Obtain the signed certificate from the CA after submitting the CSR.

Copy the certificate to the path, for example /etc/pki/tls/certs/www.example.com.crt

Edit /etc/httpd/conf.d/ssl.conf. Change the SSLCertificateFile and SSLCertificateKey lines to be.

SSLCertificateFile /etc/pki/tls/certs/www.example.com.crt
SSLCertificateKeyFile /etc/pki/tls/private/www.example.com.key

where the "www.example.com" part should match the argument passed on the genkey command.