Currently have nice long docker compose file that hosts my PiHole V6 container (along with a bunch of other containers) however, reason i ask this question is because whenever I go to pull an updated image and recreate the container I experience about 20 minutes of no DNS resolution which to my knowledge is due to the NTP clock being out of sync.
What’s the best way to host a DNS sinkhole/resolver that can mitigate this issue?
Was thinking of utilizing Proxmox & LXC but I suspect I’ll get the same experience.
Update: Turns out PiHole doesn’t support two instances, I got both of them on separate devices also set the 2nd DNS server in my routers WAN & LAN DNS settings which did in fact split DNS between both instances however, I lost access to my routers web-ui, my Traefik instance & reverse proxies died and I lost all internet access.
So, don’t do what I did.
Update 2: So everything I said in my first update let’s disregard that, turns out I had my router forcing all DNS to PiHole server 1 which caused my issues mentioned above.
Two servers appears to work!
Like this, baby:
services.adguardhome = { enable = true; mutableSettings = false; openFirewall = true; settings = { dns = { # Web Interface bootstrap_dns = ["9.9.9.9" "149.112.112.112"]; upstream_dns = ["https://dns.quad9.net/dns-query"]; fallback_dns = ["tls://dns.quad9.net"]; }; filters = [ { name = "AdGuard DNS filter"; url = "https://adguardteam.github.io/HostlistsRegistry/assets/filter_1.txt"; enabled = true; } ]; filtering = { blocked_services = { ids = [ ]; }; protection_enabled = true; filtering_enabled = true; rewrites = [ ]; };Deploy to the main home server, and the backup instance. NixOS is fucking awesome. No sync tool needed.