Re: cron'ing rsync over ssh

>> * Jesse Burkhardt <jesse@skybuilders.com> [2003-03-19 04:03]:

I'm almost done setting up a special backup system that needed this very thing. Here's a sketch of what you need to do:

Our situation - create incremental backups of several critical file systems using rsync (http://www.mikerubel.org/computers/rsync_snapshots).

1. Create a key specifically for rsync on the backup host as root:

   # ssh-keygen -t dsa -C '' -N '' > ~/.ssh/rsync-key

2. Copy the rsync public key file from the backup host to the machines

   containing the desired file systems:

   # foreach i (machine1 machine2 machine3)    > ssh $i cat copy-of-rsync-key.pub >> ~/.ssh/authorized_keys    > end

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3. On the backup host, create a shell script for ssh-agent that does the

   backup:

   #!/bin/sh

   #
   # This script is run by ssh-keygen to a) add the private key to ssh-agent
   # and b) run the backup using rsync.
   #

   ssh-add $HOME/.ssh/rsync-key

   for i in machine1 machine2 machine3; do      rsync -az $i:/some/file/system /local/directory    done

4. Run the backup process (where backup.sh is the shell script described

   above):

   # ssh-agent backup.sh

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