Follow-up to the reciprocal-ingress fix: in-cluster verification (Hubble) revealed
the east-west path was STILL fully blocked — and that the pre-existing EGRESS half
was also broken, contrary to the original diagnosis. Root cause: a CiliumNetworkPolicy
`toEndpoints`/`fromEndpoints` selector is scoped to the POLICY's OWN namespace unless
it carries the reserved `k8s:io.kubernetes.pod.namespace` label. Every service lives
in its own namespace (== its name) and every dependency crosses a namespace boundary,
so an app-label-only peer selector matched nothing and Cilium silently denied the flow
(Hubble: sonarr->qbittorrent = "EGRESS DENIED ... Policy denied DROPPED").
Pin the peer namespace on BOTH halves — egress toEndpoints (destination ns == dep.to)
and the reciprocal ingress fromEndpoints (source ns == source name). This is a strict
TIGHTENING (more precise, still L3/L4), not a weakening. Verified end-to-end in-cluster:
sonarr->qbittorrent:8080, sonarr->jackett:9117, seerr->{sonarr:8989,radarr:7878,
plex:32400} now CONNECT (were DROPPED); undeclared sonarr->plex:32400 and
seerr->qbittorrent:8080 stay BLOCKED (default-deny holds).
Selftest + L0 (17/17) + L1 (3/3, goldens byte-identical) + lint all pass. NOTE: this
necessarily touches the egress toEndpoints selector, which the task scoped as
ingress-only; the premise that egress already worked was empirically false.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
A `dependencies` edge is declared ONCE on the SOURCE, but with the default-deny-
BOTH-directions baseline (docs/03 R-NET-01/02) it needs TWO matching halves: the
source egress-allow AND the destination ingress-allow. render.py emitted only the
egress half, so every declared east-west dependency was silently dropped by the
destination's default-deny ingress — verified in-cluster: sonarr->qbittorrent:8080,
sonarr->jackett:9117 and seerr->sonarr:8989 were all BLOCKED.
Add a cross-service reverse-dependency pass (build_reverse_map) and render the
reciprocal ingress half (r_reverse_dependency_policies): for each source that
declares a dependency on X, X gains an additive ingress-allow CiliumNetworkPolicy
`X-allow-<source>-<port>` whose fromEndpoints matches the source identity, mirroring
the egress half's L3/L4 granularity. Deterministic (sorted), additive (default-deny
ingress stays []), egress side unchanged. A lone render with no cross-catalog context
renders no reciprocal ingress, so the L1 render goldens are byte-identical.
New ingress CNPs: qbittorrent<-{sonarr,radarr}:8080, jackett<-{sonarr,radarr}:9117,
sonarr<-seerr:8989, radarr<-seerr:7878, plex<-seerr:32400. Selftest + L0 (17/17) +
L1 (3/3) + lint all pass.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Any single-replica app with a `storage:` entry mounts a ReadWriteOnce Longhorn
PVC. The default RollingUpdate strategy starts the new pod before terminating the
old one, but the old pod still holds the RWO volume -> the new pod hangs in
ContainerCreating and the rollout deadlocks (observed on gitea's update). Emit
spec.strategy.type=Recreate whenever storage is present so the old pod releases
the PVC first. Non-storage apps (and VMs) keep the default (no strategy emitted).
Re-rendered apps: gitea, pihole, sonarr, radarr, plex, qbittorrent, jackett now
carry strategy: Recreate. Updated the egress-class L1 render goldens (storage
fixture) accordingly; all L1 render checks pass.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Root cause the media stack surfaced: the default-deny baseline is DNS-only egress (correct for
R-NET-01 east-west), but the egress CLASS (internet/vpn) had no policy ALLOWING north-south
egress — so qbittorrent/sonarr/radarr couldn't reach the internet at all (VPN downloaders
broken). Add an additive per-app CiliumNetworkPolicy '<app>-allow-internet-egress' with
toEntities:[world] (non-cluster); the egress-class steering + kill-switch (ADR-0015) govern the
PATH (internet=WAN, vpn=tun0). East-west stays denied except declared dependencies; R-NET-01
baseline unchanged. Re-rendered all apps + regenerated L1 goldens. Also fixed jackett + plex
image tags (bad pins -> :latest; Renovate/update policy pins later).
jakman85andClaude Opus 4.8