[Sugar-devel] Sugar-Server enhancement

Manash Raja mpdmanash at gmail.com
Mon Apr 18 06:15:03 EDT 2016

Hi James,

The feature will ensure that ds-backup will work. Here is how:

ds backup runs rsync over ssh using this command
* /usr/bin/ssh -o "PasswordAuthentication no" -o "StrictHostKeyChecking no"
-i ~/.sugar/default/owner.key -l <serial> <server_address>*
I found this from the source code of ds-backup you provided (ds-backup.py)

It ignores known_hosts file using "StrictHostKeyChecking no", and use
private/public key instead. So, we just have to ensure that it gets proper
<serial_number> and <server_address>.
<serial> is taken from /ofw in case of XOs (static serial machines) or from
/desktop/sugar/soas_serial schema variable.
<server_address> is taken from /desktop/sugar/backup_url schema variable.

Hence we set the appropriate values into /desktop/sugar/soas_serial and
/desktop/sugar/backup_url during registration from schoolserver.py to
ensure ds-backup functionality.

On Mon, Apr 18, 2016 at 3:08 PM, James Cameron <quozl at laptop.org> wrote:

> On Sun, Apr 17, 2016 at 02:54:54AM +0530, Manash Raja wrote:
> > Hi,
> > [...]
> > I have tested that we can add to .ssh/config
> > Host custom_server_name
> >     HostName
> >     PasswordAuthentication no
> >     StrictHostKeyChecking no
> >     IdentityFile ~/.sugar/default/owner.key
> >     User <serial>
> >
> > [...]
> >  3. How do we expect a human user to use ssh? the longer command or
> >     .ssh/config based command? or simply ssh user at server with
> >     constant modifications to known_hosts.
> Human users of SSH would be rare.
> Perhaps the human user of SSH may be ignored, concentrating instead on
> ensuring the ds-backup will complete even if the host key has changed.
> --
> James Cameron
> http://quozl.netrek.org/
> _______________________________________________
> Sugar-devel mailing list
> Sugar-devel at lists.sugarlabs.org
> http://lists.sugarlabs.org/listinfo/sugar-devel
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