Files
home-network-k3s-impl/runbooks/kustomization.yaml
jakman85andClaude Opus 5 55b232e2ce
gate / gate (pull_request) Successful in 1m40s
gate / conformance (pull_request) Has been skipped
feat(obs): notify on Flux deploy start and completion
The operator got no mail when Flux began applying a git change and none when
it finished. Measured cause: notification-controller v1.4.0 is running and its
CRDs serve v1beta3, but there are ZERO Provider and ZERO Alert objects in the
cluster — nothing in git ever created any.

The obvious fix does not work. Neither Flux event can be filtered into a deploy
signal: ReconciliationSucceeded is a heartbeat (101 events in one hour across 16
Kustomizations, message byte-identical whether the apply changed anything), and
Progressing is worse (five Kustomizations re-apply the same object on every tick
— event counts 2505/2504/2501/2495/2490). gotk_* carries no revision label at
all (gotk_reconcile_condition 120 series, gotk_suspend_status 40, none with one).

The applied revision is the only signal that moves when and only when git moves,
and it lives in object status alone. So export it via the kube-state-metrics
custom-resource-state path that already serves the Velero Schedule metrics —
kube_flux_kustomization_info/_suspended and kube_flux_gitrepository_info — and
ask the question in PromQL:

  FluxRolloutInProgress (severity: info, no `for:`) fires the moment a
  non-suspended Kustomization's applied revision is not the revision the
  GitRepository fetched from main, and CLEARS when all have caught up. Fired
  mail = a deploy started; RESOLVED mail = it completed. The completion half is
  send_resolved, not a second rule.

  FluxRolloutStuck (severity: warning, for: 30m) is the same expression as the
  escalation for a rollout that started and never converged.

Two guards, each with a test whose only job is to fail if the clause is removed:
`and on () (count(gitrepository_info) > 0)` — without it a missing exporter makes
`unless on (revision) <empty>` remove nothing and all 16 Kustomizations alert
forever, the permanently-firing mode this repo shipped once already — and the
suspended-Kustomization exclusion, without which a suspended tier holds the
rollout open and the "applied" mail never arrives.

A dedicated Alertmanager severity=info route + email-deploy receiver keeps deploy
notices off the [WARNING] catch-all. podAnnotations carries a roll-counter because
the chart sets no checksum over the custom-resource-state ConfigMap, so a
config-only edit would leave KSM on the old collector set with the new alerts
silently inert.

Verified: promtool SUCCESS on 6 scenarios (both guards, plus the convergence test
that proves the alert empties itself); lint/l0/render-golden/l1/decisions-log/
spec-immutability green in the pinned toolbox. NOT verified: no mail has been
sent — the metrics do not exist until this merges. Full gap list, and the
deliberately-cut notification-controller half, in the handoff entry.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
2026-09-29 23:40:01 -05:00

