Cluster storage

The Storage tab of a cluster shows where the cluster's disk space goes: every persistent volume, how full it is, which app service uses it, and how much each storage class holds. Open it from Clusters > [Cluster] > Storage.

The tab is available on managed Kubernetes and K3S clusters. Wodby Cloud and serverless clusters don't have it. The tab only shows information; to change a volume, open its app service.

Volumes

Storage > Volumes starts with an overview of the whole cluster:

• number of volumes
• requested space
• used space, and how many volumes reported it
• volumes that are 85% full or more
• volumes that no running pod mounts

Below it, the volumes are listed by app environment. Each app environment is shown once for all of its volumes.

Column	What it shows
App environment	The app environment the volume belongs to. Volumes outside app environments show Infrastructure for Wodby's cluster components such as monitoring, System for Kubernetes system volumes, or Other, including a volume whose app service no longer exists
App service	The app service and its volume. Open it to see the volume in the app service's Volumes tab
Volume	The volume claim's name and its Kubernetes namespace
Class	The volume's storage class and where it comes from
Size	The volume's size
Used	Used space and the share of the volume it takes
Pods	How many running pods mount the volume, or Not mounted

Use the filters above the list to show only one storage class, app, app environment or owner, or only volumes that are 85% full or more or not mounted. Sort by volume, size, used space or pods to see the whole cluster in that order.

A volume that isn't mounted still takes up disk space. It can be a volume of a stopped or paused app service, or one left behind after its app service was removed.

Usage that isn't reported

Usage comes from the cluster's metrics. A volume shows Not reported when its storage doesn't report usage, for example NFS volumes, or when the cluster was created without Enable monitoring. Its size, storage class and owner still show.

Local volumes on K3S clusters are folders on their server's disk. Their used space is measured every few minutes and shown as a share of the volume's size. All of them share the server's disk, so also check how full the disk is in the cluster's metrics. If they show Not reported, apply the available infrastructure app updates to the cluster.

Volumes of other app environments

The list includes every volume on the cluster and the overview counts all of them. A volume of an app environment you can't open shows Not visible to you instead of its app environment and app service.

Storage classes

Storage > Storage classes lists the storage classes the cluster offers for new volumes, with:

• provisioner
• reclaim policy: Delete removes the disk when its volume is deleted, Retain keeps the disk until you delete it in your cloud account or on the server
• binding mode
• whether volumes can be expanded
• how many volumes use the class, and their requested and used space

The cluster's default class is marked Default. A class that volumes use but that isn't offered for new volumes is marked Not offered. Volumes without a storage class are grouped in their own row.

An icon next to a class shows where it comes from:

• the icon of the storage service, such as NFS, that provides the class
• on managed Kubernetes clusters, the icon of the cluster's integration for the cloud provider's block storage

K3S local storage has no icon. Neither does a storage service in an app environment you can't open.

To choose a class for a new volume, see Application persistent storage.