Persistent Volumes are Kubernetes native.

How to set up Persistent Volumes

You can either:

Let the helm chart create the volumes for you (recommended)
Create the Volumes manually

Let the helm chart create the volumes for you (recommended)

Comment out the claimName
Check the remaining settings (see table below)
Run a helm install ...
Now the helm chart will create 3 volumes as specified in the settings
1. backend-uploads
2. button3d-media
3. button3d-private-media
Setup the respective claimName to the string of the Persistent volume name. E.g.

fileStorageConfig:
    uploads:
      claimName: "backend-uploads"
    media:
      claimName: "button3d-media"
    privateMedia:
      claimName: "button3d-private-media"

6. Now helm will use the initially created volumes instead of creating new ones.

Create the Volumes manually

1. Creating the volumes

Please consult the Kubernetes Documentation to create the 3 volumes manually.
Our recommended claim names are:

backend-uploads
button3d-media
button3d-private-media

2. Link the volumes

Setup the respective claimName to the string of the Persistent volume name. E.g.

fileStorageConfig:
    uploads:
      claimName: "backend-uploads"

All other settings will be ignored.

fileStorageConfig:
  internal:
    enabled: true
    uploads:
      size: 1Gi
      storageClass: default
      claimName:
      accessMode: ReadWriteMany
    media:
      size: 1Gi
      storageClass: default
      claimName:
      accessMode: ReadWriteMany
    privateMedia:
      size: 1Gi
      storageClass: default
      # fileStorageConfig.internal.privateMedia.claimName -- Use an existing PVC to persist data. If unspecified, a claim will be created with the name "button3d-private-media"
      claimName:
      # fileStorageConfig.internal.privateMedia.subPath -- Mount a sub directory of the persistent volume if set
      subPath: ""
      # fileStorageConfig.internal.privateMedia.accessMode -- Set to ReadWriteMany if storage needs to be accessed from another pod
      accessMode: ReadWriteMany

Settings Key	Possible Values	Description
`enabled`	`true`, `false`	Specifies if Persistent Volumes are used
`size`	`50Gi`, `200Mi`, `1Ti` , …	The size of the volume on initial creation. Only relevant if `claimName` is unset
`storageClass`	A supported storageClass name or `default`	Check https://kubernetes.io/docs/concepts/storage/storage-classes/ . You can use `kubectl get storageclass` to see what storage classes are supported in your cluster. Only relevant if `claimName` is unset
`claimName`	A string	See above
`accessMode`	`ReadWriteMany` or `ReadWriteOnce`	Specifies if you can attach to the volume from multiple pods. It is recommended to use `ReadWriteMany`. Only relevant if `claimName` is unset