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

Chris Green cl at isbd.net
Wed Sep 1 18:45:59 UTC 2021

Thanks for the replies.

It does seem that any sort of live failover for DHCP and/or DNS turns
out to be quite complex.

I am thus thinking that simply having a reasonably quick to start
'cold' backup makes sense.  I really don't mind if my LAN is DNS and
DHCP'less for an hour or so, it can cope!

The best idea (and I haven't really thought about the practicalities
yet) I have had so far is a dual boot Raspberry Pi or similar that
reboots itself to the 'other' OS in the small hours, backs up the
'main' OS (which is the dnsmasq server) and then reboots back to the
'main' server.  One then has a daily cloned image of the dnsmasq
server which can be plugged into backup hardware if the server fails. 

Chris Green

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