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Initial commit: Infrastructure documentation

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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Sascha Dodenhöft
2026-05-03 13:46:47 +02:00
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# ExpertFab – Longhorn Storage Architektur
**Schaubild:** [../diagrams/storage_architecture.png](../diagrams/storage_architecture.png)
---
## StorageClasses
| Name | Reclaim | Binding | Verwendung |
|---------------------|---------|-----------|--------------------------|
| `longhorn` | Delete | Immediate | RabbitMQ, Zitadel |
| `longhorn-erpnext` | Retain | Immediate | ERPNext (Daten bleiben!) |
| `longhorn-paperless`| Retain | Immediate | Paperless (Daten bleiben!)|
| `longhorn-static` | Delete | Immediate | Manuell provisionierte Volumes |
| `local-path` | Delete | WaitForFirstConsumer | Rancher local-path |
> **Retain** = PV bleibt erhalten wenn PVC gelöscht wird → Schutz vor Datenverlust
---
## PVCs nach Namespace
### namespace: erpnext
| PVC | Größe | Mode | StorageClass |
|----------------------------|-------|------|---------------------|
| data-erpnext-mariadb-sts-0 | 3 Gi | RWO | longhorn-erpnext |
| erpnext | 3 Gi | RWX | longhorn-erpnext |
| erpnext-logs | 1 Gi | RWX | longhorn-erpnext |
### namespace: paperless
| PVC | Größe | Mode | StorageClass |
|--------------------|-------|------|----------------------|
| paperless-media | 10 Gi | RWO | longhorn-paperless |
| paperless-consume | 5 Gi | RWO | longhorn-paperless |
| paperless-data | 5 Gi | RWO | longhorn-paperless |
| postgres-data | 5 Gi | RWO | longhorn-paperless |
### namespace: rabbitmq
| PVC | Größe | Mode | StorageClass |
|--------------------------|-------|------|--------------|
| rabbitmq-data-rabbitmq-0 | 5 Gi | RWO | longhorn |
### namespace: zitadel
| PVC | Größe | Mode | StorageClass |
|-------------------------|-------|------|--------------|
| postgres-data-postgres-0| 10 Gi | RWO | longhorn |
---
## Longhorn Pods nach Node
### efsckubnode1 (10.42.71.51)
| Pod | Typ | Replicas |
|---------------------------|------------|----------|
| longhorn-manager | DaemonSet | 1 |
| longhorn-csi-plugin | DaemonSet | 1 |
| engine-image | DaemonSet | 1 |
| instance-manager | – | 1 |
| longhorn-driver-deployer | Deployment | 1 |
| longhorn-ui | Deployment | 2 |
| csi-attacher | Deployment | 3 |
| csi-provisioner | Deployment | 3 |
| csi-resizer | Deployment | 3 |
| csi-snapshotter | Deployment | 3 |
### efsckubnode2 (10.42.71.52)
| Pod | Typ | Beschreibung |
|-----------------------------|-----------|-------------------------------------|
| longhorn-manager | DaemonSet | – |
| longhorn-csi-plugin | DaemonSet | – |
| engine-image | DaemonSet | – |
| instance-manager | – | – |
| share-manager (erpnext) | – | Bedient RWX-Volume `erpnext` (3Gi) |
| share-manager (erpnext-logs)| – | Bedient RWX-Volume `erpnext-logs` (1Gi) |
| daily-backup | CronJob | Tägliches Backup |
> **share-manager** Pods werden für RWX-Volumes benötigt: Longhorn stellt RWX über NFS-Share-Manager bereit.
> CSI-Controller-Pods (attacher, provisioner, resizer, snapshotter) laufen nur auf `efsckubnode1`.
---
## Hinweise
- Longhorn UI: erreichbar über Port-Forward `kubectl port-forward -n longhorn-system svc/longhorn-frontend 8080:80`
- Replikation: Standard 2 Replicas (beide Worker-Nodes)
- Backups: `daily-backup` CronJob auf efsckubnode2