Nginx config to access same IP but different port? - nginx

Question

I have one virtual IP (keepalived IP z.z.z.z) .I am creating 2 different webpages and want to access it using this virtual ip via nginx . I read that I can achieve it with different ports but I do not want to show the port . So what I want is when I hit x.x.x.x it should ask for username and password and when I enter it should take me to the respective webpage .
my current config file for 1st web page
upstream kibana {
server x.x.x.x:30001;
server y.y.y.y:30001;
}
server {
listen 80;
listen 443 ssl;
server_name z.z.z.z;
location / {
auth_basic "protect kibana";
auth_basic_user_file /etc/nginx/htpasswd.user;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_pass http://kibana;
}
}
My Edited Conf file
upstream kibana {
server x.x.x.x:30001;
server y.y.y.y:30001;
}
upstream kibana2 {
server x.x.x.x:30002;
server y.y.y.y:30002;
}
server {
listen 80;
listen 443 ssl;
server_name z.z.z.z;
location / {
auth_basic "protect kibana";
auth_basic_user_file /etc/nginx/htpasswd.user;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_pass http://kibana;
}
}
As I am using another upstream that is kibana 2 , so how I need to add another server stenza ?
Regards
VG