在做ICT集成项目时，遇到需要对现网接口进行拨测的需求。搜索后尝试使用开源的Uptime Kuma组件完成现网接口拨测。

        但该项目有个问题就是默认不支持配置固定前缀，这对现网进行请求转发会造成较大的影响。通过查看该项目的github后找到了问题的解决方案。Subfolder support (publicPath) · Issue #147 · louislam/uptime-kuma · GitHub

        解决的方案就是在Nginx上追加以下配置：

location /subpath {proxy_pass http://127.0.0.1:3001;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;proxy_set_header X-Forwarded-Proto $scheme;proxy_http_version 1.1;proxy_set_header Upgrade $http_upgrade;proxy_set_header Connection "upgrade";# define url prefixset $url_prefix subpath;# remove url prefix to pass to backendrewrite ^/subpath/?(.*)$ /$1 break;# redirect location headersproxy_redirect ^ /$url_prefix;proxy_redirect /dashboard /$url_prefix/dashboard;# sub filters to replace hardcoded pathsproxy_set_header Accept-Encoding "";sub_filter_last_modified on;sub_filter_once off;sub_filter_types *;sub_filter '/assets/' '/$url_prefix/assets/';sub_filter '"assets/' '"$url_prefix/assets/';sub_filter '/socket.io' '/$url_prefix/socket.io';sub_filter '/icon.svg' '/$url_prefix/icon.svg';sub_filter '/favicon.ico' '/$url_prefix/favicon.ico';sub_filter '/apple-touch-icon.png' '/$url_prefix/apple-touch-icon.png';sub_filter '/manifest.json' '/$url_prefix/manifest.json';sub_filter '/add' '/$url_prefix/add';sub_filter '/settings/' '/$url_prefix/settings/';sub_filter '"/settings' '"/$url_prefix/settings';sub_filter '/dashboard' '/$url_prefix/dashboard';sub_filter '/maintenance' '/$url_prefix/maintenance';sub_filter '/add-status-page' '/$url_prefix/add-status-page';sub_filter '/manage-status-page' '/$url_prefix/manage-status-page';sub_filter '"/status/' '"/$url_prefix/status/';sub_filter '/upload/' '/$url_prefix/upload/';sub_filter '/api/' '/$url_prefix/api/';}

        实际运行时又遇到报错：unknown directive 'sub_filter_last_modified'，需要重新编译Nginx，在编译时增加--with-http_sub_module命令，具体下载和重新编译Nginx的过程不再赘述。

        最终可以达到通过固定前缀，访问Uptime Kuma项目的结果。