feat(api): expose SDN DNS server entries

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

backend/app/api/proxmox/sdn.py

@@ -69,6 +69,25 @@ def get_sdn_zones(
         raise HTTPException(status_code=500, detail=str(e))
 
 
+@router.get("/api/servers/{server_id}/sdn/dns")
+def get_sdn_dns(
+    server_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("server:view"))
+):
+    """Get SDN DNS server entries (zone `dns` option expects one of their IDs)"""
+    server = db.query(ProxmoxServer).filter(ProxmoxServer.id == server_id).first()
+    if not server:
+        raise HTTPException(status_code=404, detail="Proxmox server not found")
+
+    try:
+        client = _get_proxmox_client(server)
+        return JSONResponse(content={"dns": client.get_sdn_dns()})
+    except Exception as e:
+        logger.error(f"Error getting SDN DNS entries for server {server_id}: {e}")
+        raise HTTPException(status_code=500, detail=str(e))
+
+
 @router.post("/api/servers/{server_id}/sdn/zones")
 async def create_sdn_zone(
     server_id: int,

backend/app/proxmox/mixins/network.py

@@ -38,6 +38,23 @@ class NetworkMixin:
                 logger.error(f"Error getting SDN zones: {e}")
                 return []
 
+        def get_sdn_dns(self) -> List[Dict]:
+            """
+            Get SDN DNS server entries (Datacenter -> SDN -> Options -> DNS).
+
+            Returns:
+                List of DNS entries with dns (id), type, url, etc.
+            """
+            if not self.proxmox:
+                return []
+
+            try:
+                entries = self.proxmox.cluster.sdn.dns.get()
+                return entries if isinstance(entries, list) else []
+            except Exception as e:
+                logger.error(f"Error getting SDN DNS entries: {e}")
+                return []
+
         def create_sdn_zone(self, zone: str, zone_type: str = "simple", **kwargs) -> Dict:
             """
             Create a new SDN zone.