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home-network-k3s-impl/clusters/dev/rollout/monitoring.yaml
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jakman85andClaude Opus 4.8 d9a80e5350 phase2-prep: per-component no-secret rollout + component hardening (author-first)
Prep only — nothing deployed; running cluster untouched.

Reconciliation graph (operator-approved Option A): author clusters/dev/rollout/
= 4 per-component Flux Kustomizations (kyverno->cilium->longhorn->monitoring,
monitoring dependsOn longhorn). Dev overlay $patch:delete's the monolithic base
platform/apps and adds ./rollout, so only the no-secret tier reconciles; the
secret-blocked components are simply not created until hand-offs arrive. The
no-secret tier carries no SOPS content, so it needs no sops-age key. prod is
untouched (still builds the monolith). Convergence path coded in (delete rollout/
+ the two deletes) — R-ENV-02 divergence flagged for architect review.

Component hardening via cluster-vars (prod keeps strict posture):
- KYVERNO_VALIDATION_ACTION Enforce->Audit(dev), _WEBHOOK_FAILURE_POLICY
  Fail->Ignore(dev), _ADMISSION_REPLICAS 3->1(dev); webhook namespaceSelector
  excludes system+platform namespaces.
- MONITORING_STORAGE_CLASS var; GRAFANA_ADMIN_SECRET var (dev ''=chart default);
  Alertmanager SMTP/secret deferred to Phase-4 with verbatim re-enable markers.

Cilium parity verified against the live CNI (no-op adopt). Validated:
kubectl kustomize dev/prod/all-components, envsubst->YAML parse, make -C ci gate PASS.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
2026-08-16 21:34:57 -05:00

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YAML

---
# Monitoring — kube-prometheus-stack + Loki + Alloy. Prometheus/Loki PVCs bind the
# `longhorn` StorageClass, so this dependsOn longhorn (Flux waits for it Ready first).
# Grafana admin password (chart default in dev) and Alertmanager SMTP (deferred to the
# Phase-4 hand-off) are handled WITHOUT an operator secret in dev → NO decryption block.
apiVersion: kustomize.toolkit.fluxcd.io/v1
kind: Kustomization
metadata:
name: monitoring
namespace: flux-system
spec:
interval: 10m
retryInterval: 2m
timeout: 15m
prune: true
wait: true
dependsOn:
- name: longhorn
sourceRef:
kind: GitRepository
name: flux-system
path: ./platform/monitoring
postBuild:
substituteFrom:
- kind: ConfigMap
name: cluster-vars