diff --git a/manager/src/main/resources/define/app-api.yml b/manager/src/main/resources/define/app-api.yml
index 9180aa88a88..d3ec3c0f2ee 100644
--- a/manager/src/main/resources/define/app-api.yml
+++ b/manager/src/main/resources/define/app-api.yml
@@ -350,6 +350,9 @@ metrics:
         basicAuthPassword: ^_^password^_^
         digestAuthUsername: ^_^username^_^
         digestAuthPassword: ^_^password^_^
+      #http success status code. default 200
+      #successCode means what http response status code we consider it collect success.
+      successCodes: [200, 503]
       # http response data parse type: default-hertzbeat rule, jsonpath-jsonpath script, website-for website monitoring, prometheus-prometheus exporter rule
       # http 响应数据解析方式: default-系统规则, jsonPath-jsonPath脚本, website-网站可用性指标监控, prometheus-Prometheus数据规则
       parseType: website