openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout /data/pri.key -out /data/pub.pem -subj “/C=CN/ST=Shanghai/L=Shanghai/O=Self-Signed Org/OU=IT Dept/CN=aliyuncs.com”

openssl x509 -noout -fingerprint -sha256 -inform pem -in /data/pub.pem