nginx.conf

upstream puma {
  server unix:///home/deploy/example/shared/tmp/sockets/example-puma.sock;
}

server {
  server_name example.com;

  root /home/deploy/example/current/public;
  access_log /home/deploy/example/current/log/nginx.access.log;
  error_log /home/deploy/example/current/log/nginx.error.log info;

  try_files $uri/index.html $uri @puma;
  location @puma {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_set_header X-NginX-Proxy true;
    proxy_pass http://puma;
  }

  location /cable {
    proxy_pass http://puma;
    proxy_http_version 1.1;
    proxy_set_header Upgrade websocket;
    proxy_set_header Connection Upgrade;
   }

  auth_basic "Private Property";
  auth_basic_user_file /etc/nginx/.htpasswd;
  error_page 500 502 503 504 /500.html;
  client_max_body_size 200M;
  keepalive_timeout 100;

  listen 443 ssl; # managed by Certbot
  ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; # managed by Certbot
  ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; # managed by Certbot
  include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
  ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}

server {
    if ($host = example.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


  listen 80;
  server_name example.com

  root /home/deploy/example/current/public;
    return 404; # managed by Certbot


}