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Harden NOMAD Pi-hole DNS binding

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Fizzlepoof
2026-05-15 16:09:03 +00:00
parent 1ad5035960
commit bd065445cd
3 changed files with 34 additions and 2 deletions
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16
pihole/nomad/README.md
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@@ -14,3 +14,19 @@ cd /opt/pihole-nomad
cp .env.example .env
bash bin/prepare_nomad.sh --up
```
Host note:
- If `systemd-resolved` is using the local DNS stub on port 53, disable the stub listener on NOMAD before trusting Pi-hole for live DNS:
```bash
sudo mkdir -p /etc/systemd/resolved.conf.d
cat <<'EOF' | sudo tee /etc/systemd/resolved.conf.d/99-pihole.conf
[Resolve]
DNSStubListener=no
EOF
sudo systemctl restart systemd-resolved
sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf
```
Pi-hole on NOMAD is pinned to `enp5s0` with `FTLCONF_dns_interface=enp5s0` and `FTLCONF_dns_listeningMode=SINGLE` so it answers cleanly on the LAN IP without fighting Docker bridge noise.