enable ssl on apache2

sudo a2ensite default-ssl
sudo a2enmod ssl

create below dir:
/etc/apach2/ssl.crt
/etc/apache2/ssl.key
/etc/apache2/ca-bundle

ssl.key should be from CSR


remove pass phrase

/path/to/openssl rsa -in /path/to/originalkeywithpass.key -out /path/to/newkeywithnopass.key