Configure OpenCloud daily backup to Hetzner Object Storage

- Use existing basicstack-backup bucket with opencloud/ prefix
- Configure endpoint: https://hel1.your-objectstorage.com
- Add pod affinity to run on same node as OpenCloud (RWO volume requirement)
- Schedule: daily at 2:00 AM UTC
- Retention: last 7 days
- First backup verified successful: 110.611 MiB transferred

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/opencloud/backup-cronjob.yaml

@@ -15,6 +15,17 @@ spec:
       template:
         spec:
           restartPolicy: OnFailure
+          # Run on same node as OpenCloud to allow volume attachment
+          affinity:
+            podAffinity:
+              requiredDuringSchedulingIgnoredDuringExecution:
+              - labelSelector:
+                  matchExpressions:
+                  - key: app
+                    operator: In
+                    values:
+                    - opencloud
+                topologyKey: kubernetes.io/hostname
           containers:
           - name: backup
             image: rclone/rclone:latest
@@ -27,20 +38,21 @@ spec:
                 echo "Starting OpenCloud backup at $DATE"
 
                 # Configure rclone for Hetzner S3
+                mkdir -p /root/.config/rclone
                 cat > /root/.config/rclone/rclone.conf <<EOC
                 [hetzner-s3]
                 type = s3
                 provider = Other
                 access_key_id = ${S3_ACCESS_KEY}
                 secret_access_key = ${S3_SECRET_KEY}
-                endpoint = https://fsn1.your-objectstorage.com
-                region = fsn1
+                endpoint = https://hel1.your-objectstorage.com
+                region = hel1
                 acl = private
                 EOC
                 
                 # Backup OpenCloud data directory
                 echo "Backing up data directory..."
-                rclone sync /data hetzner-s3:opencloud-backup/data-${DATE} \
+                rclone sync /data hetzner-s3:basicstack-backup/opencloud/data-${DATE} \
                   --progress \
                   --transfers 8 \
                   --checkers 8 \
@@ -48,12 +60,12 @@ spec:
                 
                 # Backup configuration
                 echo "Backing up configuration..."
-                rclone copy /config hetzner-s3:opencloud-backup/config-${DATE} \
+                rclone copy /config hetzner-s3:basicstack-backup/opencloud/config-${DATE} \
                   --progress
                 
                 # Keep only last 7 days of backups
                 echo "Cleaning old backups (keeping last 7 days)..."
-                rclone delete hetzner-s3:opencloud-backup \
+                rclone delete hetzner-s3:basicstack-backup/opencloud \
                   --min-age 7d \
                   --rmdirs