homelab/docs/Concepts/DNS.md
vincent b54420c0d9
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2023-11-01 19:53:42 +01:00

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Architecture DNS

flowchart LR
  subgraph External
  externalRecursor[recursor]
  GandiDns[ hetzner ducamps.win]
  end
  subgraph Internal
  pihole[pihole]--ducamps.win-->NAS
  pihole--service.consul-->consul[consul cluster]
  pihole--->recursor
  recursor--service.consul-->consul
  DHCP --dynamic update--> NAS
  NAS
  recursor--ducamps.win-->NAS
  consul--service.consul--->consul
  clients--->pihole
  clients--->recursor
  end
  pihole --> externalRecursor
  recursor-->External

Detail

Pihole container in nomad cluster is set as primary DNS as add blocker secondary DNS recursore is locate on gerard

DNS locate on NAS manage domain ducamps.win on local network each recursor forward each request on ducamps.win to this DNS.

Each DNS forward service.consul request to the consul cluster. Each consul node have a consul redirection in systemd-resolved to theire own consul client

a DHCP service is set to do dynamic update on NAS DNS on lease delivery

external recursor are set on pihole on cloudflare and FDN in case of recursors faillure