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chart/library/common/docs/persistence/README.md
Stavros Kois 1e5e1b8ef8 NAS-123350 / 24.04 / Add support in common for nfs/smb pvc (#1422)
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# 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.
---
Appears in:
- `.Values.persistence`
---
Naming scheme:
- `$FullName-$PersistenceName` (release-name-chart-name-PersistenceName)
---
> Those are the common `keys` for all **persistence**.
> Additional keys, information and examples, see on the specific kind of persistence.
- [configmap](configmap.md)
- [emptyDir](emptyDir.md)
- [ixVolume](ixVolume.md)
- [hostPath](hostPath.md)
- [device](device.md)
- [secret](secret.md)
- [pvc](pvc.md)
- [ix-zfs-pvc](ix-zfs-pvc.md)
- [smb-pv-pvc](smb-pv-pvc.md)
- [nfs-pv-pvc](nfs-pv-pvc.md)
---
Examples:
```yaml
# Example of a shared emptyDir volume
persistence:
shared:
enabled: true
type: emptyDir
mountPath: /shared
readOnly: false
targetSelectAll: true
```
```yaml
# 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
```
```yaml
# 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
```