curl -o /usr/sbin/certbot-auto https://dl.eff.org/certbot-auto chmod 0755 /usr/sbin/certbot-auto
server { listen 80; server_name aa.example.com bb.example.com; }
nginx -s reload
certbot-auto --nginx -d aa.example.com -d bb.expmple.com
# 證書有效期 90 天 systemctl stop nginx certbot-auto renew --force-renew systemctl start nginx