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Wed, 24 Sep 2008

/Admin/backups/misc: Easy Linux Off-site Backups

Probably the lowest-tech route is to use tar, gpg, and some free file storage service. For instance, at the root prompt (since we will be backing up some priveleged files) lets gather all the files up into one tar archive file, beginning with the /home directory:

tar -cvf Backup20080901.tar /home

Append the /etc directory:

tar -rvf Backup20080901.tar /etc

Now encrypt the result with gpg (you will be prompted for a password):

gpg -c Backup20080901.tar

Now upload the file to your favorite file storage service.

Some storage options:

1. Should you have access to an off-site server:

scp Backup20080901.tar.gpg www.urltoserver.com:
This may be a very big file and a very long transfer. If there is an interruption, don't start over again from scratch. We can use rsync to resume an interrupted scp transfer. Just replace "scp" in the last command with "rsync --partial --progress --rsh=ssh", ie.
rsync --partial --progress --rsh=ssh Backup20080901.tar.gpg www.urltoserver.com:

2. Exchange encrypted backups with a friend:

Since both ends encrypt, trust is not even an issue. But how to exchange potentially very large files?
If both of you have access to a UNIX environment where you can unblock / forward ports, sendfile[1] sounds REALLY cool.
If one of you has root on a UNIX server, F*EX[2] also looks like an option.

[1] http://fex.rus.uni-stuttgart.de/saft/sendfile.html
[2] http://fex.rus.uni-stuttgart.de/

posted at: 04:47 | path: /Admin/backups/misc | permanent link to this entry

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Wed, 24 Sep 2008

Some storage options: