Files
home-network-k3s-impl/platform/cloudflared/README.md
jakman85andClaude Opus 5.5 8fe8d5df8a
gate / gate (pull_request) Successful in 1m14s
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feat(dns): PiHole answers an explicit LAN name list, not a zone wildcard
Public names are proxied CNAMEs to the Cloudflare Tunnel since PR #156 and
work from the LAN, so they should resolve publicly there too. Replace the
address=/${BASE_DOMAIN}/ wildcard with explicit entries: the LAN-only names
(derived from every controller:none HTTPRoute), gitea/nextcloud (off
Cloudflare's 100 MB / 100 s limits), keycloak/auth, and the L4 VIPs.

Add L0 check pihole-lan-names, mutation-tested. Correct docs that still
described public names as CNAME to wan. and the cloudflared entrypoint comment.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-11-08 19:51:49 -06:00

2.0 KiB

platform/cloudflared

Cloudflare Tunnel connector: inbound HTTPS from the Cloudflare edge to the shared Gateway, outbound-only from the cluster (no router port forward, no hairpin, no split-DNS dependency).

  • Flux tier: clusters/base/cloudflared.yaml — its own Kustomization, dependsOn: [platform-config], wait: false, and nothing depends on it. A missing or invalid credential can affect only the tunnel.
  • Runbook (enrolment, canary, alerts, rollback): runbooks/cloudflare-tunnel.md
  • Design record: decisions/2026-11-08-cloudflare-tunnel.md
  • Guard: conformance/tests/l0-static/cloudflared-ingress-rules
File What it is
config.yaml The locally-managed tunnel: literal tunnel UUID + ingress rules. LAN/VPN-only hosts → 404, apex + wildcard → https://cilium-gateway-shared.gateway.svc.cluster.local:443 with matchSNItoHost, catch-all 404. Never the Kubernetes API.
cloudflared-credentials.sops.yaml SOPS-encrypted tunnel credentials JSON. Ships with REPLACE-ME; the operator fills it.
deployment.yaml 2 replicas, hard spread across nodes, non-root, read-only root fs, pinned digest; PDB minAvailable: 1.
networkpolicy.yaml default-deny (single owner — not an app namespace) + Prometheus scrape allow + egress CNP: world 7844 tcp/udp and 443, the Gateway (ingress entity), and Gateway backends by gateway-access=shared minus the LAN-only namespaces.
servicemonitor.yaml, alerts.yaml Headless metrics Service + ServiceMonitor scraping :2000, and the two alerts, both written to fire (not go quiet) when their series vanish.

Cloudflare sends a hostname through the tunnel only when its DNS record is a proxied CNAME to <UUID>.cfargotunnel.com; nothing in this directory creates one. Those records are published by external-dns from the shared Gateway's target annotation (Phase 2, PR #156; see platform/externaldns/README.md). LAN resolution: catalog/pihole.yaml (explicit names only since 2026-11-09), so public names reach Cloudflare from the LAN too.