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Ubuntu Server 14.10 中使用 2 个服务器进行简单备份

tag-icon • tag-icon backup rsync
Ubuntu Server 14.10 中使用 2 个服务器进行简单备份

我想知道如何从一台服务器到另一台服务器进行简单备份。

我有 2 台服务器（一台用于网站，另一台是空的），我将通过 SSH 和 SFTP 在空服务器中创建的家庭帐户内的文件夹中创建 html 文件夹（apache 的 /var/www/html/）。

然后我会进行同步（我听说过 rsync 命令）。每天同步一次进行备份。

备份必须是一份，并且如果整个服务器由于任何问题而关闭，则同步不会在空服务器中删除。

有可能吗？

如何才能使这个过程安全又快速？

感谢整个 Ubuntu 社区！！！

答案1

   Rsync is a fast and extraordinarily versatile file  copying  tool.   It
   can  copy  locally,  to/from  another  host  over  any remote shell, or
   to/from a remote rsync daemon.  It offers a  large  number  of  options
   that  control  every  aspect  of  its behaviour and permit very flexible
   specification of the set of files to be copied.  It is famous  for  its
   delta-transfer  algorithm,  which  reduces the amount of data sent over
   the network by sending only the differences between  the  source  files
   and  the  existing  files in the destination.  Rsync is widely used for
   backups and mirroring and as an improved copy command for everyday use.

   Rsync finds files that need to be transferred  using  a  "quick  check"
   algorithm  (by  default) that looks for files that have changed in size
   or  in  last-modified  time.   Any  changes  in  the  other   preserved
   attributes  (as  requested by options) are made on the destination file
   directly when the quick check indicates that the file’s data  does  not
   need to be updated.

来源：man rsync

拉和推两种方法均可用...

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