Add comprehensive NetworkPolicy support for Jellyfin pod with:
- Ingress rules: configurable external access or namespace/pod selectors
- Egress rules: DNS resolution, metadata providers, custom rules
- Automatic Prometheus integration when metrics are enabled
- DLNA/hostNetwork detection with fail-safe error message
- Support for restrictedEgress mode for high-security environments
The NetworkPolicy is disabled by default to maintain backward compatibility.
When enabled, it provides fine-grained control over network traffic:
- Who can access Jellyfin (ingress)
- What external connections Jellyfin can make (egress)
NetworkPolicy requires CNI plugin support (Calico, Cilium, etc.) and
cannot be used with hostNetwork mode (DLNA). The template includes
validation to prevent misconfiguration.
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>
