Server should be SSL-aware but has no certificate

运维配置ssl后导致apache无法启动，报错如下

[Tue Mar 17 16:23:36 2015] [error] Server should be SSL-aware but has no certificate configured [Hint: SSLCertificateFile] ((null):0)

解决方案：

<virtualhost *:443>
  ...
  SSLEngine on
  SSLCertificateFile /etc/pki/tls/certs/localhost.crt
  SSLCertificateKeyFile /etc/pki/tls/private/localhost.key
</virtualhost>

Server should be SSL-aware but has no certificate

原文：http://my.oschina.net/linland/blog/388044