Apache2: Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for

在Ubuntu上装完Apache后，每次启动apache服务器都会得到如下警告：

apache2: Could not reliably determine the server’s fully qualified domain name, using 127.0.0.1 for ServerName

解决办法也很简单：

sudo echo "ServerName localhost" >> /etc/apache2/apache2.conf

或者

sudo vim /etc/apache2/apache2.conf

在里面最后加上一行：

ServerName localhost