diff --git a/deploy/nginx/ai.51easyai.com-cluster.conf b/deploy/nginx/ai.51easyai.com-cluster.conf
index ebae2e1..b1c2430 100644
--- a/deploy/nginx/ai.51easyai.com-cluster.conf
+++ b/deploy/nginx/ai.51easyai.com-cluster.conf
@@ -1,15 +1,16 @@
 upstream easyai_gateway_api {
   least_conn;
   keepalive 64;
+  # Only list NodePorts that currently have a deployed site edge. A stale
+  # fixed address delays every request until proxy_connect_timeout expires.
   server 10.77.0.1:31088 max_fails=2 fail_timeout=5s;
-  server 10.77.0.2:31089 max_fails=2 fail_timeout=5s;
 }
 
 upstream easyai_gateway_web {
   least_conn;
   keepalive 32;
+  # Keep this aligned with the deployed site-specific Web services.
   server 10.77.0.1:31178 max_fails=2 fail_timeout=5s;
-  server 10.77.0.2:31179 max_fails=2 fail_timeout=5s;
 }
 
 server {