Facebook has been scraping forge mirror repos at ~3-4 req/s, slowing
down the Forgejo instance. Serve robots.txt directly from nginx to
disallow /mirrors/ while leaving eblume/* accessible to crawlers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The general rate limit zone used $binary_remote_addr (Fly's internal
proxy IP), causing all external clients to share one bucket. Switch to
$http_fly_client_ip to match forge_auth's correct behavior.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
## Summary
- Adds a branded 503 error page served when upstreams are unreachable (indri offline, Tailscale tunnel down, emergency shutoff, etc.)
- Stale cache is still served first when available (`proxy_cache_use_stale` takes priority)
- Test endpoint at `docs.eblu.me/_error` to preview the page without killing upstreams
- `proxy_intercept_errors on` also catches error responses returned by the upstream itself
## Files Changed
- `fly/error.html` — Self-contained error page (dark theme, links to BlumeOps repo)
- `fly/nginx.conf` — `error_page`, `internal` location, `/_error` test location, `proxy_intercept_errors`
- `fly/Dockerfile` — COPY error.html into image
## Test Plan
- [ ] Deploy to Fly.io
- [ ] Visit `docs.eblu.me/_error` to verify the page renders
- [ ] Optionally stop indri/Tailscale to confirm the page shows on real 502/503/504
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/133
## Summary
- Start nginx after Tailscale connects (community best practice for Tailscale sidecars)
- Switch to `bluegreen` deploy strategy — old machine serves until new one is healthy
- Replace top-level `[checks]` with `[[http_service.checks]]` — only service-level checks gate traffic routing ([confirmed by Fly.io staff](https://community.fly.io/t/clarifying-the-types-of-health-checks/20379))
- Remove sentinel file and nginx if-check (no longer needed)
Supersedes the approach in #131 — that helped (502 window dropped from ~30s to ~3s) but couldn't fully eliminate it because top-level checks don't gate routing and Fly.io's proxy sends traffic as soon as the port is reachable.
## Deployment and Testing
- [ ] Merge and `fly deploy` from `fly/` directory
- [ ] Verify deploy completes with zero 502s (watch `fly logs` and Grafana docs-apm)
- [ ] Confirm `fly checks list` shows the new service-level check passing
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/132
## Summary
- Health check (`/healthz`) now returns 503 until Tailscale is connected
- `start.sh` creates `/tmp/tailscale-ready` sentinel after `tailscale up` succeeds
- Fly.io keeps the old machine serving traffic during the ~7s startup window
Previously, nginx passed the health check immediately, Fly.io routed traffic to the new machine, but MagicDNS wasn't available yet — causing upstream DNS timeouts and 502s on every request until Tailscale connected.
## Deployment and Testing
- [ ] Merge and `fly deploy` from `fly/` directory
- [ ] Verify deploy completes with zero 502s (check Grafana docs-apm dashboard)
- [ ] Confirm health check transitions from 503 → 200 in `fly logs`
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/131
## Summary
- Add `client_ip` field to the Fly.io nginx JSON log format, sourced from `Fly-Client-IP` header
- Extract `client_ip` in the Alloy pipeline so it's available as a parsed field in Loki
- Keeps `remote_addr` (the internal proxy IP) for debugging
Fixes: Grafana access logs for docs.eblu.me showing 172.16.11.178 for every request instead of real visitor IPs.
## Deployment and Testing
- [ ] Deploy updated fly.io proxy: `fly deploy` from `fly/` directory
- [ ] Verify in Grafana that new log lines include `client_ip` with real IPs
- [ ] Confirm `remote_addr` still shows the proxy IP (preserved for debugging)
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/130
## Summary
- Start nginx before Tailscale in `start.sh` so port 8080 is bound immediately, eliminating the "app is not listening on the expected address" WARNING during `fly deploy`
- Switch `proxy_pass` to use a variable with `resolver 100.100.100.100 valid=30s` so nginx can start without resolving MagicDNS names at config load time
- DNS results cached 30s per worker — no per-request lookup overhead
## Context
The WARNING was a race condition: Fly checks for listeners right after the machine starts, but `start.sh` ran ~5-10s of Tailscale setup before starting nginx. The health check always passed later, but the warning was noisy.
## Test plan
- [ ] Merge and let the deploy-fly workflow trigger
- [ ] Check runner logs for absence of the WARNING
- [ ] Verify `docs.eblu.me` still serves correctly
- [ ] Verify `/healthz` still passes
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/128
## Summary
- Adds a Fly.io reverse proxy (`blumeops-proxy`) that tunnels public traffic to homelab services over Tailscale
- First service exposed: `docs.eblu.me` — the Quartz static docs site
- Includes Pulumi IaC for Tailscale auth key/ACLs and Gandi DNS CNAME
- Adds mise tasks (`fly-deploy`, `fly-setup`, `fly-shutoff`) and Forgejo CI workflow
## Key details
- Fly.io Firecracker VMs support TUN devices natively — no userspace networking needed
- Tailscale auth key is `preauthorized=True` to avoid device approval hangs on container restarts
- nginx caches aggressively for the static site; health check is on the default_server block
- ACLs restrict `tag:flyio-proxy` to `tag:k8s` on port 443 only
- DNS CNAME deployed and verified: `docs.eblu.me` → `blumeops-proxy.fly.dev`
## Test plan
- [x] `curl -sf https://blumeops-proxy.fly.dev/healthz` returns `ok`
- [x] `curl -I -H "Host: docs.eblu.me" https://blumeops-proxy.fly.dev/` returns 200 with `X-Cache-Status`
- [x] `curl -I https://docs.eblu.me/` returns 200 with valid Let's Encrypt cert
- [x] `dig forge.ops.eblu.me` still resolves to 100.98.163.89 (private services unaffected)
- [x] Set `FLY_DEPLOY_TOKEN` Forgejo Actions secret for CI auto-deploy
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/120
