On Friday, November 23, 2012 11:05:42 PM Glenn Park wrote:
> On Fri, Nov 23, 2012 at 10:02 PM, Scott Kitterman <post...@kitterman.com> 
wrote:
> > On Friday, November 23, 2012 09:29:08 PM Glenn Park wrote:
> >> On Fri, Nov 23, 2012 at 8:43 PM, Scott Kitterman <post...@kitterman.com>
> > 
> > wrote:
> >> > On Friday, November 23, 2012 07:55:57 PM Glenn Park wrote:
> >> >> Hello,
> >> >> 
> >> >> When I install Postfix using aptitude on a fresh Debian system, an
> >> >> interactive GUI comes up asking me how it wants me to configure
> >> >> postfix.  I'd like to suppress this interface and make it default to
> >> >> "No configuration" (I am automating the installation and have my own
> >> >> configuration files, thank you).  However I can find nothing
> >> >> documented that allows me to do this.  Can anyone help?
> >> > 
> >> > There are some assumptions built into the way the postfix packaging
> >> > interact with debconf that make this a risky thing to do.  See (Debian
> >> > and Ubuntu are the same in this regard):
> >> > 
> >> > https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1027061
> >> 
> >> Pardon my lack of understanding here (I did read that whole
> >> conversation), but I'm a little hazy on what the problem is.  What's
> >> the difference between giving a "No Configuration" answer ahead of
> >> time/by default and doing it with the GUI that is presented?  But are
> >> you saying that it's impossible to suppress anyway?
> >> 
> >> Rather, you seem to be suggesting that upon update, we may see our
> >> configuration changed out from under us?  We are not using puppet or
> >> anything like that.  Config is by hand.
> > 
> > Yes.  The postfix package is designed to be configured by the debconf
> > (Debian Configuration) system.  If, in the internal status of the debconf
> > system, postfix is marked as "No configuration" via there being no status
> > entry, so there's currently no way to distinguish between "desired
> > configuration is 'No configuration'" and "Don't do anything, something
> > else will handle it."
> > 
> > I have not had time to research this issue.  I expect it's reasonably
> > tractable to fix, but I don't know when I'll be able to get to it.
> > 
> > What I usually do is pick "Internet site" and then modify things from
> > there. If you do that once, even if you copy your config files over the
> > provided ones, you won't have to worry about your changes getting
> > reverted.
> 
> Woa, wait, so even if I choose "No configuration" in the GUI, my
> config may be overwritten?
> 
> If I have to choose "Internet site" in order to be able to put my own
> config files in place (and not have them overwritten), that's fine.
> But my question is how I can do that unattended?

I believe you can do this using preseeding.  Preseeding is discussed in the 
context of a new system installation here: 
http://wiki.debian.org/DebianInstaller/Preseed

Scott K

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