98 lines
5.2 KiB
YAML

---
# Runbooks tier — reconciled by its OWN non-gating post-platform Flux Kustomization
# (clusters/base/runbooks.yaml, dependsOn platform-config, wait:false). Same placement and rationale as
# platform/homepage: a leaf web server must never sit in the gating `platform` tier, where a UI's
# unhealth once stalled the whole chain (DECISIONS-LOG: "Headlamp gating stall").
#
# WHY THE MANIFESTS LIVE HERE, ALONGSIDE THE DOCS, RATHER THAN IN platform/runbooks/.
# The markdown is the source of truth and the task is to serve it verbatim, which means the ConfigMap must
# be GENERATED from these files — there must not be a second hand-maintained copy of 34 documents that can
# drift from the originals. `configMapGenerator` does that, and its `files:` paths are resolved relative to
# THIS directory. A `platform/runbooks/kustomization.yaml` would therefore need `../../runbooks/<name>.md`,
# which depends on kustomize load restrictions being relaxed — true for Flux's kustomize-controller,
# refused by a plain `kustomize build`, and so a divergence between what the gate can verify and what the
# cluster does. Making this directory the Flux path removes the question entirely: no `../`, identical
# behaviour locally and in-cluster, one copy of every document. The serving manifests are tucked under
# `serving/` so `runbooks/*.md` stays exactly the flat set of pages the URLs name.
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: runbooks
resources:
- serving/namespace.yaml
- serving/nginx-config.yaml
- serving/deployment.yaml
- serving/service.yaml
# default-deny baseline + Cilium gateway-ingress allow (DNS-only egress from the baseline).
- serving/networkpolicy.yaml
- serving/httproute.yaml # apex `/runbooks` prefix (binds the Gateway `https-apex` listener)
configMapGenerator:
# ONE ConfigMap holding every runbook, keyed by the EXACT name the alert annotations use.
#
# THE KEYS ARE EXTENSIONLESS ON PURPOSE. The annotations are `https://${BASE_DOMAIN}/runbooks/<name>`
# with NO `.md`, and this repo must not change them (they are spread across four alerts.yaml files that
# other work is editing). `<key>=<file>` maps `node-down.md` on disk to the key `node-down`, the volume
# mount turns each key into a file under the nginx root, and `/runbooks/node-down` becomes a plain static
# lookup — no rewrite rule, nothing to get subtly wrong at 3am. Drop the `<key>=` and every key would
# carry `.md`, so every alert link would 404 while this file still looked correct.
#
# The generated name carries kustomize's content hash, so editing any runbook rolls the server
# automatically and a stale projection is impossible.
#
# ADDING A RUNBOOK: add the file AND its line here. The L0 check
# conformance/tests/l0-static/alert-runbooks-resolvable asserts both halves, because a file in git with
# no generator entry is reviewed, merged, apparently done — and still a 404 in the cluster.
- name: runbooks-content
options:
labels:
app.kubernetes.io/name: runbooks
files:
# The index, served at /runbooks/ (nginx `try_files /runbooks/README`).
- README=README.md
- backup-failure=backup-failure.md
- backup-missed=backup-missed.md
- backup-partial=backup-partial.md
- cdi-import-stuck=cdi-import-stuck.md
- cert-expiry=cert-expiry.md
- cert-issuance=cert-issuance.md
- cnpg-archiving=cnpg-archiving.md
- cnpg-backup-missed=cnpg-backup-missed.md
- cnpg-exporter=cnpg-exporter.md
- cnpg-primary-spread=cnpg-primary-spread.md
- cnpg-wal-growth=cnpg-wal-growth.md
# Operator procedure, not alert-linked (Crafty's local login is a second factor behind
# the Keycloak gate and its bootstrap password lives only on the PVC).
- crafty-admin-credential=crafty-admin-credential.md
- denied-flows=denied-flows.md
- flux-reconcile=flux-reconcile.md
- flux-rollout=flux-rollout.md
- flux-suspended=flux-suspended.md
- image-automation=image-automation.md
- image-policy-stalled=image-policy-stalled.md
- keycloak-client-secrets=keycloak-client-secrets.md
- keycloak-db=keycloak-db.md
- keycloak-down=keycloak-down.md
- kubevirt-control-plane=kubevirt-control-plane.md
- kubevirt-crashloop=kubevirt-crashloop.md
- kubevirt-launch-failed=kubevirt-launch-failed.md
- longhorn-capacity=longhorn-capacity.md
- longhorn-degraded=longhorn-degraded.md
- longhorn-faulted=longhorn-faulted.md
- monitoring-capacity=monitoring-capacity.md
- node-cpu=node-cpu.md
- node-disk=node-disk.md
- node-down=node-down.md
- node-io=node-io.md
- node-memory=node-memory.md
- node-memory-swap=node-memory-swap.md
# Operator procedure, not an alert page (no alert links to it — the
# alert-runbooks-resolvable check treats that as advisory). It is served
# because the plex.tv claim window is short and is not a thing to go looking
# for in git: /runbooks/plex-claim has to resolve the moment it is needed.
- plex-claim=plex-claim.md
- pvc-capacity=pvc-capacity.md
- targets-down=targets-down.md
- update-rollback=update-rollback.md
- vpn-down=vpn-down.md
- vpn-egress-stale=vpn-egress-stale.md