刚接触 ubunutu，为 Kodi 安装了 mysql 并进行了配置，现在我正在使用 Owncloud，在安装过程中，Apache 无法正常使用。journalctl -xe结果如下：
-- Unit apache2.service has begun starting up.
Sep 01 07:50:25 Kodi-Server apachectl[16967]: AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. S
Sep 01 07:50:25 Kodi-Server apachectl[16967]: (98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
Sep 01 07:50:25 Kodi-Server apachectl[16967]: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
Sep 01 07:50:25 Kodi-Server apachectl[16967]: no listening sockets available, shutting down
Sep 01 07:50:25 Kodi-Server apachectl[16967]: AH00015: Unable to open logs
Sep 01 07:50:25 Kodi-Server apachectl[16967]: Action 'start' failed.
Sep 01 07:50:25 Kodi-Server apachectl[16967]: The Apache error log may have more information.
Sep 01 07:50:25 Kodi-Server systemd[1]: apache2.service: Control process exited, code=exited status=1
Sep 01 07:50:25 Kodi-Server systemd[1]: apache2.service: Failed with result 'exit-code'.
Sep 01 07:50:25 Kodi-Server systemd[1]: Failed to start The Apache HTTP Server.
-- Subject: Unit apache2.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit apache2.service has failed.
--
-- The result is RESULT.
以下是 lsof -i:80 的结果
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
nginx 7241 root 6u IPv4 1656474 0t0 TCP *:http (LISTEN)
nginx 7241 root 7u IPv6 1656475 0t0 TCP *:http (LISTEN)
nginx 7242 www-data 6u IPv4 1656474 0t0 TCP *:http (LISTEN)
nginx 7242 www-data 7u IPv6 1656475 0t0 TCP *:http (LISTEN)
nginx 7243 www-data 6u IPv4 1656474 0t0 TCP *:http (LISTEN)
nginx 7243 www-data 7u IPv6 1656475 0t0 TCP *:http (LISTEN)
nginx 7244 www-data 6u IPv4 1656474 0t0 TCP *:http (LISTEN)
nginx 7244 www-data 7u IPv6 1656475 0t0 TCP *:http (LISTEN)
nginx 7245 www-data 6u IPv4 1656474 0t0 TCP *:http (LISTEN)
nginx 7245 www-data 7u IPv6 1656475 0t0 TCP *:http (LISTEN)
感谢您的帮助。