jakman85andClaude Opus 5 4080065aa7 feat(dns): exposure: internal can no longer publish a public record
docs/09 R-DNS-03 and schemas/renderer-contract.md both said an `internal`
service renders no public DNS record. Nothing enforced either sentence.
ExternalDNS's `gateway-httproute` source admitted EVERY HTTPRoute on the shared
Gateway, so six `exposure: internal` services — jackett, pihole, qbittorrent,
radarr, semaphore, sonarr — published `<name>.home.keithjackson.dev` into the
public authoritative Cloudflare zone answering with the Gateway VIP
192.168.2.20. That published the internal subnet, the Gateway VIP and a full
service inventory to anyone who could guess a label, and made each of those
names a DNS-rebind primitive — which is why the SOHO router strips RFC1918
answers and LAN clients need per-client dnsmasq overrides to reach their own
services.

THE MECHANISM, established against the DEPLOYED version rather than from
memory. The live prod Deployment runs
registry.k8s.io/external-dns/external-dns:v0.21.0. In v0.21.0,
source/annotations/processors.go IsControllerMismatch() skips a source object
whose `external-dns.alpha.kubernetes.io/controller` annotation is present and
!= its own `dns-controller`, and source/gateway.go applies that check inside
Endpoints() BEFORE any hostname is resolved; source/service.go applies the
identical check, covering the second configured source. catalog/render.py now
emits that annotation on every HTTPRoute it renders for an `internal` service,
derived from `exposure` alone — no per-service list — so a service that omits
`exposure` inherits the internal default and is unpublishable too. Verified
LIVE on prod on a throwaway hostname with no existing record at risk: the
annotated route published nothing, and adding the annotation to a route that
already had a record produced action=DELETE for both its A record and its `a-`
TXT registry entry one ~60s reconcile later, moving nothing else in the zone.

WHY PER-RESOURCE AND NOT A CLUSTER-WIDE OPT-IN FILTER. `labelFilter` is the
stronger default posture and v0.21.0 supports it for both configured sources,
but nine publishing objects here are hand-authored platform/apps manifests with
no `exposure` field, seven of which hold live records (auth, crafty, crafty-mc,
grafana, headlamp, the apex, unifi). An opt-in filter deletes all seven at
once, and whether each should be publicly resolvable is an operator decision
per name. Per-resource exclusion has exactly the blast radius of the defect;
the seven are enumerated in a shrink-only register so the unadjudicated set
cannot grow silently, and the filter stays available as hardening afterwards.

`policy: sync`, `txtOwnerId` and `domainFilters` are UNTOUCHED. Per-resource
exclusion only ever removes an object from this instance's view, so nothing
here makes prod capable of deleting a record it does not own.

WHAT THIS DELETES, and it is not reversible by a revert alone: 12 records — the
A record and the `a-`-prefixed TXT registry entry for each of jackett, pihole,
qbittorrent, radarr, semaphore and sonarr. The zone has no
`*.home.keithjackson.dev` wildcard and `*.keithjackson.dev` does not match two
labels, so each becomes a public NXDOMAIN with no fallback. The complete
pre-state is captured at the authority and committed as a recovery baseline
(.standup-dns/dns-20260914-pre-externaldns-scope.txt), with the restore
procedure for both halves of a record.

MERGE ORDER IS NOT OPTIONAL: feat/pihole-lan-dns-authority must land and be
verified first. Removing these records while the LAN still depends on them,
with the router stripping RFC1918 and no internal authority yet, breaks name
resolution outright.

The five `exposure: public` services are LEFT UNCHANGED and still answer with
the Gateway VIP, so they remain publicly unreachable. That is two open operator
decisions, both written up in platform/externaldns/helmrelease.yaml: what
address they should answer with (136.51.115.252 is the legacy non-k3s stack
serving a placeholder cert, not established as correct for this cluster), and
how to separate them from the non-public names that share the Gateway —
because in v0.21.0 the target annotation is read only from the GATEWAY and a
ListenerSet, never from an HTTPRoute, so a per-service override is not
expressible while they all attach to `shared`. No knob is added for it yet: one
that cannot take effect invites someone to set it and expect one.

