Let's Encrypt with nginx

etc-nginx-conf.d-ssl.conf

# ssl_protocols TLSv1 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:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA;
# ssl_prefer_server_ciphers on;
ssl_session_cache shared:SSL:10m;
ssl_session_timeout 24h;

etc-nginx-sites-enabled-example.com

server {
        listen [::]:80;
        listen 80;
        server_name example.com www.example.com;
        return 301 https://example.com$request_uri;
        add_header Strict-Transport-Security "max-age=31536000;";
}

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

        server_name example.com;

        ssl on;
        ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
        add_header Strict-Transport-Security "max-age=31536000;";
        include snippets/letsencryptauth.conf;

        access_log /var/log/nginx/example.com.access.log;
        error_log /var/log/nginx/example.com.error.log;

        expires 1M;

        root /var/www/example.com/htdocs;
}

etc-nginx-snippets-letsencryptauth.conf

location /.well-known/acme-challenge {
        alias /etc/letsencrypt/webrootauth/.well-known/acme-challenge;
        location ~ /.well-known/acme-challenge/(.*) {
                add_header Content-Type application/jose+json;
        }
}

renew.sh

cd /opt/letsencrypt
./letsencrypt-auto certonly --renew --webroot -w /etc/letsencrypt/webrootauth/ -d example.com