Apache startup failed – look at /var/log/httpd/ssl_error_log and show the following error :
Unable to configure RSA server private key
SSL Library Error: x509 certificate routines:X509_check_private_key:key values mismatch
The private key and the certificate do not match. You can compare the certificate and the key with the following commands :
View the certificate modulus using the following command :
openssl x509 -noout -text -in certfile -modulus
View the key using the following command :
openssl rsa -noout -text -in keyfile -modulus