blumeops/docs/reference/services/prometheus.md
Erich Blume b197bd5f58 Adopt Dagger CI for docs build (Phase 2) (#157)
## Summary

Migrates the docs build pipeline to Dagger (Phase 2 of the Dagger CI adoption plan).

- **Backfill `date-modified` frontmatter** on all 80 docs — Dagger's `--src=.` excludes `.git`, so Quartz can't use git history for page dates. Frontmatter dates work with or without git.
- **New `docs-check-frontmatter` mise task + pre-commit hook** — validates all docs have `title`, `tags`, and `date-modified`
- **New Dagger functions** — `build_changelog` (towncrier in Python container) and `build_docs` (chains changelog → Quartz build in Node container, returns tarball)
- **Simplified CI workflow** — the ~44-line inline Quartz build (clone, npm ci, build, tar, cleanup) is replaced by `dagger call build-docs`. Changelog step remains local on the runner since towncrier needs to modify the host working tree for the git commit.

### Design decisions

- **Towncrier runs twice in CI**: once inside Dagger (for the docs tarball) and once on the runner (for the git commit). This is intentional — Dagger's directory export is additive and can't delete the consumed changelog fragments from the host.
- **Artifact hosting stays on Forgejo Releases** (not migrated to Forgejo Packages as the plan doc originally suggested). That migration can happen independently.
- **`date-modified` frontmatter** preserved even though `build_changelog` installs git — the git there is only for towncrier's `git add` call, not for history. The local iteration story (`dagger call build-docs --src=. --version=dev` with uncommitted changes) depends on frontmatter dates.

### Local iteration

```bash
dagger call build-docs --src=. --version=dev export --path=./docs-dev.tar.gz
tar tf docs-dev.tar.gz | head -20
```

## Deployment and Testing

- [x] `dagger call build-docs --src=. --version=dev` produces valid 1.1MB tarball (149 HTML pages)
- [x] Pre-commit hooks pass (including new `docs-check-frontmatter`)
- [ ] Full `workflow_dispatch` run after merge

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/157
2026-02-11 16:33:16 -08:00

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1.1 KiB
Markdown

---
title: Prometheus
date-modified: 2026-02-08
tags:
- service
- observability
---
# Prometheus
Metrics storage and querying for BlumeOps infrastructure.
## Quick Reference
| Property | Value |
|----------|-------|
| **URL** | https://prometheus.ops.eblu.me |
| **Tailscale URL** | https://prometheus.tail8d86e.ts.net |
| **Namespace** | `monitoring` |
| **Image** | `prom/prometheus:v3.2.1` |
| **Storage** | 50Gi PVC |
| **Manifests** | `argocd/manifests/prometheus/` |
## Data Sources
### Remote Write (from Alloy)
- Indri system metrics via [[alloy|Alloy]] remote_write
- Textfile metrics: minikube, borgmatic, zot, jellyfin
- [[flyio-proxy]] nginx metrics (`flyio_nginx_*`) via Alloy embedded in Fly.io container
### Scrape Targets
| Target | Metrics |
|--------|---------|
| `sifaka:9100` | [[sifaka|Sifaka]] NAS (node_exporter) |
| `cnpg-metrics.tail8d86e.ts.net:9187` | [[postgresql|CloudNativePG]] metrics |
| `kube-state-metrics.monitoring.svc:8080` | Kubernetes resource metrics |
## Related
- [[alloy|Alloy]] - Metrics collector
- [[grafana]] - Visualization
- [[loki]] - Logs counterpart