kubernetes - 在 kubernetes 中找不到持久卷声明

Question

目前我尝试实现 持久卷 在我的 yaml 文件中。
我在互联网上阅读了很多文档，但我不明白为什么当我转到仪表板 Pane 时会收到此消息

persistentvolumeclaim "karaf-conf" not found

pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: karafpod
spec:
  containers:
  - name: karaf
    image: xxx/karaf:ids-1.1.0
    volumeMounts:
    - name: karaf-conf-storage
      mountPath: "/apps/karaf/etc"
  volumes:
    - name: karaf-conf-storage
      persistentVolumeClaim:
        claimName: karaf-conf-claim

PersistentVolumeClaimKaraf.yml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: karaf-conf-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Mi

PersistentVolume.yaml

kind: PersistentVolume
apiVersion: v1
metadata:
  name: karaf-conf
  labels:
    type: local
spec:
  capacity:
    storage: 100Mi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/apps/karaf/etc"

您将在命令的结果下方找到 kubectl 获取光伏

NAME                             CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS        CLAIM                         STORAGECLASS   REASON    AGE
karaf-conf                    100Mi      RWO            Retain           Terminating   default/karaf-conf-claim                            17h
karaf-conf-persistentvolume   100Mi      RWO            Retain           Released      default/karaf-conf                                  1h

kubectl 获取 pvc

NAME                  STATUS        VOLUME          CAPACITY   ACCESS MODES   STORAGECLASS   AGE
karaf-conf-claim   Terminating   karaf-conf   10Mi       RWO            manual         17h

Answer 1

使用 hostPath，您不需要 PersistentVolume 或 PersistentVolumeClaim 对象，因此根据您的需要，这可能会更容易:

# file: pod.yaml
apiVersion: v1
kind: Pod
metadata:
  name: karafpod
spec:
  containers:
  - name: karaf
    image: xxx/karaf:ids-1.1.0
    volumeMounts:
    - name: karaf-conf-storage
      mountPath: "/apps/karaf/etc"  # Path mounted in container

  # Use hostPath here
  volumes:
    - name: karaf-conf-storage
      hostPath:
        path: "/apps/karaf/etc" # Path from the host

然后删除另外两个 .yaml 文件 PersistentVolumeClaimKaraf.yml和 PersistentVolume.yml
官方文档见: https://kubernetes.io/docs/concepts/storage/volumes/#hostpath

编辑:注意到原始帖子中的 spec.containers.VolumeMounts.mountPath 和 spec.containers.volumes.hostPath.path 是相同的，因此在 yaml 中添加了注释以阐明每个的目的。