Apache启动错误，所有日志文件均为空

当我尝试在ubuntu中启动apache2时，它显示以下错误

* Starting web server apache2                                                     
  AH00548: NameVirtualHost has no effect and will be removed in the next release /etc/apache2/ports.conf:8
  AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message
  (98)Address already in use: AH00072: make_sock: could not bind to address 127.0.0.1:8080
  no listening sockets available, shutting down
  AH00015: Unable to open logs
  Action 'start' failed.
  The Apache error log may have more information.
  * 
  * The apache2 instance did not start within 20 seconds. Please read the log files to discover problems

以及

var/log/apache2/

文件

error.log

，

acces.log

文件中的日志文件在清空后未更新

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请帮我解决这个问题。

可能其他服务已经在使用端口8080。跑

# netstat -lnpt

看看是什么