104 lines
8.3 KiB
Markdown
104 lines
8.3 KiB
Markdown
# Public ingress — VPS traefik + cert mirror
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How home services reach the open internet without exposing the home network. Two-stage pattern: traefik on the IONOS VPS terminates TLS at the public edge, then reverse-proxies over the netbird mesh to home Caddy / direct backends.
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## The shape
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```
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Public client
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│ *.hubris.network → 82.165.190.79 (IONOS wildcard)
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▼
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[VPS traefik] priority 1: HostSNI(*) → netbird-proxy:8443 ← netbird control plane
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priority 10: per-host HTTP routers ← home services
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│ HTTP over netbird mesh
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▼
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[Home backend on 192.168.8.x]
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```
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LAN clients resolve via the [Technitium DNS on dns (107)](dns.md) → `192.168.8.175` → home [Caddy (121)](../containers/121-caddy.md), unchanged. The two paths are independent.
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## Why this shape
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- VPS traefik already has a HostSNI(*) TCP passthrough at priority 1 so netbird's own ingress (`netbird.hubris.network`, future `*.proxy.hubris.network`) is unaffected.
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- Per-hostname HTTP file-provider routers at priority 10 win over the passthrough for the listed hosts and let traefik terminate TLS itself for those.
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- Traefik's own ACME (`letsencrypt` resolver) fails on this box: HostSNI(*) grabs TLS-ALPN-01 challenges before traefik's `allowACMEByPass=true` can respond. Solution: home Caddy obtains certs via IONOS DNS-01 (no conflict) and the VPS *mirrors* the result over.
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## Components
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### On the VPS (`82.165.190.79`)
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- `/opt/traefik-dynamic.yaml` — file-watched dynamic config. One `http.routers.<name>-public` + one `http.services.<name>-public` per exposed service, plus one entry in the top-level `tls.certificates` list per hostname.
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- Let's-Encrypt-effective directory: `/letsencrypt/` inside the traefik container, backed by the host-side docker volume `opt_netbird_traefik_letsencrypt`.
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- Backups before edits: `cp /opt/traefik-dynamic.yaml /opt/traefik-dynamic.yaml.bak.$(date +%s)` — several bak files live alongside.
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### On the PVE host (`192.168.8.77`)
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- `/usr/local/bin/hubris-public-cert-sync.sh` — runs daily via `hubris-public-cert-sync.timer`. Maps source hostname → VPS cert filenames in a bash assoc array. For each mapping: `pct pull` cert+key from [Caddy (121)](../containers/121-caddy.md)'s store, diff against the VPS copy, scp only on change.
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- Filenames are stable per host so the dynamic.yaml never needs editing on renewal — traefik file-watches and hot-reloads the cert.
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## Services currently exposed
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| Hostname | Path scope | Backend | Middlewares | Cert files on VPS |
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| ------------------------------ | -------------------------------- | -------------------------------- | -------------------------------------------- | ------------------------------------------ |
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| `artifacto.hubris.network` | `/p/*`, `/static/*`, `/healthz` | `192.168.8.205:3100` | `artifacto-strip-sso` + `artifacto-ratelimit` (50 rps / 100 burst) | `fullchain.crt` / `privkey.key` |
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| `blog.hubris.network` | whole host | `192.168.8.205:8080` | `blog-ratelimit` (100 rps / 200 burst) | `blog.fullchain.crt` / `blog.privkey.key` |
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| `trmnl.hubris.network` | whole host | `192.168.8.211:9851` ([trmnl 128](../containers/128-trmnl.md)) | `trmnl-ratelimit` (20 rps / 40 burst) | `trmnl.fullchain.crt` / `trmnl.privkey.key` |
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| `house.hubris.network` | whole host | `192.168.8.212:3000` ([house 129](../containers/129-house.md)) | `house-ratelimit` (30 rps / 60 burst) | `house.fullchain.crt` / `house.privkey.key` |
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`artifacto-strip-sso` blanks inbound `X-Authentik-*` and `X-Artifacto-Gateway` so external clients can't spoof the SSO auto-login header contract. Path split is enforced at the VPS router rule, not by home Caddy. See [Artifacto on apps (105)](../containers/105-apps.md).
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### `auth.hubris.network` — different pattern (local container, not cert-mirror)
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Since 2026-05-31 [Authentik runs on the VPS itself](../investigations/2026-05-31-authentik-vps-migration.md), so `auth.hubris.network` is served by a **local Docker container**, not proxied to a home backend. It therefore does **not** use the file-provider + cert-mirror pattern above:
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- Routed via traefik **Docker provider labels** on the `authentik-server` service (`/opt/docker-compose.yml`), not `traefik-dynamic.yaml`.
