Re: DNS on minimal new installation
Greg Wooledge <greg@wooledge.org> wrote:
> On Thu, Oct 24, 2024 at 20:16:30 +0100, Chris Green wrote:
> > It works fine though. The /etc/resolv.conf is:-
> >
> > domain zbmc.eu
> > search zbmc.eu
> > nameserver 192.168.1.1
> >
> > which simply means all DNS gets passed to my LAN's DNS server. Is that
> > what one gets on a minimal installation, no explicit DNS server or
> > resolv management? I'm very happy with this, it's very simple and the
> > backup system isn't going to make a lot of DNS queries such that it
> > needs a DNS cache. Have I understood this OK?
>
> In a typical installation, on a typical network, you will get your DNS
> configuration via DHCP, from whatever is acting as your network's DHCP
> server. In your case, I'm guessing it's a router.
>
> Check the /etc/network/interfaces file and see if you have your interface
> configured for dhcp. I'm guessing you do.
>
> With DNS configuration being provided by DHCP, any changes you make to
> the /etc/resolv.conf file will be overwritten every time the DHCP client
> daemon renews its DHCP lease. This will usually happen once or twice
> per day.
>
> If you'd like to set up a local caching DNS nameserver, then you'll need
> to work out a way to change your resolv.conf file without your changes
> being overwritten. There are many different approaches to this.
>
> See <https://wiki.debian.org/resolv.conf> to see some ways of doing it.
Ah, thank you, that link to the wiki tells me what I need to know.
--
Chris Green
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