Amanda Configuration for Asymmetric encryption Post: 302316148

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Operating Systems Linux Red Hat Amanda Configuration for Asymmetric encryption Post 302316148 by choogendyk on Thursday 14th of May 2009 07:59:20 AM

05-14-2009

Registered User

I don't have much time right now. I'll try to help, but you have to help yourself as well. You obviously changed more than just adding encryption when you modified your working system. You deleted other things from the configuration as well, rather than just adding something. I believe it is those deletions that are causing the specific errors you are getting. The error messages point to a specific line number in /etc/amanda/template.d/dumptypes. Look at that and see what it is referring to.

Did you keep a copy of your working system? Since you say it was working, you must have backups, right? Also, typically, when you radically edit a configuration file, you copy it first. For example, `cp -p amanda.conf amanda.conf.backup` before doing `vi amanda.conf`. So, look at your backup and get back things you deleted, or just recover the whole thing and then add the encryption without deleting anything.

choogendyk

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LEARN ABOUT DEBIAN

amcrypt

AMCRYPT(8)						  System Administration Commands						AMCRYPT(8)

NAME

       amcrypt - reference crypt program for Amanda symmetric data encryption

SYNOPSIS

       amcrypt

DESCRIPTION

       amcrypt requires aespipe, uuencode and gpg to work. Aespipe is available from : http://loop-aes.sourceforge.net

       amcrypt will search for the aespipe program in the following directories: /usr/bin:/usr/local/bin:/sbin:/usr/sbin.

       amcrypt calls amaespipe and pass the passphrase through file descriptor 3. The passphrase should be stored in ~amanda/.am_passphrase.

HOW TO CREATE ENCRYPTION KEYS FOR AMCRYPT

       1. Create 65 random encryption keys and encrypt those keys using gpg. Reading from /dev/random may take indefinitely long if kernel's
       random entropy pool is empty. If that happens, do some other work on some other console (use keyboard, mouse and disks).

       head -c 2925 /dev/random | uuencode -m - | head -n 66 | tail -n 65  | gpg --symmetric -a > ~amanda/.gnupg/am_key.gpg

       This will ask for a passphrase. Remember this passphrase as you will need it in the next step.

       2. Store the passphrase inside the home-directory of the AMANDA-user and protect it with proper permissions:
       echo my_secret_passphrase > ~amanda/.am_passphrase
       chown amanda:disk ~amanda/.am_passphrase
       chmod 700 ~amanda/.am_passphrase

KEY AND PASSPHRASE

       amcrypt uses the same key to encrypt and decrypt data.

       It is very important to store and protect the key and the passphrase properly. Encrypted backup data can only be recovered with the correct
       key and passphrase.

SEE ALSO

       amanda(8), amanda.conf(5), aespipe(1), amaespipe(8), gpg(1)

       The Amanda Wiki: : http://wiki.zmanda.com/

AUTHOR

       Kevin Till <kevin.till@zmanda.com>
	   Zmanda, Inc. (http://www.zmanda.com)

Amanda 3.3.1							    02/21/2012								AMCRYPT(8)