openssl rsa -in privateKey.key -check
openssl x509 -in cert.pem -noout -issuer -issuer_hash
openssl x509 -noout -modulus -in $cert | openssl md5 && openssl rsa -noout -modulus -in $key | openssl md5
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /root/compute2.key -out /root/comute2.crt
openssl x509 -in $cert -noout -text