Sascha Dodenhöft
2f8fb1349c
Graphviz DOT-based diagram showing the complete storage path: App pods → PVCs (StorageClass/Retain-Policy) → Longhorn replicas → K3s worker nodes → Proxmox hosts. HA analysis annotated with color coding: - Red: SPOF (control-plane on n01, share-manager on n01) - Orange: Degraded on failure (CSI controllers on n02, RWX volumes) - Green: HA covered (2 Longhorn replicas on different Proxmox hosts) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
90 lines
4.0 KiB
Markdown
90 lines
4.0 KiB
Markdown
# ExpertFab – Longhorn Storage Architektur
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**Speicherfluss & HA-Analyse:** [../diagrams/storage_flow.png](../diagrams/storage_flow.png)
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*(Quelle: [../diagrams/storage_flow.dot](../diagrams/storage_flow.dot))*
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**Übersicht (alt):** [../diagrams/storage_architecture.png](../diagrams/storage_architecture.png)
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---
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## StorageClasses
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| Name | Reclaim | Binding | Verwendung |
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|---------------------|---------|-----------|--------------------------|
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| `longhorn` | Delete | Immediate | RabbitMQ, Zitadel |
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| `longhorn-erpnext` | Retain | Immediate | ERPNext (Daten bleiben!) |
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| `longhorn-paperless`| Retain | Immediate | Paperless (Daten bleiben!)|
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| `longhorn-static` | Delete | Immediate | Manuell provisionierte Volumes |
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| `local-path` | Delete | WaitForFirstConsumer | Rancher local-path |
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> **Retain** = PV bleibt erhalten wenn PVC gelöscht wird → Schutz vor Datenverlust
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---
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## PVCs nach Namespace
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### namespace: erpnext
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| PVC | Größe | Mode | StorageClass |
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|----------------------------|-------|------|---------------------|
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| data-erpnext-mariadb-sts-0 | 3 Gi | RWO | longhorn-erpnext |
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| erpnext | 3 Gi | RWX | longhorn-erpnext |
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| erpnext-logs | 1 Gi | RWX | longhorn-erpnext |
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### namespace: paperless
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| PVC | Größe | Mode | StorageClass |
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|--------------------|-------|------|----------------------|
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| paperless-media | 10 Gi | RWO | longhorn-paperless |
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| paperless-consume | 5 Gi | RWO | longhorn-paperless |
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| paperless-data | 5 Gi | RWO | longhorn-paperless |
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| postgres-data | 5 Gi | RWO | longhorn-paperless |
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### namespace: rabbitmq
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| PVC | Größe | Mode | StorageClass |
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|--------------------------|-------|------|--------------|
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| rabbitmq-data-rabbitmq-0 | 5 Gi | RWO | longhorn |
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### namespace: zitadel
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| PVC | Größe | Mode | StorageClass |
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|-------------------------|-------|------|--------------|
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| postgres-data-postgres-0| 10 Gi | RWO | longhorn |
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---
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## Longhorn Pods nach Node
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### efsckubnode1 (10.42.71.51)
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| Pod | Typ | Replicas |
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|---------------------------|------------|----------|
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| longhorn-manager | DaemonSet | 1 |
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| longhorn-csi-plugin | DaemonSet | 1 |
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| engine-image | DaemonSet | 1 |
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| instance-manager | – | 1 |
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| longhorn-driver-deployer | Deployment | 1 |
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| longhorn-ui | Deployment | 2 |
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| csi-attacher | Deployment | 3 |
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| csi-provisioner | Deployment | 3 |
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| csi-resizer | Deployment | 3 |
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| csi-snapshotter | Deployment | 3 |
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### efsckubnode2 (10.42.71.52)
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| Pod | Typ | Beschreibung |
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|-----------------------------|-----------|-------------------------------------|
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| longhorn-manager | DaemonSet | – |
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| longhorn-csi-plugin | DaemonSet | – |
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| engine-image | DaemonSet | – |
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| instance-manager | – | – |
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| share-manager (erpnext) | – | Bedient RWX-Volume `erpnext` (3Gi) |
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| share-manager (erpnext-logs)| – | Bedient RWX-Volume `erpnext-logs` (1Gi) |
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| daily-backup | CronJob | Tägliches Backup |
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> **share-manager** Pods werden für RWX-Volumes benötigt: Longhorn stellt RWX über NFS-Share-Manager bereit.
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> CSI-Controller-Pods (attacher, provisioner, resizer, snapshotter) laufen nur auf `efsckubnode1`.
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---
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## Hinweise
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- Longhorn UI: erreichbar über Port-Forward `kubectl port-forward -n longhorn-system svc/longhorn-frontend 8080:80`
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- Replikation: Standard 2 Replicas (beide Worker-Nodes)
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- Backups: `daily-backup` CronJob auf efsckubnode2
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