algunas configuraciones de reverse proxy, algunas faltan afinar

nginx.conf

server {
    listen 80;
    server_name app.bolpros.com 10.11.25.2:8000;

    # Strict Transport Security
    add_header Strict-Transport-Security max-age=2592000;

    rewrite ^/mobile.*$ https://10.0.2.15/web_mobile/static/src/web_mobile.html permanent;
    rewrite ^/webdav(.*)$ https://10.0.2.15/webdav/$1 permanent;
    rewrite ^/.*$ https://10.0.2.15 permanent;
}

server {
    listen 80;
    server_name www.pentaho.eygsa.com pentaho.eygsa.com;
    access_log off;
    error_log off;
    # proxy to Apache 2 and mod_python
    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_redirect off;
        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_max_temp_file_size 0;
        client_max_body_size 10m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 900;
        proxy_send_timeout 900;
        proxy_read_timeout 900;
        send_timeout 900;
        proxy_buffer_size 4k;
        proxy_buffers 4 32k;
        proxy_busy_buffers_size 64k;
        proxy_temp_file_write_size 64k;
    }
}


server {
    listen       80;
    server_name  www.glr.eygsa.com glr.eygsa.com;

    access_log  off;
    error_log off;

    # proxy to Apache 2 and mod_python
    location / {
        proxy_pass         http://192.155.94.24:8071/;
        proxy_redirect     off;

        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_max_temp_file_size 0;

        client_max_body_size       10m;
        client_body_buffer_size    128k;

        proxy_connect_timeout      900;
        proxy_send_timeout         900;
        proxy_read_timeout         900;
        send_timeout               900;

        proxy_buffer_size          4k;
        proxy_buffers              4 32k;
        proxy_busy_buffers_size    64k;
        proxy_temp_file_write_size 64k;
    }
}


############################################
funciona

worker_processes 2;

events { worker_connections 1024; }

http {

        #upstream java-app {
        #      least_conn;
        #      #server node1:8080 weight=10 max_fails=3 fail_timeout=30s;
        #      #server node2:8080 weight=10 max_fails=3 fail_timeout=30s;
        #     #server node3:8080 weight=10 max_fails=3 fail_timeout=30s;
	#            server node:8080 weight=10 max_fails=3 fail_timeout=30s;
        #}

	upstream negociacion-app {
		server subasta:8080 weight=10 max_fails=3 fail_timeout=30s;
	}

    server {
        listen 80;
        server_name app.bolpros.com localhost;
        access_log off;
        error_log off;
        # proxy to Apache 2 and mod_python
        location /negociacion {
            proxy_pass http://negociacion-app;
            proxy_redirect off;
            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_max_temp_file_size 0;
            client_max_body_size 10m;
            client_body_buffer_size 128k;
            proxy_connect_timeout 900;
            proxy_send_timeout 900;
            proxy_read_timeout 900;
            send_timeout 900;
            proxy_buffer_size 4k;
            proxy_buffers 4 32k;
            proxy_busy_buffers_size 64k;
            proxy_temp_file_write_size 64k;
        }
    }


}



#############################################
funciona



worker_processes 1;

events { worker_connections 1024; }

http {

        upstream negociacion-app {
              server subasta:8080 weight=10 max_fails=3 fail_timeout=30s;
        }

        server {
              listen 80;

              location /negociacion {
                proxy_pass http://negociacion-app;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
              }
        }
}

# ssl  # https://garage.godaddy.com/tech/config/how-to-install-an-ssl-certificate-on-centos-and-fedora-for-nginx/

# java server # http://wiki.nginx.org/JavaServers

# glassfish 4.1 # https://vpsineu.com/blog/install-glassfish-4-1-and-setup-reverse-proxy-with-nginx-on-an-ubuntu-14-04-vps/

# protejer nginx # http://ironsistem.com/tutoriales/servidores/protege-tu-sitio-con-nginx-de-ataques-por-fuerza-bruta/