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home-network-k3s-impl/clusters/base/kustomization.yaml
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jakman85andClaude Opus 5 44983095e1 feat(runbooks): make the 42 alert runbook_url annotations resolve 
Every platform-health alert rule carries
`runbook_url: "https://${BASE_DOMAIN}/runbooks/<name>"` — 42 annotations over 34
distinct names, across platform/monitoring/alerts.yaml,
platform/monitoring/pvc-capacity-alerts.yaml, platform/cnpg/alerts.yaml and
platform/kubevirt/alerts.yaml. There was no runbooks/ directory and no HTTPRoute
serving that path: an in-cluster probe of
https://home.keithjackson.dev/runbooks/node-down returned HTTP 404. Every alert that
reached a human handed them a dead link at the exact moment the documentation is read,
and the annotation made it look solved — the same green-surface-over-absent-mechanism
class as the import Job that reported success while storing placeholder secrets.

No alerts.yaml is touched and no runbook_url value changes. The existing URL scheme is
made to resolve instead.

WHAT LANDS
- runbooks/<34>.md — one per name, each grounded in this cluster's real topology and,
  where one exists, its real incident history: the 2026-09-07 k3s-prod-1 etcd I/O
  starvation (measured PSI 11.36 vs 0.75/1.29, the exact journal lines, the four
  mechanisms proven inert), the Longhorn reboot tax and the freeze/thaw of
  concurrent-replica-rebuild-per-node-limit, Cilium's once-resolved egress interface
  cache (Ifindex 3 against a live 1780) and the absence of OSS failover, the CNPG
  38-hour ContinuousArchiving=False with its measured 6.8 MiB/h disk-full clock and the
  2026-09-12 aggregation-scope fix, the 2026-09-06 Keycloak lockout in which all 12
  clients held literal placeholder secrets behind an entirely green cluster, the Velero
  R2 x-amz-tagging NotImplemented incompatibility and its v1.14.3-rc.2 pin, and swap
  re-enabling itself across reboots via systemd-gpt-auto-generator.
  Each page states what the alert means HERE, the first diagnostic commands, likely
  causes ordered by probability with a remediation each, and when to escalate or stop.
- Every page uses FULLY-QUALIFIED resource names and says why: three CRDs register the
  kind `Backup` here, the bare short name resolves to Longhorn's (zero objects), so
  `kubectl get backup -A` prints "No resources found" on a cluster holding 6 Velero and
  27 CNPG backups. Acting on that false negative is how a CLI quirk becomes data loss.
- Every page states that kubectl only works via
  `infra/devcontainer/dev.sh run bash -c '...'` with an explicit `--context k3s-prod`,
  because dev.sh defaults its current-context to k3s-dev.
- Pages also record which alert groups are INERT today (measured 2026-09-13: no
  Longhorn, cert-manager, Flux-controller or Hubble scrape job exists, so 13 rules
  evaluate against nothing) so nobody reads their silence as health.

SERVING — runbooks/serving/ plus clusters/base/runbooks.yaml
A two-replica nginx-unprivileged serving a ConfigMap generated from runbooks/*.md, at
the apex `/runbooks` prefix, in its own non-gating post-platform Flux tier
(dependsOn platform-config, wait:false) — the platform/homepage pattern, file for file.
- The service catalog cannot express this route: ingressRoutes[].host is pattern-bound
  to a single DNS label plus the apex, so the bare apex is unrepresentable, and there is
  no path field.
- Rejected: redirecting to the Gitea web UI. A runbook is read when the platform is
  broken, and Gitea is an app-tier workload whose own dependencies several of these
  runbooks document; Gateway API's RequestRedirect also has no "append .md" modifier,
  so it would need 34 hand-maintained ReplaceFullPath rules.
- configMapGenerator maps each file to an EXTENSIONLESS key (node-down=node-down.md),
  so /runbooks/node-down is a plain static lookup with no rewrite rule. Served as
  text/plain: the namespace has DNS-only egress, so a CDN markdown renderer could not
  load anyway.
- The tier declares NO postBuild.substituteFrom, deliberately: envsubst would run over
  the prose and silently empty every ${...} shell example (it fails open — the 2026-09-01
  emptied Cilium k8sServiceHost). The HTTPRoute omits `hostnames:` and inherits the
  https-apex listener's, so nothing needs substituting.

