Two identical subdomains with similar nginx proxy but only the other one works

[imaximushelp]

Two subdomains that uses the identical NGINX config. However both config’s server_name are set to their respective subdomain. Here comes the problem they both listen to the same port but only the other one works. If I remove the working one still it doesn’t work. In this scenario the working subdomain is “auth” and the non-working subdomain is “android”.

[cscharff]

Do they work when the records are not proxied by Cloudflare?

[imaximushelp]

No, Unfortunately they both do not.

“refused to connect”

[cscharff]

If they don’t work while unproxied you likely have a configuration issue with your nginx config. That would need to be remediated before Cloudflare can proxy traffic to the site(s).

[imaximushelp]

I use cloudflare-ips for X-Real-IP;

I use full strict SSL;

Both uses the same config but both’s server_name are set to their respective sub domains.

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name  android.domain.x;
    root my-path;

    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";

    charset utf-8;

    location / {
        proxy_pass http://localhost:54160;
        add_header X-Forwarded-Proto https;
        add_header X-Forwarded-Port 443;
        fastcgi_param  HTTPS "on";
        fastcgi_param  HTTP_X_FORWARDED_PROTO "https";
        proxy_http_version 1.1;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_set_header X-Forwarded-Proto $scheme;
    }
}