elasticsearch served over nginx with proxy + Let's encrypt (certbot) for SSL

nginx-elasticsearch.conf

server {
  listen 80;
  server_name elasticsite.com;

  access_log off;
  error_log off;

  # enforce https
  return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    ssl_certificate /etc/letsencrypt/live/elasticsite.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/elasticsite.com/privkey.pem;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:10m;
    ssl_session_tickets off;

    # openssl dhparam -out dhparam.pem 2048
    ssl_dhparam /etc/nginx/dhparam.pem;

    ssl_protocols TLSv1.1 TLSv1.2;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK';
    ssl_prefer_server_ciphers on;

    add_header Strict-Transport-Security max-age=15768000;

    ##Added once to prevent multiple additions
    #add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;";


    ssl_stapling on;
    ssl_stapling_verify on;

    ## verify chain of trust of OCSP response using Root CA and Intermediate certs
    #ssl_trusted_certificate /path/to/root_CA_cert_plus_intermediates;
    ssl_trusted_certificate /etc/letsencrypt/live/elasticsite.com/chain.pem;
    resolver 8.8.8.8 8.8.4.4 valid=86400;
    resolver_timeout 10;



        server_name elasticsite.com;

        location / {

                auth_basic           "closed site";
                auth_basic_user_file /etc/nginx/htpasswd;

                access_log off;
                error_log off;

                proxy_pass http://localhost:9200;
                proxy_redirect off;

                proxy_http_version 1.1;
                proxy_set_header Connection "Keep-Alive";
                proxy_set_header Proxy-Connection "Keep-Alive";

                proxy_set_header  X-Real-IP  $remote_addr;
                proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
                #proxy_set_header  Host $http_host;

        }

}