AUTH — PUBLIC, deliberately
auth-mode=none. Gating these pages behind oauth2-proxy/Keycloak would make
runbooks/keycloak-down unreadable when Keycloak is down and
runbooks/keycloak-client-secrets unreadable during the exact 2026-09-06 failure mode.
An operator who cannot log in is this route's primary reader. Content is operational
procedure only, no secrets. The rationale is recorded in an annotation on the HTTPRoute
so the route is left OUT of the Gateway ext-authz attachment when forward-auth
enforcement lands.

PROVEN — in-cluster probe through the Gateway on prod
  /runbooks/node-down        HTTP 200   8613 bytes  text/plain; charset=utf-8
  /runbooks/keycloak-down    HTTP 200   9378 bytes  text/plain; charset=utf-8
  /runbooks/cnpg-archiving   HTTP 200  11729 bytes  text/plain; charset=utf-8
  /runbooks/longhorn-faulted HTTP 200   9135 bytes  text/plain; charset=utf-8
  /runbooks/vpn-down         HTTP 200  11092 bytes  text/plain; charset=utf-8
  /runbooks/backup-failure   HTTP 200   9604 bytes  text/plain; charset=utf-8
HTTPRoute Accepted by io.cilium/gateway-controller on sectionName https-apex; the
`/runbooks` prefix wins over homepage's apex `/` by Gateway API longest-path precedence.

GUARD — conformance/tests/l0-static/alert-runbooks-resolvable (R-OBS-04)
363 offline assertions. It checks BOTH halves, because the regression is silent in both
directions: an alert with a new runbook_url and no runbook links to a 404, AND a runbook
committed without its configMapGenerator entry is in git, reviewed, merged, and still
404s in the cluster. Also asserts a quality floor so a stub cannot make the link look
fixed, and that route/listener/nginx prefix agree with the annotations.
Proven to fail, then reverted: a bogus runbook_url (2 FAIL), a runbook removed from the
generator (1 FAIL), and a 31-byte stub (7 FAIL).

