Erich Blume
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## 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
55 lines
1.3 KiB
Markdown
55 lines
1.3 KiB
Markdown
---
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title: Loki
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tags:
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- service
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- observability
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---
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# Loki
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Log aggregation system for BlumeOps infrastructure.
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## Quick Reference
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| Property | Value |
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|----------|-------|
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| **URL** | https://loki.ops.eblu.me |
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| **Tailscale URL** | https://loki.tail8d86e.ts.net |
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| **Namespace** | `monitoring` |
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| **Image** | `grafana/loki:3.4.2` |
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| **Storage** | 50Gi PVC |
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| **Retention** | 31 days |
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## Architecture
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- Single-node deployment with filesystem storage
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- TSDB index with 24h period
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- Logs collected by [[alloy|Alloy]] and pushed via Loki API
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- Queried via [[grafana]]
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## Log Sources
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**From Indri (via Alloy):**
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- forgejo, tailscale (brew services)
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- alloy, borgmatic, zot, jellyfin (LaunchAgents)
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**From Kubernetes (via Alloy DaemonSet):**
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- All pods in all namespaces
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**From Fly.io proxy (via embedded Alloy):**
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- nginx JSON access logs (`{instance="flyio-proxy", job="flyio-nginx"}`)
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## Query Examples (LogQL)
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```logql
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{service="forgejo"} # All forgejo logs
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{service="borgmatic", stream="stderr"} # Borgmatic errors
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{host="indri"} |= "error" # All logs containing "error"
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{instance="flyio-proxy"} |= "docs.eblu.me" # Fly.io proxy access logs for docs
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```
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## Related
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- [[alloy|Alloy]] - Log collector
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- [[grafana]] - Log visualization
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- [[prometheus]] - Metrics counterpart
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