diff --git a/ops-scripts/tencent_operator.py b/ops-scripts/tencent_operator.py
index ab2bf73..40fd30e 100755
--- a/ops-scripts/tencent_operator.py
+++ b/ops-scripts/tencent_operator.py
@@ -352,9 +352,7 @@ class CloudOperator:
             "Weight": int(weight),
         }
 
-        location_id = str(clb_cfg.get("location_id", "")).strip()
-        domain = str(clb_cfg.get("domain", "")).strip()
-        url = str(clb_cfg.get("url", "")).strip()
+        location_id, domain, url = self.resolve_gateway_rule(clb_cfg)
         if location_id:
             payload["LocationId"] = location_id
         elif domain and url:
@@ -367,6 +365,49 @@ class CloudOperator:
         request_id = sdk_body(resp)["RequestId"]
         self.wait_for_clb_task(request_id)
 
+    def resolve_gateway_rule(self, clb_cfg: dict[str, Any]) -> tuple[str, str, str]:
+        location_id = str(clb_cfg.get("location_id", "")).strip()
+        domain = str(clb_cfg.get("domain", "")).strip()
+        url = str(clb_cfg.get("url", "")).strip()
+        if location_id or (domain and url):
+            return location_id, domain, url
+
+        req = clb_models.DescribeListenersRequest()
+        req.from_json_string(
+            json.dumps(
+                {
+                    "LoadBalancerId": str(clb_cfg["load_balancer_id"]),
+                    "ListenerIds": [str(clb_cfg["listener_id"])],
+                }
+            )
+        )
+        resp = self.clb.DescribeListeners(req)
+        body = sdk_body(resp)
+        listeners = body.get("Listeners", [])
+        if not listeners:
+            raise RuntimeError(
+                f"CLB listener {clb_cfg['listener_id']} not found under load balancer {clb_cfg['load_balancer_id']}"
+            )
+
+        listener = listeners[0]
+        protocol = str(listener.get("Protocol", "")).upper()
+        if protocol not in {"HTTP", "HTTPS"}:
+            return "", "", ""
+
+        rules = listener.get("Rules") or []
+        if len(rules) == 1:
+            rule = rules[0]
+            return (
+                str(rule.get("LocationId", "")).strip(),
+                str(rule.get("Domain", "")).strip(),
+                str(rule.get("Url", "")).strip(),
+            )
+
+        raise RuntimeError(
+            f"listener {clb_cfg['listener_id']} is {protocol} and has {len(rules)} rules; "
+            "set gateway.clb.location_id or gateway.clb.domain+url in config/prod.yaml"
+        )
+
     def wait_for_clb_task(self, request_id: str) -> None:
         deadline = time.time() + 300
         while time.time() < deadline: