renew_cert.sh

cd /home/liuliang/www/w3ctech/ssl/
python acme_tiny.py --account-key account.key --csr domain.csr --acme-dir /home/liuliang/www/w3ctech/www/challenges/ > signed.crt || exit
wget -O - https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem > intermediate.pem
cat signed.crt intermediate.pem > chained.pem
/usr/local/nginx/sbin/nginx -s reload