updating to match everything in my homelab.

diagrams/velero-backup.mmd

@@ -0,0 +1,60 @@
+%% Velero Backup Architecture
+%% Related: ADR-0032
+
+flowchart TB
+    subgraph Schedule["Backup Schedule"]
+        Nightly["Nightly Backup<br/>2:00 AM"]
+        Hourly["Hourly Snapshots<br/>Critical Namespaces"]
+    end
+
+    subgraph Velero["Velero (velero namespace)"]
+        Server["Velero Server"]
+        NodeAgent["Node Agent<br/>(DaemonSet)"]
+    end
+
+    subgraph Sources["Backup Sources"]
+        PVs["Persistent Volumes<br/>(Longhorn)"]
+        Resources["Kubernetes Resources<br/>(Secrets, ConfigMaps)"]
+        DBs["Database Dumps<br/>(Pre-backup hooks)"]
+    end
+
+    subgraph Targets["Backup Destinations"]
+        subgraph Primary["Primary: S3"]
+            MinIO["MinIO<br/>On-premises S3"]
+        end
+        subgraph Secondary["Secondary: NFS"]
+            NAS["Synology NAS<br/>Long-term retention"]
+        end
+    end
+
+    subgraph Restore["Restore Options"]
+        Full["Full Cluster Restore"]
+        Namespace["Namespace Restore"]
+        Selective["Selective Resource Restore"]
+    end
+
+    Nightly --> Server
+    Hourly --> Server
+    Server --> NodeAgent
+    NodeAgent --> PVs
+    Server --> Resources
+    Server --> DBs
+    
+    Server --> MinIO
+    MinIO -.->|Replicated| NAS
+
+    Server --> Full
+    Server --> Namespace
+    Server --> Selective
+
+    classDef schedule fill:#4a5568,stroke:#718096,color:#fff
+    classDef velero fill:#667eea,stroke:#5a67d8,color:#fff
+    classDef source fill:#48bb78,stroke:#38a169,color:#fff
+    classDef target fill:#ed8936,stroke:#dd6b20,color:#fff
+    classDef restore fill:#9f7aea,stroke:#805ad5,color:#fff
+
+    class Nightly,Hourly schedule
+    class Server,NodeAgent velero
+    class PVs,Resources,DBs source
+    class MinIO,NAS target
+    class Full,Namespace,Selective restore