FIREWALL_INPUT_PORTS does not open the app ports inside a pod network. gluetun
detects the pod's own subnet and inserts an INPUT accept for it ahead of the
per-port rules, and every packet arriving at the pod IP matches that rule by
destination. Measured with the packet counters: 50 fresh requests moved the
subnet rule from 306 to 356 packets while every --dport rule stayed at 0 since
container start. A port that listens but is not in the list (gluetun's control
server on 8000) is reachable from another pod all the same.
The variable is kept - it is the explicit statement of which ports are meant to
be reachable, and the subnet detection is gluetun's behaviour rather than a
guarantee of this chart - but the comments no longer claim the traffic would be
dropped without it.
Second correction, same run: the /tmp/gluetun emptyDir fixed the "open ...
permission denied" failure, but gluetun also chowns the file, which needs
CAP_CHOWN. With all capabilities but NET_ADMIN dropped that logs "chown
/tmp/gluetun/ip: operation not permitted" on every VPN restart. The file is
written and the public IP is persisted, so this is a log line rather than a
failure, and granting CHOWN to silence it would widen the container's
capabilities for nothing. Noted where the mount is declared.
Three review changes to the freesailarr chart.
Ingress: the chart no longer derives hosts as <app>.<ingress.domain> from one
Ingress object. The global ingress.domain is gone; every app carries its own
<app>.ingress.host and renders its own Ingress <release>-<chart>-<app>-ingress
with its own TLS secret tls-<release>-<chart>-<app>-ingress. The hosts are
therefore independent and may live in unrelated domains. The host is required,
but the required() call sits inside the loop over the *enabled* app ingresses,
so switching an app's ingress off must not make the chart demand a host for it.
clusterIssuer, className and annotations stay global defaults and are
overridable per app; an explicitly set per-app value wins (nil check instead of
"default", so an empty override is honoured).
Media: media.<category>.subPath mounts a sub-directory of the claim instead of
its root, default null (claim root = previous behaviour). The same
existingClaim may back all three categories with different subPaths. That is
the point rather than cosmetics: Radarr and Sonarr import by moving, and a move
within one filesystem can be a hardlink instead of a copy - across volume
boundaries every import duplicates the file.
Services: the collective Service with named ports is replaced by one ClusterIP
Service <release>-<chart>-<app>-service per enabled app that listens on a port,
flaresolverr included; recyclarr serves no port in daemon mode and gets none.
Each ingress points at its own app's service. All containers share gluetun's
network namespace, so the services differ only in their port - they provide
stable per-app DNS names, not network separation. The StatefulSet's governing
serviceName no longer names a removed object.
jklein