sys-svc-dns

Description

Bootstrap and maintain DNS prerequisites for your web stack on Cloudflare.

This role validates credentials and (by default) ensures:

  • A (and optional AAAA) records on the apex (@) for all base SLD domains

  • Wildcard A/AAAA records (*.parent) for parent hosts via sys-dns-wildcards

  • (Optional) CAA records for Let’s Encrypt (kept as a commented block you can re-enable)

Runs once per play and is safe to include in stacks that roll out many domains.

Overview

This role cloudflare DNS bootstrap: parent host A/AAAA (and optional CAA), runs once per play.

Cosmos

The diagram places sys-svc-dns in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph role [sys-svc-dns 💻]
        svc_svc_dns["svc-dns"]
    end

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role’s deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Features

  • Automated provisioning: Configured by Ansible without manual steps.

What it does

  1. Validate the Cloudflare API token (API.cloudflare.api_token) is present (early fail if missing).

  2. Ensure apex A/AAAA exist for every base SLD in SYS_SVC_DNS_BASE_DOMAINS:

    • Writes @  A → networks.internet.ip4

    • Writes @ AAAA → networks.internet.ip6 (only if global and present)

  3. (Optional) CAA records for all base SLDs (commented in the tasks; enable if you want CAA managed here).

  4. Ensure wildcard parent DNS exists (*.parent derived from children):

    • Delegates to sys-dns-wildcards

    • Creates A (and AAAA if enabled) wildcard records on the Cloudflare zone, optionally proxied.

Parent hosts example:
c.wiki.example.com → parent wiki.example.com (plus example.com apex)

Credits

Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).