错误的Nginx或dns配置？

Question

I deployed a website on digitalocean with nginx as a proxypass. The Site works but sometimes I have to refresh to reach the site. I am afraid that my nginx or my dns configuration is wrong, since I'm doing this the first time.

Here is my nginx config: (the server should run only on https)

   server {
      listen 80;
      server_name <site_name>.com;
      return 301 https://www.<site_name>.com$request_uri;
   }

   server {
      listen 80;
      server_name www.<site_name>.com;
      return 301 https://www.<site_name>.com$request_uri;
   }

   server {
      listen 443 ssl;
      server_name <site_name>.com;

      # FORGE SSL (DO NOT REMOVE!)
      ssl_certificate /etc/nginx/ssl/certs/ssl-bundle.crt;
      ssl_certificate_key /etc/nginx/ssl/certs/private.key;
      return 301 $scheme://www.<site_name>.com$request_uri;
   }

   server {
      listen 443;
      server_name www.<site_name>f.com;

      fastcgi_connect_timeout 300;
      fastcgi_send_timeout 300;
      fastcgi_read_timeout 300;

      ssl on;
      ssl_certificate /etc/nginx/ssl/certs/ssl-bundle.crt;
      ssl_certificate_key /etc/nginx/ssl/certs/private.key;

      ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
      ssl_ciphers ECDHE-RSA-AES256-SHA384:AES256-SHA256:RC4:HIGH:!MD5:!aNULL:!eNULL:!NULL:!DH:!EDH:!AESGCM;
      ssl_prefer_server_ciphers on;
      ssl_session_cache shared:SSL:10m;
      ssl_session_timeout 10m;

      location / {
         proxy_pass http://localhost:8000;
      }
   }

Here are my dns settings:

A Record host:@ value: TTL: automatic

A Record host:www value: TTL: 1 min

Any idea what is going wrong?

Thx!

Answer 1

When the site fails to load what is the error message, if any? I doubt this is a DNS issue, since it works sometimes.