jakman85andClaude Opus 5 2e259a808f fix(velero): prod backups could not write metadata to R2, and opt-out FSB would have shipped 8.6 TiB
Velero was resumed on prod (live `flux resume`; suspension was never in git) and
its BackupStorageLocation validated Available against Cloudflare R2 on the first
try — bucket k3s-prod-backup, prefix `velero`, region auto, checksumAlgorithm "".
Backups still failed, and a second, unrelated hazard was armed. Both are fixed
here; both were measured on prod, not reasoned about.

1. velero-plugin-for-aws v1.14.2 cannot write to R2 at all.
   It sets PutObject's `Tagging` field unconditionally, so the SDK emits an empty
   `x-amz-tagging` header on every PUT. R2 does not implement object tagging in
   any form and answers HTTP 501 NotImplemented. Two separate Backups reproduced
   it on the write of velero/backups/<name>/velero-backup.json: kopia uploaded
   the volume data fine (it uses its own S3 client), then the backup went
   phase=Failed with no metadata object — i.e. unrestorable. No config avoids it;
   `config.tagging` with a real value sends a tag set R2 also rejects. Upstream
   PR #309 makes the field conditional and landed on release-1.14 after v1.14.2
   was cut, so v1.14.3-rc.2 is the earliest build with the fix. Pinned to it,
   with the exit condition (v1.14.3 GA) stated at the pin.

2. The opt-out FSB schedule would have uploaded the NFS bulk tier.
   Schedule (1) runs defaultVolumesToFsBackup:true and excludes only monitoring
   and unifi. Since 2026-09-11 prod also carries four static NFS PVs —
   plex-media, sonarr-media and radarr-media all bound to the SAME export
   /mnt/Storage/plex (8.32 TiB measured via zfs list), plus
   nextcloud-legacy-archive at 270 GiB. The 03:00 run would have read that
   library three times over NFS and pushed ~8.6 TiB to R2 nightly, retained
   720h. Namespace exclusion cannot express the fix: those four namespaces also
   hold real Longhorn PVCs (plex/sonarr/radarr config, nextcloud-data) whose
   loss is unrecoverable.

   So the opt-out is now per VOLUME, by SOURCE TYPE: a velero volume policy
   (ConfigMap velero-volume-policies) skips any volume whose source is NFS, and
   schedule (1) references it. That tests the property that makes a volume
   bulk-tier (R-STATE-04: the bulk tier IS the NFS export) instead of a name list
   the next PV would slip past. The per-pod backup-volumes-excludes annotation
   was rejected for failing OPEN — a new NFS mount would be backed up in full
   until someone remembered.

   PROVEN on prod (velero 1.18.1 / chart 12.1.0): a Backup of ns nextcloud with
   defaultVolumesToFsBackup:true plus this policy produced exactly ONE
   PodVolumeBackup — `data` (nextcloud-data, Longhorn, 875,417,102 bytes,
   Completed). The NFS `legacy-archive` volume produced none.

Residual gap, stated rather than hidden: the rule matches NFS only. A future
bulk volume on another out-of-cluster source needs its own condition.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-12 17:18:26 -05:00
2026-09-07 23:05:59 -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 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.

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