Just to clarify: My question is about using rrsync on the remote client
to protect it (as I explained) from a potentially currupted server.
Obviously, the standard rrsync isn’t compatible with rsync-bpc. So I’m
curious about Guillermo’s adjusted version of rrsync!
What I did got so far:
* BackupPC works without any problem with standard rsync on client
side (i.e. without restriction to the specific ssh-key).
* The BackupPC-user on the server can sync using standard rsync (done
manually via terminal – not rsync-bpc) with rrsync set up on the
client (put rrsync as forced command in front of the specific server
key in authorized_keys).
* Though, BackupPC won’t work within the same setup with rrsync forced
on the client. (Error log says only: "Got fatal error during xfer
(No files dumped for share …)"
Greetings
Am 10.02.21 um 15:45 schrieb backu...@kosowsky.org:
> Adam Goryachev via BackupPC-users wrote at about 23:53:38 +1100 on Wednesday,
> February 10, 2021:
> >
> > On 10/2/21 02:56, Felix Wolters wrote:
> > > Hello!
> > >
> > > Let me first thank you for providing BackupPC as open source software. I
> > > appreciate it a lot and consider it to be one of the most usefull backup
> > > systems out there!
> > >
> > > I’d like to use it with restricted access to the client, so a
> > > potentially corrupted BackupPC server wouldn’t be able to damage the
> > > client machine and data. Using rsync for transfer with a Linux client,
> > > rrsync (restricted rsync – as part of the rsync package) would be a
> > > straigt forward solution to restrict an incoming ssh connection to only
> > > rsync and only a given folder which I will set read only – which would
> > > perfectly do the trick. Unfortunately, this doesn’t seem to work with
> > > BackupPC over rsync, as far as I can see. I’m positive rrsync generally
> > > works on the client as I use it successfully with plain rsync over ssh
> > > on the same machine.
> > >
> > > I’ve seen rare information on the internet about this, and it wouldn’t
> > > help me so far.
> > >
> > > Thank you for some help or instruction!
> >
> > Hi Felix,
> >
> > I'm not familiar with rrsync, but perhaps the first step would be to try
> > it and see. If it doesn't work, then include some logs and what debug
> > steps you have taken, or other information that might help us to help you.
> >
> > Regards,
> > Adam
>
> I think it depends if 'rrsync' needs to run on the client or server
> sides.
> - If it runs on the (remote) client side and is compatible with backuppc
> protocols then it may work.
>
> - If it runs on the (local) server side then there is no hope for it
> to work as backuppc uses its own patched version of rsync, called
> rsync-bpc.
>
>
>
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