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What to use as DHCP server?
(lemmy.world)
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this post was submitted on 11 Jul 2023
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To me it sounds like you don't have a DHCP problem at all, the issue is no website can be resolved when your DNS is down (PiHole).
You really have two options:
or
https://stevendiver.com/2020/02/21/isc-dhcp-failover-configuration/
Personally, I like to keep the wife happy so I have option 2 at home, that way the internet never goes down when I tinker.
Edit: Didn't notice you said your router can't issue out two DNS servers. I've never heard of that.
Keepalived (or similar CARP or VRRP virtual IP system) would allow you to run 2 piholes that share the same virtual IP.
If the main goes down, the backup will take over the virtual IP
Lol, this is peak selfhosted. The obvious solution is to get a router/DHCP server that is normal enough to push out two DNS servers.
The selfhosted way is to set of keep alived or a load balancer, because why the fuck not.
Nice, but you don't need this per se. If you have two Piholes doing DNS, one of them can do DHCP and push the two pihole DNS server addresses. If the one with DHCP goes down temporarily you will not get a new addresses, but DNS resolution continues one the one running.
Even if your router can issue two DNS servers you shouldn't add a second that's not a pihole.
Otherwise a client will just fail over any blocked lookups to the secondary, negating the purpose of a pihole.
This would be great except OP said that their router can't push 2 DNS addresses. Otherwise, ya, redundant services is always best
Thanks, didn't notice that. I edited my comment to reflect.
No worries, I had the same thought at first and was very confused for a minute
Ugh. When I moved into my new place I bought a NetGear Orbi system to hold me over until I got my Ubiquiti gear put in place. Never again.