root@komiles-VirtualBox:/etc/apache2/sites-available# service apache2 restart
 * Restarting web server apache2                                                                          apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
 ... waiting apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName

解决步骤：
为了解决这个问题，你需要编辑下面这个httpd.conf文件，打开它并根据如下操作进行编辑：

默认的httpd.conf是个空文件，现在向里面加入如下内容：