1.删除 rm-rf /etc/letsencrypt/live archive accounts renewal
2.certbot certonly --email abc@xxx.com -n --agree-tos --webroot -w /var/www/xxx -d www.xxx.cn -d xxx.com -d www.xxx.com -d www.xxx.com.cn
3.更改 /etc/apache2/sites-enabled/000-default-le-ssl.conf
内末尾的路径为当前你的路径:
SSLCertificateFile /etc/letsencrypt/live/xxx.com/fullchain.pem
SSLCertificateKeyFile /etc/letsencrypt/live/xxx.com/privkey.pem