Deploy Fly.io Proxy / deploy (push) Successful in 1m16s

Details

Add Fly.io proxy observability via embedded Alloy (#123 )

## Summary

- Embed Grafana Alloy in the Fly.io proxy container to collect nginx JSON access logs (→ Loki) and derive request rate, latency histogram, cache status, and bandwidth metrics (→ Prometheus)
- Add nginx `stub_status` endpoint for connection-level metrics (active/reading/writing/waiting)
- Create two Grafana dashboards: **Docs APM** (per-service view filtered by `host="docs.eblu.me"`) and **Fly.io Proxy Health** (aggregate proxy health across all upstream services)

## Changed Files

| File | Change |
|------|--------|
| `fly/nginx.conf` | Add JSON `log_format` + `access_log`, add `stub_status` endpoint |
| `fly/Dockerfile` | COPY Alloy binary from `grafana/alloy:v1.5.1`, COPY `alloy.river` config |
| `fly/alloy.river` | **New** — Alloy config: log tailing, metric extraction, remote_write |
| `fly/start.sh` | Start Alloy after Tailscale, before nginx |
| `argocd/manifests/grafana-config/dashboards/configmap-docs-apm.yaml` | **New** — Docs APM dashboard |
| `argocd/manifests/grafana-config/dashboards/configmap-flyio.yaml` | **New** — Fly.io Proxy Health dashboard |
| `argocd/manifests/grafana-config/kustomization.yaml` | Register new dashboard configmaps |
| `docs/reference/services/flyio-proxy.md` | Document observability setup |

## Deployment and Testing

- [ ] `mise run fly-deploy` — rebuild container with Alloy
- [ ] `curl https://docs.eblu.me/` — generate traffic
- [ ] `fly logs -a blumeops-proxy` — verify Alloy startup
- [ ] Query Prometheus: `flyio_nginx_http_requests_total{instance="flyio-proxy"}`
- [ ] Query Loki: `{instance="flyio-proxy", job="flyio-nginx"}`
- [ ] `argocd app sync grafana-config` — deploy dashboards
- [ ] Verify dashboards show data in Grafana
- [ ] `mise run services-check` — no regressions

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/123

2026-02-08 10:05:38 -08:00

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title

Loki

Log aggregation system for BlumeOps infrastructure.

Quick Reference

Property	Value
URL	https://loki.ops.eblu.me
Tailscale URL	https://loki.tail8d86e.ts.net
Namespace	`monitoring`
Image	`grafana/loki:3.4.2`
Storage	50Gi PVC
Retention	31 days

Architecture

Single-node deployment with filesystem storage
TSDB index with 24h period
Logs collected by alloy and pushed via Loki API
Queried via grafana

Log Sources

From Indri (via Alloy):

forgejo, tailscale (brew services)
alloy, borgmatic, zot, jellyfin (LaunchAgents)

From Kubernetes (via Alloy DaemonSet):

All pods in all namespaces

From Fly.io proxy (via embedded Alloy):

nginx JSON access logs ({instance="flyio-proxy", job="flyio-nginx"})

Query Examples (LogQL)

{service="forgejo"}                     # All forgejo logs
{service="borgmatic", stream="stderr"}  # Borgmatic errors
{host="indri"} |= "error"               # All logs containing "error"
{instance="flyio-proxy"} |= "docs.eblu.me" # Fly.io proxy access logs for docs

alloy - Log collector
grafana - Log visualization
prometheus - Metrics counterpart

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