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- TLS via traefik's own `letsencrypt` resolver (works here because it's a normal HTTP router, not the HostSNI passthrough).
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- Traefik reaches it over the `auth` Docker network (`172.30.1.0/24`); Postgres/Redis on that net are isolated from the netbird containers.
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- Admin UI is IP-gated: an `admin-allowlist` ipAllowList middleware on `PathPrefix(/if/admin/)` (currently `5.61.168.0/24`). Login/flow endpoints stay public.
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No cert-mirror entry and no `hubris-public-cert-sync.sh` mapping is needed for `auth`.
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## Recipe — exposing another service
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1. Ensure home Caddy on [LXC 121](../containers/121-caddy.md) already serves the hostname (cert exists at `/var/lib/caddy/.local/share/caddy/certificates/acme-v02.api.letsencrypt.org-directory/<host>/`).
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2. Add an entry to `HOSTS` in `/usr/local/bin/hubris-public-cert-sync.sh` mapping the hostname → VPS filenames. Run once: `systemctl start hubris-public-cert-sync.service`. Confirm the cert landed.
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3. Edit `/opt/traefik-dynamic.yaml` on the VPS:
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- Add to `tls.certificates`: paths `/letsencrypt/<crt>` and `/letsencrypt/<key>`.
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- Add `http.routers.<host>-public`: `rule: 'Host(\`<host>\`)'` (or with path matchers if scope-gating), `entryPoints: [websecure]`, `priority: 10`, `tls: {}`, `service: <host>-public`, `middlewares: [...]`.
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- Add a ratelimit middleware under `http.middlewares` if wanted.
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- Add `http.services.<host>-public.loadBalancer.servers[0].url: 'http://<lan-ip>:<port>'`.
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4. Verify:
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```
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ssh root@100.122.165.149 'curl -skI --resolve <host>:443:127.0.0.1 https://<host>/' # 2xx/3xx
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curl -skI --resolve <host>:443:<vps-public-ip> https://<host>/ # same
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```
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5. **No DNS edit needed** — the IONOS wildcard already points at the VPS.
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## What does NOT follow this pattern
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- `netbird.hubris.network` (and any future `*.proxy.hubris.network`) uses the netbird-proxy / HostSNI passthrough path. Netbird handles its own cert via ACME cleanly because it *is* the passthrough target.
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## Related
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- [DNS split-horizon](dns.md)
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- [Caddy (121)](../containers/121-caddy.md) — cert source, internal counterpart
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- [Mesh migration](mesh.md) — netbird is the transport between VPS and home
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- [VPS hardening](vps-hardening.md) — fail2ban / nftables that the access logs feed
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- [Artifacto on apps (105)](../containers/105-apps.md) — first publicly-exposed service
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## Changelog
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### 2026-06-24 — `trmnl.hubris.network` exposed
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TRMNL plugins middleware on [trmnl (128)](../containers/128-trmnl.md). File-provider router `trmnl-public` → `192.168.8.211:9851`, `trmnl-ratelimit` (20 rps / 40 burst), cert mirrored as `trmnl.fullchain.crt`/`trmnl.privkey.key`. Verified live from the internet (200 with token / 401 without). It was provisioned during a mesh outage — the `home-lab-network` (192.168.8.0/24) route had no active routing peer because the **mac-mini routing peer's netbird was down** (all home-backed public services 504'd). Bringing netbird up on mac-mini restored the route; no traefik change was needed.
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### 2026-05-31 — `auth.hubris.network` now served locally on the VPS
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Authentik migrated onto the VPS ([investigation](../investigations/2026-05-31-authentik-vps-migration.md)). Unlike the home-backed services above, `auth` is a local container routed via traefik Docker-provider labels with traefik-managed Let's Encrypt — no cert-mirror, no `traefik-dynamic.yaml` router. Admin UI gated by an ipAllowList middleware. Traefik gained a second Docker network (`auth`, `172.30.1.0/24`) to reach it while keeping its DB/Redis isolated from the netbird stack.
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### 2026-04-28 — wiki entry created
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Initial documentation.
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### 2026-04-23 — `blog.hubris.network` exposed
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WriteFreely on [apps (105)](../containers/105-apps.md). Whole host is public.
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### 2026-04-22 — pattern established with Artifacto
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First service through the file-provider router. IONOS wildcard moved to the VPS this day. Cert mirror script + timer deployed on the PVE host.
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