Move L3 enforcement to the host firewall-bouncer (systemd, nftables): drop the Traefik plugin, its secrets volume and the crowdsec Middleware, remove bouncer refs from all IngressRoutes. Disable the http-generic-bf scenario (403-burst bans hurt legit automation under L3 enforcement). Add a Gateway API PoC for homepages prod and CrowdSec PrometheusRule alerts.
RollingUpdate with default maxSurge needs a spare pod the single node does not have (99% CPU requested), so multi-workload restarts end Pending and verify times out. Recreate on all replicas:1 Deployments (immich-server and bentopdf keep RollingUpdate at replicas 2). Also trims CPU/memory requests toward measured use (adguard, authentik, gitea, netbox, uptime-kuma, netbird-server) and gives traefik requests/limits so it is no longer BestEffort.
Finishes the sizing pass over every workload the deploy actually manages. Each
request is at or above the container's p95 over the last seven days, so nothing
is sized below what it is known to use, and each limit is between 1.6x and 5x
the observed max, which is the figure that decides whether a burst gets an
OOMKill.
Some of these go up, and that is the point. adguard was holding 975M against a
500Mi request and netbox 962M against 512Mi, so both sat permanently above
their own request and were standing eviction candidates on a node that has
about 300M of headroom. Raising a request costs scheduler room; leaving it low
costs the pod its place in the queue when the node gets tight.
Others come down. loki ran with a 2Gi limit on 224M, gitea 1.5Gi on 305M, the
authentik worker 1Gi on 305M, and a tail of single-purpose pods -- redis,
glance, the two homepages, cfddns, session-keeper, the netbird dashboard, the
loki gateway -- each reserved 4x to 16x more than they have ever touched.
prometheus gets the opposite treatment: 768Mi/2560Mi, above its p95, because it
compacts its TSDB in place and that is a burst worth budgeting for rather than
throttling.
Two of these limits are close enough to the observed max to be worth watching
rather than trusting: adguard at 1.5x, and its DNS cache grows monotonically, so
the ceiling is a date, not a margin. That was true before this change too; the
pod sizing does not fix it and the cache needs bounding.
CPU limits are untouched throughout. Leaving postgres alone as well: it sits in
an uncommitted file that belongs to other work in progress.
Verified: every request is at or above p95 and every limit above the observed
max across all 74 containers, and 16/16 local gates pass.
These five stacks still asked for :latest, but the build stopped pushing
it - on main it only pushes main and prod, on dev only dev. Every one of
these images therefore resolved only because the registry still had a
stale :latest from before that change, and the next time one of them was
actually built the reference would have dangled.
Named for dtek-notif: of the seven, only that one still resolved at
:prod, because it is the only image not rebuilt since the build dropped
:latest - and it is the only one of these five stacks the deploy does not
manage (no `active` marker, and its file is docker-compose.yaml, which
the COMPOSE_STACKS glob does not even match). Touching
dtek_notif/docker-compose.yaml matches dtek_notif/* in the build's
changed-service detector, so pushing this builds it and publishes
:prod for it too.
Verified the other six resolve at :prod in the registry.
`kubectl rollout undo` restores the previous ReplicaSet's pod template
verbatim. While that template names a tag, the rollback does not roll back
the image: the tag has already moved, so the reverted pod pulls the very
build that just failed and the cluster stays broken. The safety net added
in 1505b63 therefore could not recover from a bad image.
Pin the digest at apply time. A digest is not knowable when a manifest is
written, so render_pinned resolves it on the way into the cluster and the
digest is never committed. Git keeps a readable `:prod`, Renovate keeps
seeing exactly the manifests it saw before, and the previous revision of
each workload now holds the digest that was actually serving, so undo
restores those exact bytes.
imagePullPolicy is dropped from the manifests rather than set to
IfNotPresent: a reference that is not `:latest` already defaults to it, and
that is what the Kubernetes docs ask for alongside a digest.
An unresolvable image is fatal instead of a warning, because carrying on
would quietly apply a mutable tag again.
restart_stale_images keeps its comparison but is no longer how a rebuild
reaches the cluster -- the pinned template rolls out on its own now. What
is left is a drift check for hand-run `kubectl set image`, so it matches
the container by repository: a pod's status now reports `repo@sha256:...`
while the manifest still says `:prod`.
The build job stops pushing `:latest` altogether, which removes the tag
that a dev branch could otherwise move under a prod deploy.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Six of eight workloads had no readinessProbe, so a pod turned Ready the
moment its process started. The verify job relies on `rollout status`, so
it passed for images that crash-looped or served errors, which left the
rollback safety net inert.
Each probe targets the path the service is actually reached on:
- homepages: / (verified 200)
- error-pages: /404.html, the path Traefik's errorPages middleware
requests. / returns 403 by design and would never pass.
- webinar-checker: /health (verified 200). /metrics also answers, but it
is a Prometheus endpoint, not a readiness signal.
The two userbot deployments stay without probes: they expose no port and
no session file, and the panel reaches Telegram through its own client. A
truthful signal there needs a health endpoint in the app itself.
All prod IngressRoutes switch tls.certResolver to tls.secretName
backed by per-router Certificates (HTTP-01, letsencrypt-prod).
adguard-prod reuses the shared adguard-certs secret (also feeds
DoT :853); sync CronJob removed as redundant.
Traefik certificatesResolvers removed: its internal
acme-http@internal router hijacks HTTP-01 for every host while
enabled, blocking external solvers. Dormant files (kener,
downtify) converted for consistency but not applied; n8n
untouched per live-only rule.
Protect public Traefik routes with CrowdSec HTTP decisions and restore access logging for web traffic analysis.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
services marked k8s/active are applied via kubectl; the rest via docker
compose. inactive services with k8s/ keep only routing manifests
(external Services, EndpointSlices, Ingresses) to reach docker backends.
headscale/nextcloud routing moved to k8s/routing/.
validations: compose config --quiet + kubectl apply --dry-run=client.
namespace manifests applied first. pull_policy:build stacks get
build+push before up so the registry image stays fresh.
forust
