[Csync2] ERROR from peer http0: Identification failed!

[Alex Cartwright]

Yep, the output of 'uname -n' matches the config files on both machines. I do 
however realise there was a typo in my previous email; please replace "rrltd" 
with "example" within the csync.cfg file :)

It quite simply is not working; and makes little sense to me.

On Saturday 05 February 2011 12:04:43 Dennis Schafroth wrote:
> Hi,
> 
> I have been hit by this check a couple of times as well.
> 
> My check is whether the hostnames in the config file matches the "uname
> -n".
> 
> This has worked for me on fedora, opensuse and ubuntu boxes.
> 
> However being a Fedora guy for many years, how to set the hostname on
> non-fedora boxes is somewhat of a mystery to me.
> 
> I have been thinking about writing a patched to disable this check.
> 
> ;-Dennis
> 
> On 05/02/2011, at 12.38, Alex Cartwright wrote:
> >> Both then do a forward lookup of that hostname, and if that does not
> >> resolve to the respective remote ip address, that is rejected.
> >> 
> >> We do that to avoid accidentally syncing with the wrong peer
> >> and causing, ahum, major inconvenience.
> >> 
> >> Depending on your setup, forward lookup usually involves looking
> >> at /etc/hosts, so that's why this influences csync2 "authentication".
> > 
> > I'm still a little confused as to just what exactly it is checking. I'm
> > trying it on a smaller scale here using just 1 peer and lots of debug to
> > see what is going on, but none of it makes sense.
> > 
> > This is the output from "example.net":
> >    $ hostname; hostname -f
> >    example
> >    example.net
> >    $ grep -E "example|nas0" hosts
> >    77.xx.xx.xx    example.net example
> >    192.168.0.3     nas0.cluster nas0
> >    $ dig +noall +answer example nas0
> >    example.                  0       IN      A       77.xx.xx.xx
> >    nas0.                   0       IN      A       192.168.0.3
> >    $ less csync2.cfg
> >    # please see the REAMDE file how to configure csync2
> >    nossl * *;
> >    
> >    group standard {
> >    
> >        # Standard group that syncs up common configuration
> >        # that generally all our servers will be using.
> >        key /etc/csync2.key;
> >        auto none;
> >        
> >        host rrltd;
> >        host nas0;
> >        
> >        include /etc/csync2.cfg;
> >        include /etc/vim/vimrc;
> >    
> >    }
> > 
> > And from "nas0.cluster"
> > 
> >    $ hostname; hostname -f
> >    nas0
> >    nas0.cluster
> >    $ grep -E "example|nas0" hosts
> >    192.168.0.3     nas0.cluster nas0
> >    77.xx.xx.xx    example.net example
> >    $ dig +noall +answer example nas0
> >    example.                  0       IN      A       77.xx.xx.xx
> >    nas0.                   0       IN      A       192.168.0.3
> >    $ less csync2.cfg
> >    # please see the REAMDE file how to configure csync2
> >    nossl * *;
> >    
> >    group standard {
> >    
> >        # Standard group that syncs up common configuration
> >        # that generally all our servers will be using.
> >        key /etc/csync2.key;
> >        auto none;
> >        
> >        host rrltd;
> >        host nas0;
> >        
> >        include /etc/csync2.cfg;
> >        include /etc/vim/vimrc;
> >    
> >    }
> > 
> > So why on Earth does the following fail?
> > 
> > $ sudo csync2 -x -P nas0 -vvv /etc/vim/vimrc
> > My hostname is example.
> > Database-File: /var/lib/csync2/example.db
> > Config-File:   /etc/csync2.cfg
> > Match (+): /etc/vim/vimrc on /etc/vim/vimrc
> > Running check for /etc/vim/vimrc ...
> > SQL: SELECT filename from file where filename = '/etc/vim/vimrc'  ORDER
> > BY filename
> > SQL Query finished.
> > Match (+): /etc/vim/vimrc on /etc/vim/vimrc
> > Checking /etc/vim/vimrc.
> > SQL: SELECT checktxt FROM file WHERE filename = '/etc/vim/vimrc'
> > SQL Query finished.
> > SQL: SELECT peername FROM dirty GROUP BY peername ORDER BY random()
> > SQL Query finished.
> > SQL: SELECT filename, myname, force FROM dirty WHERE peername = 'nas0'
> > ORDER by filename ASC
> > SQL Query finished.
> > Connecting to host nas0 (PLAIN) ...
> > Local> CONFIG \n
> > Peer> OK (cmd_finished).\n
> > Local> HELLO example\n
> > Peer> Identification failed!\n
> > While syncing file /etc/vim/vimrc:
> > ERROR from peer nas0: Identification failed!
> > Local> BYE\n
> > Peer> OK (cu_later).\n
> > SQL: SELECT command, logfile FROM action GROUP BY command, logfile
> > SQL Query finished.
> > Finished with 1 errors.
> > 
> > 
> > It makes 100% no sense to me, everything matches up ... or at least I
> > think it does. Any help?
> > 
> > Regards
> > _______________________________________________
> > Csync2 mailing list
> > Csync2 at lists.linbit.com
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