[Dnsmasq-discuss] How do others provide backup for their DNS? Ideas wanted

Hannu Napari napo at iki.fi
Tue Aug 31 15:23:49 UTC 2021

I am running the dnsmasq in a docker container. The image is built for
multiple architectures making it easy to switch from
platform to another if the need arises. Dnsmasq configuration is on a
docker volume, so the image itself does not have any
stored configuration. My config is also stored encrypted in my private
github repo, so I can easily access it. Docker
volume with the config on a glusterfs would be a feasible solution as well.

//Hannu Napari

On Tue, Aug 31, 2021 at 4:07 PM Chris Green <cl at isbd.net> wrote:

> I run dnsmasq on a Raspberry Pi to provide DHCP and DNS services on my
> home LAN. It's just very handy having names for all devices rather
> than having to use IP addresses.
> A few weeks ago the Pi died (or, more accurately, the SD card it was
> running on died) and it took me quite a while to get things back
> together again (like half a day or so, mostly down to trying to rush
> things).  This isn't "mission critical", nothing awful happened when
> we didn't have the Pi providing DNS for half a day but it was 'messy'.
> So, I've been wondering how I can help myself sort things out more
> easily and quickly if it happens again.  What do others do?
> The ways I can think of are:-
>     Have an 'image' SD card of the Pi kept up to date somehow so that
>     I can either change the SD card in the running Pi or use another
>     Pi in place of it.  Problem is how to keep the image up to date.
>     Have a 'warm backup' dnsmasq running on another system.  There is
>     another Pi on the LAN and also a desktop server both of which are
>     on all the time.  How easy is it to replace one dnsmasq system
>     with another on the LAN?
>     Any other obvious ways?
> Thanks for any ideas.
> --
> Chris Green
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