Guard: conformance/tests/l0-static/internal-services-publish-no-public-dns, a
whole-repo-scoped L0 static check (no ci/l0.sh stage — the
whole-repo-invariants-wired meta-test forbids one). It asserts both directions
(present on internal, absent on public), the `service`-source half, that the
renderer DERIVES the annotation from `exposure` and cannot emit external-dns's
own claiming value, proves the shipped renderer end-to-end on
internal/public/omitted-field fixtures, and ratchets the non-catalog register.
Proven to fail on the pre-fix tree (9 of 53 assertions, naming all six
services) and pass after (56/56).

Schema 1.6.0 -> 1.7.0: no field changes, a mapping change to `exposure`.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-14 00:43:12 -05:00

home-network-k3s-impl

Implementation of the home k3s + Longhorn platform. This repo holds the reconciled artifacts (Flux config, Kustomize overlays, KubeVirt/Helm manifests, ServiceDefinitions, Kyverno policies, Chainsaw conformance tests, CI). It is driven by — and subordinate to — the read-only specification at ../home-network-k3s.

Rules (from the spec — non-negotiable)

  • The spec is read-only. Never modify anything under ../home-network-k3s. Implement against it; escalate spec problems, don't edit them (spec AGENTS.md §11, R-TEST-06).
  • Done = a green, reproducible, requirement-tagged conformance test — never "merged," never a manual demo (spec docs/14, agents/definition-of-done.md).
  • No work on main. Every change is a feature branch merged into main (spec CONTRIBUTING.md).
  • No plaintext secrets — SOPS-encrypted only (spec docs/07).
  • Phase discipline — only build what the active roadmap phase authorizes (spec roadmap/phases.md).

Layout

infra/          node provisioning: OpenTofu (Proxmox VE) + cloud-init + Ansible, and the
                pinned dev container that carries the whole toolchain
bootstrap/      one-time cluster bootstrap: Flux install, SOPS/age key, host Gitea
platform/       platform CONTROLLERS (Flux HelmReleases / operator bases): kyverno, cilium,
                longhorn, external-snapshotter, cert-manager, externaldns, gateway, coredns,
                vpn-egress, monitoring, cnpg, keycloak, oauth2-proxy, kubevirt
platform-config/ platform CONFIGS — the custom resources of the CRDs installed above
                (ClusterIssuers, Gateway, Kyverno policies, KubeVirt/CDI CRs, Keycloak CRs).
                Split out because CRs and the CRDs they use cannot apply in one pass.
apps/           application tier, reconciled as dependency-ordered WAVES:
                  wave-0/ wave-1/ wave-2/   rendered container apps (see DESIGN-waves.md)
                  vms/                      KubeVirt VirtualMachines (non-gating tier)
catalog/        ServiceDefinition entries (the onboarding surface) + render.py
schemas/        ServiceDefinition JSON Schema + renderer contract
clusters/       Flux entrypoints + dev/ and prod/ overlays
conformance/    Chainsaw behavior/conformance suite + harness + coverage report
ci/             the gate as scripts (lint · schema · Kyverno L0 · L1 render · decision)
.gitea/         Gitea Actions CI running that gate on an in-cluster runner

Status

Roadmap phases 0–6 are delivered, and Phase 7 (Production Readiness) is OPEN and in progress. clusters/prod is no longer a design-only overlay: prod is the live cluster, serving the apex home.keithjackson.dev. The dev cluster was decommissioned on 2026-09-12 (full migration: dev out, prod onto the apex — see the DECISIONS-LOG), so phases 0–6 are now exercised on prod hardware rather than on Proxmox VMs.

Phase 7 exit criteria — prod runs the same config via the prod overlay; DR proven; monitoring + alerts live:

criterion state
prod runs the prod overlay met — 3× mini-PC bare metal, one Flux tree, prod overlay only
monitoring + alerts live met 2026-09-13 — see the note below; this was not true before that date
DR proven R-STATE-03 PROVEN on prod 2026-09-14 — off-cluster restore from Cloudflare R2. R-STATE-02 (node-loss) is still dev-only

DR restore is proven on prod. R-STATE-03 reads proven in --status as of 2026-09-14 — the first requirement in this repo to reach that state. Both of its verifiers are recorded: dr-restore (L3, run 20260914T021505Z-24b8111, sentinel DR_RESTORED_FROM_OFF_CLUSTER_BACKUP_OK) and placeholder-guard-coupling (L0). The L3 drill seeds a canary on the replicated longhorn class, backs the namespace and volume data up off-cluster, destroys every in-cluster copy (namespace, PVC and PV), restores into a clean namespace, and asserts the restored PVC binds a different PersistentVolume — so an in-cluster survival cannot pass as a restore.

