1. ~$ sudo /etc/init.d/apache2 restart

2. * Restarting web server apache2

3. apache2: Could not reliably determine the server's fully qualified

4. domain name, using 127.0.1.1 for ServerName

5. ... waiting apache2: Could not reliably determine the server's fully

6. qualified domain name, using 127.0.1.1 for ServerName

sudo gedit /etc/apache2/httpd.conf

httpd.conf为空白文档，填入下面内容。

ServerName 127.0.0.1

再次重启

sudo /etc/init.d/apache2 restart