jakman85andClaude Opus 5
63f98aab26
Cilium was one of ~12 components inside a single `platform` Kustomization with wait:true,
so the CNI's health was indistinguishable from eleven unrelated components in the tier's
Ready condition, and the only emergency valve was freezing the whole platform tier. This
repo already set the precedent in reverse (oauth2-proxy and headlamp were split OUT so
unhealthy leaves would not gate a tier); Cilium is the mirror image — the one component
that legitimately SHOULD gate everything.
New clusters/base/cilium.yaml: path ./platform/cilium, wait:true, prune:true, interval 1h
(a CNI does not need a 10m re-render cadence; kustomize-controller is source-triggered so
a push still reconciles immediately — the interval is only the drift-correction floor),
timeout 10m (a 3-node DaemonSet rollout with wait exceeds the 5m default),
dependsOn:[flux-system], and postBuild.substituteFrom: cluster-vars — the last is
LOAD-BEARING, not decorative: helmrelease.yaml references ${K3S_API_HOST} and
kustomize-controller now runs --feature-gates=StrictPostBuildSubstitutions=true, so
without it this Kustomization would fail immediately.
*** THE HAZARD WAS FAR WORSE THAN "the CNI gets pruned" ***
platform/cilium/namespace.yaml is the ONLY declaration of Namespace/kube-system anywhere
under ./platform, and the live object carries kustomize.toolkit.fluxcd.io/name=platform.
With prune:true, the moment ./platform/cilium leaves platform's path the stale set is not
"the Cilium HelmRelease" — it is `kubectl delete namespace kube-system`, taking coredns,
metrics-server, local-path AND Cilium. A full cluster kill, not a CNI kill.
TWO INDEPENDENT PROTECTIONS, deliberately not trusting either alone:
1. prune:false on `platform` for this transition merge — Flux's documented Procedure 1 for
moving resources between Kustomizations. Chosen over the per-resource
`kustomize.toolkit.fluxcd.io/prune: disabled` annotation because that needs THREE merges
and leaves the new Kustomization owning resources it can never prune.
2. The pruner's own owner-label filter. In v1.4.0, prune() passes Inclusions:
GetOwnerLabels(obj.Name...), so platform only deletes objects whose LIVE labels still
say name=platform. The new cilium Kustomization relabels all three to name=cilium on
apply, and platform.dependsOn:[cilium] is REVISION-GATED, so platform provably cannot
reconcile revision N until cilium has APPLIED revision N. The relabel deterministically
precedes the prune.
Protection 2 alone would probably have sufficed. Not betting kube-system on "probably".
NOTED FOR THE FUTURE, in-file: anyone moving a platform/* component must first check
whether it is the sole declarer of a shared Namespace — that turns a component-scoped
prune into a cluster-scoped one.
Verified: `kubectl kustomize platform` goes 88 -> 85 documents, 3 removed / 0 added /
0 CHANGED, and `kubectl kustomize platform/cilium` reproduces those 3 byte-identical
(sha256-matched). A pure ownership move; no Cilium value touched. L0 substitution gate
103 assertions (was 102), new cilium row, 0 hazards. Server-side dry-run against the live
cluster accepted both CRs. clusters/prod renders clean off the same base.
MERGE 2 (restore prune:true) follows only after verifying: 13/13 Ready; kube-system, the
HelmRelease and the HelmRepository all relabelled to name=cilium; platform's inventory no
longer lists them; and Cilium pod ages/restarts UNCHANGED from
cilium-2f8h8 r=0 2026-09-01T05:55:27Z / cilium-425m8 r=1 2026-08-30T13:25:10Z /
cilium-54cww r=0 2026-09-01T05:55:26Z, HelmRelease v11.
Serves: R-PLAT-01, R-GITOPS-01.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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 (specAGENTS.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 intomain(specCONTRIBUTING.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 deployed on the dev cluster; Phase 7 (prod) is not
open — clusters/prod is a design-only overlay.
| Phase | Delivered |
|---|---|
| 0 Foundations | ServiceDefinition schema + renderer, Kyverno L0 gate, conformance harness, CI |
| 1 Cluster bring-up | 3-node k3s HA on Proxmox VE (192.168.1.50/.51/.52), Cilium, Flux, SOPS |
| 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 still blocked on OQ-BKP; 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 |
Conformance: 36 / 51 requirements covered (70.6%), 15 gaps, 1 safety-critical gap
(R-STATE-02, Longhorn node-loss). Regenerate with ./conformance/run.sh --coverage-only;
the full report is conformance/_artifacts/coverage/coverage.md.
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.