Useful Resources: Persistent Volumes & Claim
题干
For this question, please set this context (In exam, diff cluster name)
kubectl config use-context kubernetes-admin@kubernetes
Create a PersistentVolume (PV) and a PersistentVolumeClaim (PVC) using an existing storage class named gold-stc-cka to meet the following requirements:
Step 1: Create a Persistent Volume (PV)
- Name the PV as gold-pv-cka .
- Set the capacity to 50Mi .
- Use the volume type hostpath with the path /opt/gold-stc-cka .
- Assign the storage class as gold-stc-cka .
- Ensure that the PV is created on node01 , where the /opt/gold-stc-cka directory already exists.
- Apply a label to the PV with key tier and value white .
Step 2: Create a Persistent Volume Claim (PVC)
- Name the PVC as gold-pvc-cka .
- Request 30Mi of storage from the PV gold-pv-cka using the matchLabels criterion.
- Use the gold-stc-cka storage class.
- Set the access mode to ReadWriteMany .
使用现有的存储类
gold-stc-cka创建一个PersistentVolume(PV)和一个persistentvolumecclaim(PVC)，以满足以下要求:
步骤1:创建持久卷(PV)
- 将PV命名为
gold-pv-cka。- 设置容量为50Mi。
- 使用卷类型的主机路径，路径为
/opt/gold-stc-cka。- 将存储类指定为
gold-stc-cka。- 确保PV创建在node01上，且
/opt/gold-stc-cka目录已经存在。- 对关键层和值为白色的PV应用标签。
步骤2:创建持久容量声明(PVC)
- 将PVC命名为
gold-pvc-cka。- 使用
matchLabels标准从PVgold-pv-cka请求30Mi的存储空间。- 使用
gold-stc-cka存储类。- 设置读写模式为“读写多”。
解题思路
- 切换k8s集群环境
kubectl config use-context kubernetes-admin@kubernetes
- 创建一个PV资源，资源清单如下
apiVersion: v1
kind: PersistentVolume
metadata:
labels:
tier: white
name: gold-pv-cka
spec:
nodeAffinity:
required:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- node01
storageClassName: gold-stc-cka
capacity:
storage: 50Mi
accessModes:
- ReadWriteMany
hostPath:
path: "/opt/gold-stc-cka"
提交PV资源清单，并查看创建情况
persistentvolume/gold-pv-cka created
controlplane $ k get pv -o wide
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS VOLUMEATTRIBUTESCLASS REASON AGE VOLUMEMODE
gold-pv-cka 50Mi RWX Retain Available gold-stc-cka <unset> 5s Filesystem
- 按照题目的要求创建PVC，资源清单如下
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: gold-pvc-cka
spec:
selector:
matchLabels:
tier: white
storageClassName: gold-stc-cka
accessModes:
- ReadWriteMany
resources:
requests:
storage: 30Mi
提交PV资源清单，并查看创建情况
controlplane $ k apply -f pvc.yaml
persistentvolumeclaim/gold-pvc-cka created
controlplane $ k get pvc
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS VOLUMEATTRIBUTESCLASS AGE
gold-pvc-cka Bound gold-pv-cka 50Mi RWX gold-stc-cka <unset> 17s
