truenas/library/common/docs/persistence

Persistence

Key	Type	Required	Helm Template	Default	Description
persistence	dict	❌	❌	{}	Define the persistence as dicts
persistence.[volume-name]	dict	✅	❌	{}	Holds persistence definition
persistence.[volume-name].enabled	boolean	✅	❌	false	Enables or Disables the persistence
persistence.[volume-name].type	string	❌	❌	{{ .Values.fallbackDefaults.persistenceType }}	Define the persistence type (ixVolume, hostPath, configmap, secret, device, pvc, ix-zfs-pvc, smb-pv-pvc, nfs-pv-pvc)
persistence.[volume-name].mountPath	string	✅	✅	""	Default mountPath for all containers that are selected
persistence.[volume-name].mountPropagation	string	❌	✅	""	Default mountPropagation for all containers that are selected
persistence.[volume-name].subPath	string	❌	✅	""	Default subPath for all containers that are selected
persistence.[volume-name].readOnly	boolean	❌	❌	false	Default readOnly for all containers that are selected
persistence.[volume-name].targetSelectAll	boolean	❌	❌	false	Define wether to define this volume to all workloads and mount it on all containers
persistence.[volume-name].targetSelector	dict	❌	❌	{}	Define a dict with pod and containers to mount
persistence.[volume-name].targetSelector.[pod-name]	dict	❌	❌	{}	Define a dict named after the pod to define the volume
persistence.[volume-name].targetSelector.[pod-name].[container-name]	dict	❌	❌	{}	Define a dict named after the container to mount the volume
persistence.[volume-name].targetSelector.[pod-name].[container-name].mountPath	string	❌	✅	[volume-name].mountPath	Define the mountPath for the container
persistence.[volume-name].targetSelector.[pod-name].[container-name].mountPropagation	string	❌	✅	[volume-name].mountPropagation	Define the mountPropagation for the container
persistence.[volume-name].targetSelector.[pod-name].[container-name].subPath	string	❌	✅	[volume-name].subPath	Define the subPath for the container
persistence.[volume-name].targetSelector.[pod-name].[container-name].readOnly	boolean	❌	❌	[volume-name].readOnly	Define the readOnly for the container

When targetSelectAll is true, it will define the volume to all pods and volumeMount to all containers (targetSelector is ignored in this case) When targetSelector is defined, it will define the volume to the pod(s) and volumeMount to the container(s) selected. See below for the selector structure. When targetSelector is a empty, it will define the volume to the primary pod and volumeMount to the primary container targetSelectAll is only useful when you want to mount a shared volume to all pods and containers. Otherwise, you should use targetSelector to define the volume to specific pods and containers.

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Appears in:

• .Values.persistence

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Naming scheme:

• $FullName-$PersistenceName (release-name-chart-name-PersistenceName)

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Those are the common keys for all persistence. Additional keys, information and examples, see on the specific kind of persistence.

• configmap
• emptyDir
• ixVolume
• hostPath
• device
• secret
• pvc
• ix-zfs-pvc
• smb-pv-pvc
• nfs-pv-pvc

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Examples:

# Example of a shared emptyDir volume
persistence:
  shared:
    enabled: true
    type: emptyDir
    mountPath: /shared
    readOnly: false
    targetSelectAll: true

# Example of a volume mounted to a specific container with a specific mountPath
persistence:
  config:
    enabled: true
    type: emptyDir
    targetSelector:
      my-pod:
        my-container: {}
          mountPath: /path
          readOnly: false
        my-other-container: {}
          mountPath: /other/path
          readOnly: false

# Example of a volume mounted to a specific container using the default mountPath
persistence:
  config:
    enabled: true
    type: emptyDir
    mountPath: /path
    readOnly: true
    targetSelector:
      my-pod:
        my-container: {}
        my-other-container:
          mountPath: /other/path
          readOnly: false