Erich Blume c1e7497e12 Add offsite backup for immich photo library to BorgBase

Adds a second borgmatic config (photos.yaml) that backs up /Volumes/photos
(sifaka SMB mount) to a dedicated BorgBase repo, running daily at 4 AM.
Refactors borgmatic metrics to support multiple repos with a `repo` label,
and updates the Grafana dashboard with a repo selector variable.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-27 19:20:12 -07:00

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Borgmatic

Daily backup system using Borg backup, running on indri.

Quick Reference

Property	Value
Install	mise (pipx)
Main config	`~/.config/borgmatic/config.yaml`
Photos config	`~/.config/borgmatic/photos.yaml`
Main schedule	Daily at 2:00 AM
Photos schedule	Daily at 4:00 AM
Main targets	sifaka local + BorgBase offsite
Photos target	BorgBase offsite only

What Gets Backed Up

Directories:

~/code/personal/zk - Zettelkasten
/opt/homebrew/var/forgejo - Git forge data
~/.config/borgmatic - Borgmatic config
~/Documents - Personal documents
~/.local/share/borgmatic/k8s-dumps/ - SQLite dumps from k8s pods

PostgreSQL databases:

miniflux on postgresql
teslamate on postgresql

K8s SQLite databases (pre-backup dump via kubectl exec):

mealie - Recipe manager (/app/data/mealie.db)

Immich photo library (separate config, BorgBase offsite only):

/Volumes/photos (sifaka SMB mount, ~128 GB)

Not backed up (by design):

ZIM archives (re-downloadable)
Prometheus metrics (ephemeral)
Loki logs (ephemeral)

Retention Policy

Period	Count
Daily	7
Monthly	12
Yearly	1000

Monitoring

Metrics exposed via textfile collector to prometheus:

borgmatic_up - Repository accessibility
borgmatic_last_archive_timestamp - Last backup time
borgmatic_repo_deduplicated_size_bytes - Disk usage

Dashboard: "Borgmatic Backups" in grafana

backups - Full backup policy
sifaka - Backup target
postgresql - Database backups
restore-1password-backup - Recover 1Password from backup

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