nginx - Certbot Nginx/Ubuntu16.04 タイムアウト

Question

EC2 サーバー/Ubuntu Xenial 16.04 で nginx を正常に構成した後、certbot を数回インストールしようとしましたが、タイムアウトの問題が発生して毎回失敗しました。

https://certbot.eff.org/#ubuntuxenial-nginxの手順に従いました が、成功メッセージが表示されますが、テストに行くと: https://www.ssllabs.com/ssltest/analyze.html?d= mysite.com

うまくいきません。また、試してみると: curl -I https://54.238.241.234:443 # 失敗します ただし: curl -I http://54.238.241.234:80 # 動作します

私のNginx構成は次のとおりです。

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        # SSL configuration
        #
        # listen 443 ssl default_server;
        # listen [::]:443 ssl default_server;
        #
        # Note: You should disable gzip for SSL traffic.
        # See: https://bugs.debian.org/773332
        #
        # Read up on ssl_ciphers to ensure a secure configuration.
        # See: https://bugs.debian.org/765782
        #
        # Self signed certs generated by the ssl-cert package
        # Don't use them in a production server!
        #
        # include snippets/snakeoil.conf;


        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html;

        server_name mysite.com;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
        }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
                include snippets/fastcgi-php.conf;

                # With php7.0-cgi alone:
                #fastcgi_pass 127.0.0.1:9000;
                # With php7.0-fpm:
                fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        location ~ /\.ht {
                deny all;
        }

        location ~ /.well-known {
                    allow all;
        }



    listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/mysite.com-0002/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/mysite.com-0002/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot


    if ($scheme != "https") {
        return 301 https://$host$request_uri;
    } # managed by Certbot
}

私のUFWステータスは次のとおりです

Status: active

To                         Action      From
--                         ------      ----
22                         ALLOW       Anywhere                  
Nginx Full                 ALLOW       Anywhere                  
443                        ALLOW       Anywhere                  
80                         ALLOW       Anywhere                  
22 (v6)                    ALLOW       Anywhere (v6)             
Nginx Full (v6)            ALLOW       Anywhere (v6)             
443 (v6)                   ALLOW       Anywhere (v6)             
80 (v6)                    ALLOW       Anywhere (v6)   

私のroute53設定も正しいです。

この問題はどこから来たのか本当に疑問に思っています。この問題について何か助けていただければ幸いです。前もって感謝します。