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-12 23:49:58 -05:00

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---
# Base Flux entrypoint set. Shared by BOTH environment overlays (clusters/dev, clusters/prod).
# Overlays reference this base and patch ONLY the cluster-vars ConfigMap (R-ENV-02).
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- flux-system.yaml # GitRepository (reconciliation source)
# Cilium (the CNI) — its OWN Kustomization, split OUT of `platform` (2026-09-01). The mirror image
# of the oauth2-proxy/headlamp splits: those are leaves that must never gate a tier (wait:false);
# Cilium is the one component that legitimately SHOULD gate everything, so it keeps wait:true and
# `platform` dependsOn it. Splitting it out buys a per-CNI Ready condition, CNI-appropriate
# interval/timeout, and `flux suspend kustomization cilium` as an emergency valve that does not
# freeze the other eleven platform components. See clusters/base/cilium.yaml.
- cilium.yaml # Flux Kustomization -> ./platform/cilium (dependsOn flux-system, wait:true)
- platform.yaml # Flux Kustomization -> ./platform (CONTROLLERS: HelmReleases / CRDs)
- platform-config.yaml # Flux Kustomization -> ./platform-config (CONFIGS: CRs; dependsOn platform)
# SECOND-ORDER CDI configs — CRs whose CRD is created by a controller AT RUNTIME, not by any
# manifest in git. cdi-operator.yaml registers only `cdis.cdi.kubevirt.io`; `storageprofiles` (and
# datavolumes, datasources, …) appear only after cdi-operator reconciles the `CDI` CR that
# platform-config applies. Because Flux dry-runs every object in a pass before applying any of them,
# keeping the StorageProfiles in platform-config was a TRUE DEADLOCK (unknown kind -> pass aborts ->
# CR never applied -> CRD never created -> tier never converges), invisible on dev and fatal on any
# cold cluster — observed on prod 2026-09-05. This tier is the durable fix; `standup.sh crds` stays
# as the belt-and-braces repair for clusters already wedged. See clusters/base/platform-config-cdi.yaml.
- platform-config-cdi.yaml # Flux Kustomization -> ./platform-config-cdi (dependsOn platform-config)
# App tier, split into dependency-ordered WAVES (was the single ./apps `apps` Kustomization).
# Each apps-wave-<N> dependsOn wave N-1 (wave 0 dependsOn platform-config) and health-gates
# (wait:true) ONLY its own wave, so a crashloop in a later wave can't stall an earlier one.
# GENERATED by `catalog/render.py --emit-waves`; add a line here only when a NEW deepest wave
# is introduced (a service deeper than any existing wave). See DESIGN-waves.md.
- apps-wave-0.yaml # Flux Kustomization -> ./apps/wave-0 (dependsOn platform-config)
- apps-wave-1.yaml # Flux Kustomization -> ./apps/wave-1 (dependsOn apps-wave-0)
- apps-wave-2.yaml # Flux Kustomization -> ./apps/wave-2 (dependsOn apps-wave-1)
# VM tier (KubeVirt) — non-gating (wait:false), separate lifecycle from the app waves.
- apps-vms.yaml # Flux Kustomization -> ./apps/vms (dependsOn platform-config)
# oauth2-proxy forward-auth — POST-platform tier (dependsOn platform-config, wait:false). A leaf
# service that needs Keycloak + trusted TLS + split-horizon DNS must NOT sit in the gating
# `platform` tier, where it self-gated its own dependencies into a cold-start deadlock (twice).
- oauth2-proxy.yaml # Flux Kustomization -> ./platform/oauth2-proxy (dependsOn platform-config)
# headlamp dashboard — POST-platform tier (dependsOn platform-config, wait:false). A leaf UI whose
# HelmRelease can crashloop (upstream headlamp-0.40.1 `-session-ttl` chart/image desync) must NOT
# sit in the gating `platform` tier, where its unhealth stalled platform-config + oauth2-proxy +
# every apps wave/vm on "dependency not ready" (DECISIONS-LOG: "Headlamp gating stall").
- headlamp.yaml # Flux Kustomization -> ./platform/headlamp (dependsOn platform-config)
# Homepage apex landing dashboard — POST-platform tier (dependsOn platform-config, wait:false).
# A leaf UI at home.keithjackson.dev; same non-gating rationale as headlamp/oauth2-proxy (a UI must
# never gate the platform chain). Carries no SOPS secret, so clusters/dev adds no decryption patch.
- homepage.yaml # Flux Kustomization -> ./platform/homepage (dependsOn platform-config)
# Crafty Controller — Minecraft management UI, web UI Keycloak-gated by a per-pod oauth2-proxy
# reverse-proxy sidecar (Option B). POST-platform tier (dependsOn platform-config, wait:false); same
# non-gating leaf-UI rationale as headlamp/homepage/oauth2-proxy (a UI must never gate the platform).
- crafty.yaml # Flux Kustomization -> ./platform/crafty (dependsOn platform-config)
# Alert runbooks — POST-platform tier (dependsOn platform-config, wait:false). Serves the 34
# runbooks the alert rules' `runbook_url` annotations point at, at <apex>/runbooks/<name>; before
# this tier existed that path was a 404 and every alert handed the operator a dead link. Same
# non-gating leaf rationale as headlamp/homepage/crafty. Carries NO postBuild substitution on
# purpose — it renders documentation containing `${...}` shell examples that envsubst would empty;
# see clusters/base/runbooks.yaml.
- runbooks.yaml # Flux Kustomization -> ./runbooks (dependsOn platform-config)
# Velero backup controller — POST-platform tier (dependsOn platform-config, wait:false). A backup
# controller must NEVER gate the platform chain; same non-gating rationale as headlamp/oauth2-proxy.
# Carries velero-cloud.sops.yaml, so clusters/dev adds a SOPS decryption patch for it (by name).
- backup.yaml # Flux Kustomization -> ./platform/velero (dependsOn platform-config)
- cluster-vars.yaml # overlay knob surface (base defaults)
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