• 작업 클러스터: k8s
• Create a new PersistentVolumeClaim:
  • Name: app-volume
  • StorageClass: 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.

---

 

[풀이]

kubectl config use-context k8s

* k8s 클러스터 사용

 

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: app-volume
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 10Mi
  storageClassName: app-hostpath-sc

* yaml 파일로 PersistantVolumeClaim 작성

 

kubectl apply -f app-config-pv.yaml

* yaml 파일 실행

 

kubectl get pvc

* pvc 확인

 

pvc 확인

 

apiVersion: v1
kind: Pod
metadata:
  name: web-server-pod
spec:
  containers:
    - name: myfrontend
      image: nginx
      volumeMounts:
      - mountPath: "/usr/share/nginx/html"
        name: mypd
  volumes:
    - name: mypd
      persistentVolumeClaim:
        claimName: app-volume

* yaml 파일로 Pod 작성

 

kubectl apply -f app-config-pod.yaml

* yaml 파일 실행

 

kubectl describe pods web-server-pod

* Pod 확인

 

mount 정보 확인

 

---

[참고]

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