Merge pull request #11 from LCTT/master

update
delete source file
delete source file

删除原文
翻译完成

这篇文章，之前应该还有一篇，本来要一起发上来的，群里面催了一下，就算了，这篇先发
翻译完成
Merge pull request #2118 from SPccman/master

How to Setup Bind Chroot DNS Server on CentOS 7.0 VPS & How to create a custom backup plan for Debian with backupninja