docs: create betrieb/room-policies

2026-08-13 18:05:00 +00:00
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+---
+title: Room Policies
+description: Retention, Publication, Auto-Join
+published: true
+date: 2026-08-13T18:04:54.839Z
+tags: 
+editor: markdown
+dateCreated: 2026-08-13T18:04:54.839Z
+---
+
+**Status**: ✅ Vollständig deployed  
+**Konfiguration**: `apps/production/custom-configs/synapse-values.yaml`
+
+## 1. Message Retention
+
+Alte Nachrichten automatisch löschen (Speicher sparen, DSGVO).
+
+```yaml
+retention:
+  enabled: true
+  default_policy:
+    min_lifetime: 1d      # Messages bleiben ≥1d
+    max_lifetime: 1y      # Messages gelöscht nach 1 Jahr
+
+media_retention:
+  local_media_lifetime: 365d      # 1 Jahr
+  remote_media_lifetime: 90d      # 90 Tage
+
+redaction_retention_period: 7d    # Gelöschte Messages noch 7d sichtbar
+```
+
+## 2. Room Publication Rules
+
+Kontrollieren welche Rooms im öffentlichen Directory sichtbar sind.
+
+```yaml
+room_list_publication_rules:
+  - user_id: "*"           # Alle User
+    action: allow          # dürfen ihre Rooms publishen
+```
+
+**Alternativ (restrictiv)**: Nur Admins publishen
+```yaml
+room_list_publication_rules:
+  - user_id: "@admin:axion1337.chat"
+    action: allow
+  - user_id: "*"
+    action: deny
+```
+
+## 3. Auto-Join Rooms
+
+Neue User automatisch in bestimmte Rooms hinzufügen (Onboarding).
+
+```yaml
+auto_join_rooms:
+  - "!announcements:axion1337.chat"
+  - "!rules:axion1337.chat"
+auto_join_rooms_for_guests: false    # Nur registered users
+```
+
+**Room ID finden**: Element Settings → Advanced → Room ID
+
+## Deployment
+
+```bash
+# Edit ConfigMap
+kubectl apply -f apps/production/custom-configs/synapse-values.yaml
+
+# Synapse neustarten
+kubectl rollout restart deployment -n matrix matrix-stack-synapse
+
+# Verify
+kubectl logs -n matrix -l app.kubernetes.io/name=synapse | grep -i "retention\|publication"
+```
+
+## Best Practices
+
+**Privater Server**:
+- max_lifetime: 1y (großzügig)
+- action: allow (alle publishen)
+- auto_join_rooms: announcements + rules
+
+**Öffentlicher Server (DSGWR)**:
+- max_lifetime: 90d (kurz)
+- action: deny (nur Admins)
+- auto_join_rooms: [] (keine Zwangs-Rooms)
+
+---
+**Weitere Details**: Siehe Kapitel 5.