diff --git a/gpulive/monitoring/overlays/default/prometheus/patch-ingress_alertmanager.yaml b/gpulive/monitoring/overlays/default/prometheus/patch-ingress_alertmanager.yaml
index d21488b..f4d0849 100644
--- a/gpulive/monitoring/overlays/default/prometheus/patch-ingress_alertmanager.yaml
+++ b/gpulive/monitoring/overlays/default/prometheus/patch-ingress_alertmanager.yaml
@@ -3,17 +3,10 @@ kind: Ingress
 metadata:
   name: prometheus-alertmanager-ingress
   namespace: monitoring
-  annotations:
-    # 인증 방법 설정: basic auth
-    nginx.ingress.kubernetes.io/auth-type: basic
-    # basic auth 사용자가 들어있는 secret 설정
-    nginx.ingress.kubernetes.io/auth-secret: basic-auth
-    # 인증 요청시 나오는 메세지 설정
-    nginx.ingress.kubernetes.io/auth-realm: 'Authentication Required - admin'
 spec:
   ingressClassName: nginx
   rules:
-  - host: alert.nhngpuaas.com
+  - host: alpha-alert.gpulive.apppaas.io
     http:
       paths:
       - backend:
@@ -25,5 +18,5 @@ spec:
         pathType: Prefix
   tls:
   - hosts:
-    - alert.nhngpuaas.com
-    secretName: nhngpuaas-ssl
\ No newline at end of file
+    - alpha-alert.gpulive.apppaas.io
+    secretName: gpulive-apppaas-io-ssl