AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0

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

系统环境：  ubuntu14.04

vim /etc/apache2/apache2.conf

最后加入一句 ServerName localhost:80

然后 ：

/etc/init.d/apache2 restart

 * Restarting web server apache2                                         [ OK ] 

root@cy-VirtualBox:~#