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Re: [OT] Non-interactive Debian (aptitude) install

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  • Scott Kitterman
    ... I believe you can do this using preseeding. Preseeding is discussed in the context of a new system installation here:
    Message 1 of 7 , Nov 24, 2012
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      On Friday, November 23, 2012 11:05:42 PM Glenn Park wrote:
      > On Fri, Nov 23, 2012 at 10:02 PM, Scott Kitterman <postfix@...>
      wrote:
      > > On Friday, November 23, 2012 09:29:08 PM Glenn Park wrote:
      > >> On Fri, Nov 23, 2012 at 8:43 PM, Scott Kitterman <postfix@...>
      > >
      > > 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
    • Glenn Park
      ... Thanks, Scott
      Message 2 of 7 , Nov 24, 2012
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        On Sat, Nov 24, 2012 at 8:54 AM, Scott Kitterman <postfix@...> wrote:
        > On Friday, November 23, 2012 11:05:42 PM Glenn Park wrote:
        >> On Fri, Nov 23, 2012 at 10:02 PM, Scott Kitterman <postfix@...>
        > wrote:
        >> > On Friday, November 23, 2012 09:29:08 PM Glenn Park wrote:
        >> >> On Fri, Nov 23, 2012 at 8:43 PM, Scott Kitterman <postfix@...>
        >> >
        >> > 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

        Thanks, Scott
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