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Re: set domain name in Debian `

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> On Nov 14, 2016, at 6:27 AM, Greg Wooledge <wooledg@eeg.ccf.org> wrote:
> 
> On Sat, Nov 12, 2016 at 08:50:46AM -0700, Glenn English wrote:
>>> On Nov 12, 2016, at 3:25 AM, Andy Smith <andy@strugglers.net> wrote:
>>> I am 95% confident that the reason that Glenn's system thinks the
>>> FQDN is "www.slsware.dmz" is because the first instance of "srv" in
>>> the /etc/hosts is:
>>> 
>>>>> 192.168.2.203	www.slsware.dmz 		wsd srv

Who'da thunk it -- it's looking at the aliases in hosts, and grabbing the first one where the alias matches the hostname. If it sees any. I thought it was looking at IPs. But the way I had it set up, it wouldn't have worked that way either.

DNS wouldn't have worked either, if it's doing a reverse lookup. Not with this ghastly IP net I'm setting up -- there are several services on one server, so FTP and WWW both have the same IP. It would just do the first one, I suspect.

I rebooted with a perfectly good and unique IP and FQDN and an alias that didn't match the hostname, and it came up with an empty domain. I put in an alias (unique) the same as the hostname, and there was the domain. I didn't even have to reboot (Jessie, if it matters).

Thanks very much to all. This has been an educational experience. I guess I've been lucky with positioning for these 15 years.

I'm not going to toss hosts, though. I need to be able to move around the nets when DNS is down (or misconfigured). I'm just going to be a little bit more careful...

-- 
Glenn English

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set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-11 21:50 +0100
  Re: set domain name in Debian ` Greg Wooledge <wooledg@eeg.ccf.org> - 2016-11-11 22:00 +0100
    Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-11 23:10 +0100
      Re: set domain name in Debian ` Greg Wooledge <wooledg@eeg.ccf.org> - 2016-11-11 23:40 +0100
        Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 04:50 +0100
      Re: set domain name in Debian ` Joe <joe@jretrading.com> - 2016-11-11 23:50 +0100
        Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 01:40 +0100
  Re: set domain name in Debian ` Andy Smith <andy@strugglers.net> - 2016-11-12 06:00 +0100
    Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 07:40 +0100
      Re: set domain name in Debian ` Andy Smith <andy@strugglers.net> - 2016-11-12 07:50 +0100
        Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 10:20 +0100
          Re: set domain name in Debian ` Andy Smith <andy@strugglers.net> - 2016-11-12 11:30 +0100
            Re: set domain name in Debian ` Brian <ad44@cityscape.co.uk> - 2016-11-12 13:40 +0100
            Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 17:10 +0100
              Re: set domain name in Debian ` sunrise@mailbug.com - 2016-11-12 19:40 +0100
                Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 20:30 +0100
              Re: set domain name in Debian ` Greg Wooledge <wooledg@eeg.ccf.org> - 2016-11-14 14:30 +0100
                Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-14 23:00 +0100
                Re: set domain name in Debian ` David Wright <deblis@lionunicorn.co.uk> - 2016-11-14 23:40 +0100
                Re: set domain name in Debian ` Greg Wooledge <wooledg@eeg.ccf.org> - 2016-11-15 14:10 +0100
                Re: set domain name in Debian ` Greg Wooledge <wooledg@eeg.ccf.org> - 2016-11-15 15:20 +0100
                Re: set domain name in Debian ` Brian <ad44@cityscape.co.uk> - 2016-11-15 16:00 +0100
                Re: set domain name in Debian ` Greg Wooledge <wooledg@eeg.ccf.org> - 2016-11-15 16:20 +0100
                Re: set domain name in Debian ` Brian <ad44@cityscape.co.uk> - 2016-11-15 16:40 +0100
                Re: set domain name in Debian ` David Wright <deblis@lionunicorn.co.uk> - 2016-11-15 17:10 +0100
                Re: set domain name in Debian ` Brian <ad44@cityscape.co.uk> - 2016-11-15 15:20 +0100
                Re: set domain name in Debian ` Joe <joe@jretrading.com> - 2016-11-15 16:10 +0100
                Re: set domain name in Debian ` Brian <ad44@cityscape.co.uk> - 2016-11-15 16:50 +0100
                Re: set domain name in Debian ` Joe <joe@jretrading.com> - 2016-11-15 17:30 +0100
  Re: set domain name in Debian ` Henrique de Moraes Holschuh <hmh@debian.org> - 2016-11-12 16:50 +0100
    Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 18:20 +0100
      Re: set domain name in Debian ` Henrique de Moraes Holschuh <hmh@debian.org> - 2016-11-12 19:40 +0100
        Re: set domain name in Debian ` Glenn English <ghe2001@gmail.com> - 2016-11-12 22:40 +0100

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