119 lines
5.1 KiB
Markdown
119 lines
5.1 KiB
Markdown
# Borg Backup Scope for KalliLabcore
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Stand: 2026-05-16
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This file defines the target state for replacing Backrest with Borg in this homelab.
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## Goal
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Use Borg as the single backup system for:
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- critical file-backed application data
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- secrets, keys, and reverse-proxy state
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- database dumps generated before each Borg backup
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Do not back up raw live database storage directories as the primary recovery artifact.
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## Strategy
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1. A pre-backup dump script runs on the host and writes fresh dumps to `/mnt/user/backups/borg/dumps/latest`.
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2. Borg backs up `/local/borg-dumps` plus the critical mounted paths below.
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3. Borg retention handles history; the dump directory itself keeps only the latest artifacts.
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The inclusion of `/local/secrets` is intentional: Borg is expected to cover disaster recovery for selected secret material as part of the current homelab restore strategy.
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## Service Inventory
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| Service | Recovery Method | What Borg Should Capture |
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| --- | --- | --- |
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| Vaultwarden | SQLite dump + file data | `/local/borg-dumps`, `/local/appdata/vaultwarden` |
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| Paperless | DB dump + file data | `/local/borg-dumps`, `/local/appdata/paperless-ngx/data`, `/local/paperless/media`, `/local/paperless/export`, `/local/paperless/consume` |
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| Immich | DB dump + file data | `/local/borg-dumps`, `/local/immich/upload`, `/local/immich/external` |
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| Gitea | SQLite dump + file data | `/local/borg-dumps`, `/local/gitea/data` |
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| Mealie | DB dump + file data | `/local/borg-dumps`, `/local/appdata/mealie/data` |
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| Mail-archiver | shared Postgres dump + data protection keys | `/local/borg-dumps`, `/local/appdata/mailarchiver/data-protection-keys` |
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| Authelia | shared Postgres dump + config + secrets | `/local/borg-dumps`, `/local/appdata/authelia/config`, `/local/secrets` |
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| Traefik | file data | `/local/appdata/traefik` |
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| ntfy | file data | `/local/appdata/ntfy` |
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| Paperless-GPT | file data | `/local/appdata/paperless-gpt` |
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| Tailscale | file data | `/local/appdata/tailscale` |
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| AdGuard | config only | `/local/appdata/adguard/conf` |
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| Borg UI | SQLite dump + self-backup | `/local/borg-dumps`, `/local/appdata/borg-ui/data` |
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| Komodo | config + Mongo dump | `/local/borg-dumps`, `/local/appdata/komodo/periphery`, `/local/appdata/komodo/core` |
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| GitOps host automation | repo clone + Komodo workspaces + host-check state | `/local/services/homelab-infra`, `/local/services/stacks`, `/local/services/posture-check` |
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| Nextcloud | DB dump + file data | `/local/borg-dumps`, `/local/appdata/nextcloud/html`, `/local/nextcloud/data` |
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| Grafana | SQLite dump + file data | `/local/borg-dumps`, `/local/appdata/grafana` |
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| Filebrowser | file-backed state dump + file data | `/local/borg-dumps`, `/local/appdata/filebrowser` |
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| InfluxDB 3 Core | file data | `/local/appdata/influxdb3/data`, `/local/appdata/influxdb3/plugins` |
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| Hermes Agent | file data + SSH key | `/local/appdata/hermes-agent/data`, `/local/secrets/hermes_runner_id_ed25519` |
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| BentoPDF | rebuildable | no critical persistence in compose |
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## Open Decisions and Coverage Gaps
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These are deviations from the standard "DB dump first, file path second" strategy. Decide deliberately, do not silently extend.
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### Nextcloud
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Option A umgesetzt: `pre-backup-dumps.sh` writes `nextcloud.dump` from `nextcloud-postgres`. Borg UI also mounts `/mnt/user/documents/nextcloud-data` read-only as `/local/nextcloud/data`, so database and user files are both inside scope after the Borg UI stack is recreated.
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### Komodo Mongo dump
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`komodo-mongo.archive.gz` was produced and verified on 2026-05-04 (`gzip -t` ok). The dump function is in place in `pre-backup-dumps.sh`. Re-verify after any Komodo or Mongo major upgrade.
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### GitOps host automation
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The live Unraid User Scripts execute repo scripts from `/mnt/user/services/homelab-infra`, while Komodo keeps stack workspaces below `/mnt/user/services/stacks`. These paths are now mounted into Borg UI as `/local/services/...` and included explicitly so host-side script hotfixes, stack workspace state, and posture-check state are recoverable.
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## Database Dumps Required
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### Shared PostgreSQL (`postgresql17`)
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- `mailarchiver`
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- `paperless`
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- `authelia`
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### Dedicated PostgreSQL
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- `mealie`
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- `immich`
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- `nextcloud`
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### Other Databases
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- Komodo MongoDB
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- SQLite: `gitea`, `vaultwarden`, `uptime-kuma`, `speedtest-tracker`, `borg-ui`, `grafana`
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- File-backed state: `filebrowser.bolt.dump`
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## Explicitly Not Backed Up as Raw Live DB Files
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- `/mnt/user/appdata/postgresql17`
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- `/mnt/user/appdata/mealie/postgres`
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- `/mnt/user/appdata/immich_postgres`
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- `/mnt/user/appdata/nextcloud/postgres`
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- `/mnt/user/appdata/komodo/mongo`
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- `/mnt/user/appdata/redis`
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- `/mnt/user/appdata/scrutiny/influxdb`
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## Low-Priority / Rebuildable
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These are not part of the first-class Borg scope:
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- Plex metadata and cache
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- AdGuard query log
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- code-server extensions cache
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- uptime-kuma
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- scrutiny metrics history
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- dozzle, glances, speedtest
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## Suggested Retention
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- daily: 7
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- weekly: 4
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- monthly: 6
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## Repository Recommendation
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Recommended primary Borg repository: `critical-infra`
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Primary sources are listed in `all-important-sources.txt`.
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