centOs7.2 配置SSL证书问题

    弄了一下午，百度也百度了好久，但是都没有配置成功，论坛的帖子有看了好多，还是没有解决问题，一开始服务器没有mod_ssl ，我也安装了yum install mod_ssl -y，按照SSL证书开发文档，一步一步流程做下来的，布置好之后，Apache都启动不了，一直报错
[font=Arial, "]● httpd. [font=Arial, "]service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2017-08-16 17:42:43 CST; 31s ago
     Docs: man:httpd(8)
           man:apachectl(8)
  Process: 9590 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=1/FAILURE)
  Process: 9588 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND (code=exited, status=1/FAILURE)
Main PID: 9588 (code=exited, status=1/FAILURE)

Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ httpd[9588]: AH00558: httpd: Could not reliably determine the server's fully qualifie...essage
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ httpd[9588]: (98)Address already in use: AH00072: make_sock: could not bind to addres....0:443
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ httpd[9588]: no listening sockets available, shutting down
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ httpd[9588]: AH00015: Unable to open logs
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ kill[9590]: kill: cannot find process ""
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ systemd[1]: httpd.service: control process exited, code=exited status=1
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ systemd[1]: Failed to start The Apache HTTP Server.
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ systemd[1]: Unit httpd.service entered failed state.
Aug 16 17:42:43 iZwz93lb4s91rgir7263akZ systemd[1]: httpd.service failed.
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好烦啊，求大神指教！！！！！！！！！！！！！！！！！！！