[k8s] Persistent Volume

 

 

1. PV ( Persistent Volume ) 란?

Persistent Volume (PV)은 Kubernetes의 스토리지 추상화로, 이를 사용하는 pod 에서 storage 구성을 분리할 수 있습니다.
Persistent Volume 은 Cluster 관리자가 동적으로 프로비저닝하거나 정적으로 구성할 수 있는 클러스터 전체 리소스입니다. Pod 와 Storage 백엔드 사이에 추상화 계층을 제공하여 애플리케이션의 유연성과 이식성을 높일 수 있습니다.

 

2. Pv 예제

Persistent Volume 구성해보기

* Create a persistent volume with name app-config, of capacity 1Gi and access mode ReadWriteMany
* StorageClass: az-c
* The type of volume is hostPath and its location is /srv/app-config

 

apiVersion: v1
kind: PersistentVolume
metadata:
  name: app-config
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteMany
  storageClassName: az-c
  hostPath:
    path: /srv/app-config
    type: Directory

 

3. 결과

root@k8s-master:~/cka30# kubectl apply -f 19.yaml 
persistentvolume/app-config created
root@k8s-master:~/cka30# kubectl get pv
NAME             CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS      CLAIM   STORAGECLASS   REASON   AGE
app-config       1Gi        RWX            Retain           Available           az-c                    4s

 

 

https://kubernetes.io/docs/concepts/storage/persistent-volumes/

Persistent Volumes