diff --git a/node_external_ip_controller_async.py b/node_external_ip_controller_async.py
index 61360db..e87c270 100644
--- a/node_external_ip_controller_async.py
+++ b/node_external_ip_controller_async.py
@@ -1,13 +1,19 @@
 import asyncio
 from kubernetes_asyncio import client, config, watch
 
+# node_external_ip_controller_async.py
+
+import os
+
 # Configuration
-SERVICE_NAME = "traefik"
-SERVICE_NAME_LABEL_PATTERN = "app.kubernetes.io/name=traefik"  # Define the service name pattern or label to identify services
-NAMESPACE = "kube-system"
-ANNOTATION_KEY = "kube-vip.io/loadbalancerIPs"
-ZERO_GATEWAY_IP = "172.28.10.1"
-NODE_LABEL = "svccontroller.k3s.cattle.io/enablelb=true"
+SERVICE_NAME = os.getenv("SERVICE_NAME", "traefik")
+SERVICE_NAME_LABEL_PATTERN = os.getenv(
+    "SERVICE_NAME_LABEL_PATTERN", "app.kubernetes.io/name=traefik"
+)
+NAMESPACE = os.getenv("NAMESPACE", "kube-system")
+ANNOTATION_KEY = os.getenv("ANNOTATION_KEY", "kube-vip.io/loadbalancerIPs")
+ZERO_GATEWAY_IP = os.getenv("ZERO_GATEWAY_IP", "172.28.10.1")
+NODE_LABEL = os.getenv("NODE_LABEL", "svccontroller.k3s.cattle.io/enablelb=true")
 
 
 async def update_service_annotation(v1, service_name, external_ip):