What remains for Phase 7: R-STATE-02 (node-loss) is still proven only on the decommissioned dev cluster. That drill takes a real node down on a live cluster, so it is a deliberate, scheduled exercise rather than something to run in passing.

Read --coverage-only and --status as two different questions; the earlier PROVEN: 0 was not a bug but the honest answer, because proofs are claims about a specific tree on a specific cluster.

Phase Delivered
0 Foundations ServiceDefinition schema + renderer, Kyverno L0 gate, conformance harness, CI
1 Cluster bring-up 3-node k3s HA, embedded etcd, kube-vip VIP, Cilium, Flux, SOPS. Originally Proxmox VMs; now 3× mini-PC bare metal (k3s-prod-1/2/3, 192.168.2.10/.11/.12, k3s v1.36.4+k3s1, Debian 13)
2 Platform core Cilium · Longhorn · cert-manager (LE-prod wildcard) · ExternalDNS · Gateway API · split-horizon CoreDNS
3 Egress / VPN ADR-0015 node-level OpenVPN split-tunnel + Cilium egress-gateway steering + host kill-switch
4 Observability kube-prometheus-stack · Loki · Alloy · Alertmanager. Velero unblocked 2026-09-13 — backs up to Cloudflare R2 (OQ-BKP closed; the velero-plugin-for-aws tagging incompatibility needed a pinned plugin). Longhorn has no backup target by decision: volume data is protected by Velero + kopia to R2. image-automation authored but disabled
5 IaaS KubeVirt + CDI on real nested KVM; live-migratable RWX VM storage. The UniFi VM runs, but UniFi OS Server is not yet installed in the guest
6 Identity + CI Keycloak (Operator + CNPG) · oauth2-proxy forward-auth · Grafana OIDC · kubectl OIDC SSO with group→RBAC · in-cluster Gitea Actions merge gate
7 Production readiness IN PROGRESS (DR restore proven 2026-09-14; node-loss outstanding). Prod live on bare metal serving the apex; dev decommissioned; CNPG HA 3 instances with primaries spread one per node; NFS bulk media + legacy Nextcloud mounted; VPN egress on prod. Alerting made real 2026-09-13 (Longhorn, cert-manager, Flux and twelve app SLIs had all been unable to fire). Open: node-loss (R-STATE-02) re-proven on prod.

Conformance: 51 / 51 requirements covered (100%), 0 gaps, 0 safety-critical gaps (closed 2026-09-13; R-C2-01/R-C2-02 were the last two). Regenerate with ./conformance/run.sh --coverage-only; the full report is conformance/_artifacts/coverage/coverage.md.

Coverage is not proof. A requirement is covered when an executable test exists for it, and PROVEN only when a recorded run of that test is in conformance/runs/ledger.jsonl at the current SHA on the cluster it claims. Read both numbers: --coverage-only for the first, --status for the second.

The running narrative — decisions, root causes, incidents, follow-ups — is DECISIONS-LOG.md. It, not this table, is the authoritative record.

Working on this repo

Everything the gate needs is baked into the pinned dev container — do not install the toolchain on the host:

infra/devcontainer/dev.sh build            # once
infra/devcontainer/dev.sh run make -C ci gate   # the same gate CI runs
infra/devcontainer/dev.sh                  # interactive shell (sops, flux, kubectl, tofu, ansible)

The container mounts the repo at /work, your age keyring, and the sibling spec repo read-only so the spec-immutability check can actually run. See infra/devcontainer/README.md.

A green run prints MERGE GATE: PASS. The L2/L3 conformance layers stay SKIPPED unless CLUSTER_AVAILABLE=true — the static gate never pretends to have run them.

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