Difference between revisions of "Kubernetes Persistent Volumes (PV)"

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Kubernetes Persistent Volumes subsystem provides an API for users and administrators that abstracts details of how storage is provided from how it is consumed
 
Kubernetes Persistent Volumes subsystem provides an API for users and administrators that abstracts details of how storage is provided from how it is consumed
 
* https://kubernetes.io/docs/concepts/storage/persistent-volumes/
 
* https://kubernetes.io/docs/concepts/storage/persistent-volumes/
 +
* https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.29/#persistentvolume-v1-core
 
__NOTOC__
 
__NOTOC__
 
* <code>[[kubectl get pvc]]</code>
 
* <code>[[kubectl get pvc]]</code>

Revision as of 12:26, 8 February 2024

TOMERGE: Kubernetes Persistent volumes

Kubernetes Persistent Volumes subsystem provides an API for users and administrators that abstracts details of how storage is provided from how it is consumed

Volumes:
VolumeMounts:
ExtraVolumes

Examples

 volumes:
 your-vol-1:
   Type:      ConfigMap (a volume populated by a ConfigMap)
   Name:      prod-admin-config
   Optional:  false
 your-vol-2:
   Type:        Secret (a volume populated by a Secret)
   SecretName:  your-secret-name
   Optional:    false
 your-vol-3:
   Type:                    Projected (a volume that contains injected data from multiple sources)
   TokenExpirationSeconds:  3607
   ConfigMapName:          your-kube-root-ca.crt
   ConfigMapOptional:       <nil>
   DownwardAPI:             true
apiVersion: v1
kind: Pod
metadata:
  name: mypod
spec:
  containers:
    - name: myfrontend
      image: nginx
      volumeMounts:
      - mountPath: "/var/www/html"
        name: mypd
  volumes:
    - name: mypd
      persistentVolumeClaim:
        claimName: myclaim



spec:
  volumes:
    - name: elasticsearch-master
      persistentVolumeClaim:
        claimName: elasticsearch-master-elasticsearch-master-0
    - name: mynewvolumen
      emptyDir: {}

Providers

Error

error: error validating "yourpv": error validating data: 
ValidationError(PersistentVolume.spec.csi): missing required field "volumeHandle" in 
io.k8s.api.core.v1.CSIPersistentVolumeSource; if you choose to ignore these errors, turn 
validation off with --validate=false

Metrics

kubelet_volume_stats_available_bytes
kubelet_volume_stats_capacity_bytes
kubelet_volume_stats_inodes
kubelet_volume_stats_inodes_free
kubelet_volume_stats_inodes_used
kubelet_volume_stats_used_bytes

Ref: https://stackoverflow.com/questions/44718268/how-to-monitor-disk-usage-of-kubernetes-persistent-volumes

News

  • Jun 2018 v1.11 Resizing Persistent Volumes using Kubernetes in alpha

CKA

Activities

Related terms

See also

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