NGINX重写配置需求：将/files路径重定向到根域名

当前可正常访问https://files.mydomain.com/files，但访问https://files.mydomain.com时会自动重定向到https://files.mydomain.com/files。需要实现反向逻辑：将https://files.mydomain.com/files重定向到https://files.mydomain.com，同时保证根路径能正确代理到后端服务。

当前NGINX配置 #

http {

    server {
        
            listen       80;
            server_name  localhost;
            return 301 https://$host$request_uri;
    }

    server {

            listen       80;
            server_name  files.mydomain.com;
            location / {
                return 301 https://files.mydomain.com$request_uri;
        }
    }

    server {
            listen 443 ssl http2; 
            listen [::]:443 ssl http2;
            server_name  files.mydomain.com;
            client_max_body_size 0;
            location / {
                return 301 https://$host/files;
            } 
            location /files {
                proxy_pass http://localhost:89;
            }
    }

    #Root Domain
    server {
            listen 443 ssl http2; 
            listen [::]:443 ssl http2;
            server_name_in_redirect off;
            server_name  www.mydomain.com mydomain.com;
            log_not_found off;

        location / {
            root   /inetpub/wwwroot;
            index  index.html index.htm;
        }
    }
}

尝试的配置及问题 #

修改后访问https://files.mydomain.com会跳转到NGINX默认欢迎页，配置如下：

http {

    server {
        
            listen       80;
            server_name  localhost;
            return 301 https://$host$request_uri;
    }

    server {

            listen       80;
            server_name  files.mydomain.com;
            location / {
                return 301 https://files.mydomain.com$request_uri;
        }
    }

    server {
            listen 443 ssl http2; 
            listen [::]:443 ssl http2;
            server_name  files.mydomain.com;
            client_max_body_size 0;
            location ^~ /files {
                rewrite ^/files/?(.*)$ https://files.mydomain.com/$1 permanent;
                proxy_pass http://localhost:89/files;
            }
    }

    #Root Domain
    server {
            listen 443 ssl http2; 
            listen [::]:443 ssl http2;
            server_name_in_redirect off;
            server_name  www.mydomain.com mydomain.com;
            log_not_found off;

        location / {
            root   /inetpub/wwwroot;
            index  index.html index.htm;
        }
    }
}

正确配置方案 #

问题出在尝试的配置中删除了根路径location /，导致访问https://files.mydomain.com时匹配不到自定义规则，触发NGINX默认的server块。以下是修正后的配置：

http {

    server {
        
            listen       80;
            server_name  localhost;
            return 301 https://$host$request_uri;
    }

    server {

            listen       80;
            server_name  files.mydomain.com;
            location / {
                return 301 https://files.mydomain.com$request_uri;
        }
    }

    server {
            listen 443 ssl http2; 
            listen [::]:443 ssl http2;
            server_name  files.mydomain.com;
            client_max_body_size 0;

            # 处理/files开头的请求，重定向到根路径对应位置
            location ~ ^/files(/.*)?$ {
                return 301 https://$host$1;
            }

            # 根路径直接代理到后端的/files路径
            location / {
                proxy_pass http://localhost:89/files;
            }
    }

    #Root Domain
    server {
            listen 443 ssl http2; 
            listen [::]:443 ssl http2;
            server_name_in_redirect off;
            server_name  www.mydomain.com mydomain.com;
            log_not_found off;

        location / {
            root   /inetpub/wwwroot;
            index  index.html index.htm;
        }
    }
}

关键说明 #

1. location ~ ^/files(/.*)?$：正则匹配所有以/files开头的路径，将其重定向到根路径，保留后续的路径部分（比如/files/doc会重定向到/doc）
2. location /：根路径直接代理到后端服务的/files路径，这样访问https://files.mydomain.com时会直接获取后端/files下的内容，无需重定向
3. 保留了原有HTTP到HTTPS的重定向规则，确保所有请求都走HTTPS

内容的提问来源于stack exchange，提问作者MKANET