feat: Longhorn | set up automatic backups to R2

1password/secrets.yaml

@@ -138,3 +138,13 @@ metadata:
     operator.1password.io/auto-restart: "true"
 spec:
   itemPath: "vaults/Lab/items/longhorn-encryption"
+---
+apiVersion: onepassword.com/v1
+kind: OnePasswordItem
+metadata:
+  name: longhorn-backup
+  namespace: longhorn-system
+  annotations:
+    operator.1password.io/auto-restart: "true"
+spec:
+  itemPath: "vaults/Lab/items/longhorn-backup"

helm/values/longhorn.values.yaml

@@ -1,3 +1,8 @@
+defaultSettings:
+  backupTarget: "s3://homelab-backups@apac/longhorn"
+  backupTargetCredentialSecret: longhorn-backup
+  backupCompressionMethod: "gzip"
+  backupConcurrentLimit: 4
 metrics:
   serviceMonitor:
     enabled: true