Storage¶
Architecture¶
graph LR
Pod[Pod] -->|mount| PVC[PVC]
PVC -->|NFS-CSI| NFS[NFS Server<br/>192.168.178.162]
NFS -->|ZFS| Flash[(flash pool<br/>SSD)]
NFS -->|ZFS| Spacex[(spacex pool<br/>HDD)]StorageClass¶
| Name | ZFS Pool | Disk Type | Use case |
|---|---|---|---|
nfs-flash |
/export/flash |
SSD | Databases, metrics, fast apps |
nfs-spacex |
/export/spacex |
HDD | Media, backup, bulk data |
Common configuration¶
- Provisioner:
nfs.csi.k8s.io - Reclaim Policy:
Retain— data is never deleted when the PVC is removed - Volume Binding:
WaitForFirstConsumer - Expansion: enabled (
allowVolumeExpansion: true) - SubDir:
${namespace}/${pvc-name}— automatic organization on NFS
PVC per application¶
| App | StorageClass | Size | Access Mode | Purpose |
|---|---|---|---|---|
| Prometheus | nfs-flash | 20Gi | RWO | Time-series database |
| Alertmanager | nfs-flash | 2Gi | RWO | Notification history |
| Grafana | nfs-flash | 1Gi | RWX | Persistent dashboards |
| Immich | nfs-spacex | 100Gi+ | RWX | Photos and videos |
| Gatus | nfs-spacex | 200Mi | RWX | Uptime history |
| Home Assistant Matter | nfs-flash | 1Gi | RWO | Matter bridge state |
| Trek | nfs-flash | 1Gi | RWX | Travel data |
Operational notes¶
NFS and ReadWriteOnce
NFS does not natively enforce RWO locking. If a PVC is marked as ReadWriteOnce, the constraint is logical (enforced by Kubernetes, not by the NFS server).
Check available space
# From the Proxmox host
zfs list flash spacex