Ubuntu 环境，当apache2重启提示：
* Starting web server apache2 apache2: Could not reliably determine the server's fully qualified domain name, ... waiting apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
解决的问题是：
$sudo vim /etc/apache2/sites-available/default
打开default文件后，在default文件顶端(第一行)加入：
ServerName www.mobibrw.com
重启Apache2就不会提示上述错误了。
参考链接
Ubuntu Apache2重启提示could not reliably determine the server’e fully…问题解决