Erich Blume
d26a6ae3b2
Comprehensive docs pass reflecting the new Fly proxy architecture: - Fly proxy routes through Caddy on indri (not per-service TS Ingress) - Direct WireGuard peering via --port=41641 pinning - DERP relay performance lesson in Tailscale docs - Caddy now in public traffic path - indri tagged as flyio-target - Removed fly-reload references - Updated architecture diagrams and per-service setup guide - Added changelog fragment Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
100 lines
3.3 KiB
Markdown
100 lines
3.3 KiB
Markdown
---
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title: Caddy
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modified: 2026-04-18
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tags:
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- service
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- networking
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- tls
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---
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# Caddy
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Reverse proxy for `*.ops.eblu.me` services with automatic TLS via ACME DNS-01.
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## Quick Reference
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| Property | Value |
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|----------|-------|
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| **Domain** | `*.ops.eblu.me` |
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| **HTTPS Port** | 443 |
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| **Config** | `ansible/roles/caddy/templates/Caddyfile.j2` |
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| **Binary** | Custom build with Gandi DNS plugin |
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## Why Caddy?
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Caddy provides a single TLS termination point for all BlumeOps services:
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- **Wildcard certificate** for `*.ops.eblu.me` via Let's Encrypt
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- **DNS-01 challenge** using Gandi API (no port 80 needed)
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- **Unified access** from k8s pods, containers, and tailnet clients
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See [[routing]] for when to use `*.ops.eblu.me` vs `*.tail8d86e.ts.net`.
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## Proxied Services
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### Indri-Local Services
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| Subdomain | Backend | Service |
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|-----------|---------|---------|
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| `forge.ops.eblu.me` | `localhost:3001` | [[forgejo]] |
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| `registry.ops.eblu.me` | `localhost:5050` | [[zot]] |
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| `jellyfin.ops.eblu.me` | `localhost:8096` | [[jellyfin]] |
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### Kubernetes Services
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K8s services are proxied via their Tailscale Ingress endpoints:
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| Subdomain | Backend | Service |
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|-----------|---------|---------|
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| `grafana.ops.eblu.me` | `grafana.tail8d86e.ts.net` | [[grafana]] |
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| `argocd.ops.eblu.me` | `argocd.tail8d86e.ts.net` | [[argocd]] |
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| `cv.ops.eblu.me` | `cv.tail8d86e.ts.net` | [[cv]] |
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| `docs.ops.eblu.me` | `docs.tail8d86e.ts.net` | [[docs]] (now publicly available at `docs.eblu.me` via [[flyio-proxy]]) |
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| `feed.ops.eblu.me` | `feed.tail8d86e.ts.net` | [[miniflux]] |
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| ... | ... | (see defaults/main.yml for full list) |
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### TCP Services (Layer 4)
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| Port | Backend | Service |
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|------|---------|---------|
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| 2222 | `localhost:2200` | Forgejo SSH |
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| 5432 | `pg.tail8d86e.ts.net:5432` | [[postgresql]] |
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## Configuration
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Caddy is managed via the `caddy` Ansible role:
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```bash
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# Deploy caddy changes
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mise run provision-indri -- --tags caddy
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```
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**Key files:**
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- `ansible/roles/caddy/defaults/main.yml` - Service definitions
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- `ansible/roles/caddy/templates/Caddyfile.j2` - Caddy config template
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## Secrets
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| Secret | Source | Description |
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|--------|--------|-------------|
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| `GANDI_BEARER_TOKEN` | 1Password | API token for DNS-01 challenges |
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The token is written to `~/.config/caddy/gandi-token` (chmod 0600) and sourced by the Caddy wrapper script.
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## Security Considerations
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Caddy has no authentication layer — it is a plain reverse proxy. Access control relies entirely on Tailscale ACLs restricting which devices can reach indri on port 443. Currently `tag:homelab`, `autogroup:admin`, and `tag:flyio-proxy` (via `tag:flyio-target` on indri) can reach Caddy.
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The [[flyio-proxy]] routes all public traffic through Caddy. This is the path for `*.eblu.me` requests from the public internet. Caddy sees these as requests from the Fly VM with `Host: *.ops.eblu.me` headers — the same routes used by tailnet clients.
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## Custom Build
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Custom `xcaddy` build with Gandi DNS and L4 plugins. See [[build-caddy-with-plugins]] for build instructions and forge mirror details.
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## Related
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- [[gandi]] - DNS hosting and ACME DNS-01 provider
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- [[routing]] - Service routing architecture
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- [[forgejo]] - Git forge (proxied by Caddy)
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- [[zot]] - Container registry (proxied by Caddy)
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- [[tailscale-operator]] - K8s services use Tailscale Ingress, then Caddy
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