在代理后运行 Opensearch

Question

当我配置 nginx 重定向/monitor到 opensearch 时，opensearch 接收请求并将用户重定向到/app/something不在的目录/monitor，从而失败（错误 404）。

我的 nginx 配置是

upstream opensearch {
    server 172.20.0.3:5601;
}

server {
    listen 443 ssl;
    server_name maindomain;
    server_tokens off;
    #access_log off;
    error_log  /var/log/nginx/cii.error_log  debug;
    access_log  /var/log/nginx/cii.error_log;


    ssl_certificate /etc/letsencrypt/live/mydomain/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/mydomain/privkey.pem;

    include /var/ssl/options-ssl-nginx.conf;
    ssl_dhparam /var/ssl/dhparam.pem;

    
    location ~ ^/monitor(/?)(.*) {
        

        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_pass_header User-Agent;
        proxy_pass http://opensearch/$2;
    }
    #put the / location AT THE END
    location / {
        root /usr/share/nginx/html;
    }    
}

有什么想法我可以如何配置 nginx（或 Opensearch？）以继续使用/monitor/app/something？