Fix Kubernetes namespaces for dotted usernames

server_records.py

@@ -2,6 +2,7 @@
 
 
 from database_service import database_connection, dict_from_row
+from namespace_utils import user_namespace
 import json
 from runtime_config import (
     logger,
@@ -116,7 +117,7 @@ def get_server_access_and_namespace(server_id: str, requester_id: str) -> Tuple[
     if not owner:
         raise Exception("Server owner not found")
 
-    namespace = f"user-{owner['username']}".lower()
+    namespace = server.get('namespace') or user_namespace(owner['username'])
     return namespace, server
 
 def get_user_servers(user_id: str) -> List[Dict]: