Files
home-network-k3s-impl/clusters
jakman85andClaude Opus 4.8 84a2d762f0 Phase 1 (author-only): Flux + SOPS bootstrap + interface wiring (T-1.4)
bootstrap/sops (age-keygen refusing in-repo, .sops.yaml, install-age-key.sh
glue installing the sops-age Secret) + bootstrap/flux (bootstrap.sh: flux
install -> apply -k clusters/dev; decryption/url patches). PM wiring: place
.sops.yaml at repo root (SOPS walks to root); inline the 3 flux patches into
clusters/dev (avoids kustomize ../ load-restriction). clusters/dev builds with
decryption enabled; full CI gate PASS. No key material; nothing executed.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
2026-08-16 01:21:01 -05:00
..

clusters/

Flux entrypoints and the environment-overlay model (R-ENV-02, R-GITOPS-01/02/03).

Governing spec: docs/05-gitops-and-delivery.md, docs/02-environments-and-provisioning.md, ADR-0004 (Flux).

Phase 0 scaffolding only. These are structurally-correct stubs. No cluster exists — nothing here reconciles until WS-INFRA delivers a cluster and bootstraps Flux (roadmap Phase 1).

Layout — base + overlay (never fork the base)

clusters/
  base/                 shared Flux objects (one authoring, both environments)
    flux-system.yaml    GitRepository — the reconciliation source (bootstrap → Gitea)
    platform.yaml       Flux Kustomization → ./platform   (reconciles first)
    apps.yaml           Flux Kustomization → ./apps        (dependsOn platform)
    cluster-vars.yaml   ConfigMap of overlay knobs (BASE defaults)
    kustomization.yaml
  dev/                  ACTIVE build target — patches cluster-vars with dev values only
    kustomization.yaml
  prod/                 DESIGN-ONLY until roadmap Phase 7 — patches cluster-vars with prod values only
    kustomization.yaml

How the overlay model satisfies R-ENV-02

The base authors the reconciliation graph once. platform.yaml and apps.yaml (Flux Kustomizations) both declare postBuild.substituteFrom the cluster-vars ConfigMap. Platform and app manifests use ${TOKEN} placeholders for every value that legitimately differs between environments (issuer, replica counts, storage sizes, retention, node placement).

clusters/dev and clusters/prod differ ONLY by the values they patch into cluster-vars — they add no resources of their own and never copy/fork a base manifest. Promotion to prod (docs/02) is a change to the prod overlay's variables, nothing else.

How Flux is pointed at an environment

flux bootstrap (run by WS-INFRA in Phase 1) targets one environment's path per cluster:

# dev cluster
flux bootstrap ... --path=clusters/dev
# prod cluster (Phase 7 only — design-only until then)
flux bootstrap ... --path=clusters/prod

Bootstrap materializes the flux-system Kustomization that renders the chosen overlay, which pulls in base/ and applies the env-scoped cluster-vars.

Reconciliation order

GitRepository (flux-system)
        │
        ▼
Kustomization: platform  (./platform, substituteFrom cluster-vars)
        │  healthy
        ▼
Kustomization: apps      (./apps, dependsOn platform, substituteFrom cluster-vars)

apps dependsOn platform so CNI/storage/TLS/DNS/gateway exist before any workload reconciles.

TODOs (later phases — do not action in Phase 0)

  • Source cutover (WS-GITOPS, Phase 6): base/flux-system.yaml currently points at the bootstrap source. After Gitea is onboarded, repoint spec.url to gitea.home.keithjackson.dev and keep an off-cluster mirror (spec docs/05 "Source-of-truth", CONTRIBUTING.md).
  • SOPS decryption (WS-SEC, Phase 1): add spec.decryption.provider: sops (age secret name only, never plaintext) to the platform/apps Kustomizations once the age key is bootstrapped (ADR-0007).
  • Split ordered Flux Kustomizations if intra-platform ordering needs to be explicit (e.g. a separate cilium/longhorn Kustomization others dependsOn).