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Re: Beginner's questions

From: Thomas Harold <tgh_at_tgharold.com>
Date: 2007-05-30 06:02:27 CEST

Ryan Schmidt wrote:
> On May 28, 2007, at 03:35, Holger Schulz wrote:
>> 2. Currently I have a G4 desktop which holds the repositories. I also
>> have a PowerBook which I you for work at home and from outside. At
>> home I connect the desktop from the book via its Bonjour name
>> <something>.local, to connect it within my local net. From outside I
>> have to use a global name (in this case via dyndns). So the problem
>> appears that the same repository might apear under two different
>> names. How can I tell the working copy that its repository has "moved"?
> In the working copy:
> svn switch --relocate $OLDPREFIX $NEWPREFIX
> where $OLDPREFIX and $NEWPREFIX are the parts of the URL that changes.
> For example, if you're relocating from svn://foo.local/repo to
> http://foo.dyndns.org/repo then you could issue
> svn switch --relocate svn://foo.local http://foo.dyndns.org
> However, I highly recommend that you set up a single hostname under
> which you can access the repository regardless of where your laptop is
> located. You will find this much easier, and if you want to use
> svn:externals, this is the only way it will work everywhere. For
> example, if you have a DNS server on your local network at home, you
> could set up foo.dyndns.org to be a CNAME to foo.local there, and for
> the rest of the world it will still be your machine's public IP.


Wait, I can setup a CNAME on a DNS server for a domain that I'm not
authoritative for? How's that work? You've hit upon something that
I've been meaning to fix for a while for our users.

Folks who are rarely in the office are accessing the repository via:


Where svn.example.com maps to the public IP address of our firewall, and
we DNAT (port-forward) 22/tcp (ssh port) to the internal machine at
address The SOA servers for svn.example.com are outside
the firewall at a public service (DNSMadeEasy).

Folks inside the firewall can use svn.hq.example.com, which points at And the hq.example.com. is not exported outside of the

We've been having users edit their C:\Windows\System32\Drivers\Etc\hosts
file and add a manual mapping for svn.example.com to point at for the weeks when they're in the office.


Is this a special feature of a particular DNS server (i.e. BIND) or is
it something that can be accomplished via almost any DNS server
software? (Pity that all of my BIND books are packed away in boxes.)

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Received on Wed May 30 06:03:05 2007

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