nginx reverse proxy without base url

I have an application that I can't configure a base url. Let's say that its url is 192.168.1.100:8011

I want to configure the nginx so I can entrer an url like 192.168.1.100/myappand it goes to the other app.

The configurations that I'm used to do only work when I have a base url. For example if I have an app on 192.168.1.100:8011/myapp and I wnat to use nginx for using 192.168.1.100/myapp, I have no problem but the other way I cant do it.

Is that possible ?

You can use a rewrite rule:

location /myapp/ {
    rewrite /myapp(.*) /$1 break;
    proxy_pass http://192.168.1.100:8011
}

This will send URLS like /myapp/main/ to the backend as /main/.

What you probably need is:

location /myapp/ {
  proxy_pass http://192.168.1.100:8011/;
}

Notice the trailing slashes on both location and proxy_pass directives.

If the proxy_pass directive is specified with a URI, then when a request is passed to the server, the part of a normalized request URI matching the location is replaced by a URI specified in the directive

https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass

In this case /myapp/ is being replaced with /

nginx reverse proxy without base url

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