Fix Kubernetes namespaces for dotted usernames

domain_service.py

@@ -7,6 +7,7 @@ from domain_runtime import domain_manager
 import json
 from kubernetes.client.rest import ApiException
 from kubernetes_service import custom_objects_api, k8s_manager
+from namespace_utils import user_namespace
 import re
 from runtime_config import (
     NODE_IP,
@@ -325,7 +326,7 @@ def cleanup_orphaned_ingressroutes():
             for domain, username in db_domains.items():
                 if not domain or not username:
                     continue
-                namespace = f"user-{username}".lower()
+                namespace = user_namespace(username)
                 subdomain = domain.split('.')[0]
                 ingressroute_name = f"{subdomain}-ingress"
 
@@ -590,7 +591,7 @@ def link_domain_to_server(domain_id: str, server_id: str) -> bool:
                 return False
 
             username = user['username']
-            namespace = (server.get('namespace') or f"user-{username}").lower()
+            namespace = server.get('namespace') or user_namespace(username)
             domain_host = domain.get('full_domain') or domain.get('domain')
             if not domain_host:
                 logger.error("Domain record has no hostname: %s", domain_id)
@@ -675,7 +676,7 @@ def unlink_domain_from_server(domain_id: str) -> bool:
 
             if user:
                 username = user['username']
-                namespace = ((server or {}).get('namespace') or f"user-{username}").lower()
+                namespace = (server or {}).get('namespace') or user_namespace(username)
 
                 # Delete IngressRoute in Kubernetes
                 if not delete_traefik_ingressroute(domain=domain_host, namespace=namespace):