centos httpd服务 报错： Unregistered Authentication Agent for unix-process
yum install httpd httpd-devel
安装一切正常，启动服务:
systemctl enable httpd
systemctl start httpd.service
现错误信息，服务不能正常启动，检查错误信息：
systemctl status httpd.service
错误信息不是很明确，查/var/log/httpd/error_log
提示certification：
Misconfiguration of certificate's CN and virtual name. The certificate CN has localhost4.localdomain4.
编辑/etc/httpd/conf.d/nss.conf，增加一行：
NSSEnforceValidCerts off
保存重启httpd服务：
systemctl start httpd.service
检查httpd服务状态：
systemctl status httpd.service
显示服务正常，问题解决。
