Re: rsync causing disk sleeps and loss of apps

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On Sun, 2011-01-30 at 15:23 +0000, Anne Wilson wrote:
> I'm trying to get rsync to operate on a number of directories, but not
> in a 
> mirror situation where I can easily use an existing app.  I therefore
> wanted 
> to set up a shell script which can be run over the network using
> keychain to 
> provide the necessary passwords.  On a single box it works perfectly,
> but of 
> course the network makes it more complicated.
> 
> Part of the problem may be that I have followed too many how-tos, and
> set 
> things up in a way that fight.  First, to get keychain correctly
> running -
> 
> Keychain is set up in .bash_profile and works.  Then I read that if
> you are 
> going to run a script with cron you need to eval keychain within your
> script 
> as it works in its own restricted environment.  This makes sense - but
> does 
> that cause problems when I run tests in bash, since keychain is
> already 
> running?

I think you're going about this the wrong way. AFAIK keychain is the KDE
equivalent to Gnome's seahorse, i.e. an encryption manager designed to
handle multiple keys for online sessions in a user-friendly way. However
what you actually need for secure backup with rsync is simply SSH using
RSA authentication, which doesn't require a password. Just generate a
key pair (man ssh) and use the id_rsa file for authentication, running
the cronjob as yourself and not root.

BTW I recommend rsnapshot rather than raw rsync for backups, but both
will work.

poc

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