sam-4screen-desktop 2026-5-20:11:40:20

2026-05-20 11:40:20 +10:00
parent 809fa0b4ea
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+---
+created: 2026-05-20 09:30
+modified: 2026-05-20 09:30
+type: note
+tags: [dev-ops, network, backup, system-config]
+aliases: [borg-backups]
+---
+# [[Backup System — Borg, Kopia & Restic]]
+
+## Overview
+
+Three-machine backup with dual-copy (local + network) covering all critical data.
+
+| Machine | Tool | Target | Schedule |
+|---------|------|--------|----------|
+| **.27** — sam-4screen-desktop | Borg (SSH) | `.13:/mnt/ubuntu_storage_3TB/backup/borg/.27` | Daily (after boot) |
+| **.13** — nixos-desktop | Borg (local) | `/mnt/ubuntu_storage_3TB/backup/borg/.13` + rsync→.35/.23 | Daily 04:00 / 05:00 |
+| **.35** — sam-ubuntu1 | Kopia + Backrest | `.23` NFS (`usb_3tb`) | Weekly Sun 22:00 |
+
+---
+
+## .27 — sam-4screen-desktop
+
+**Source**: `/home/sam/` (excl: `.cache`, `.npm`, `node_modules`, `.venv`, `target`, `.cargo`, etc.)
+**Target**: `sam@192.168.20.13:/mnt/ubuntu_storage_3TB/backup/borg/.27` via SSH (key: `~/.ssh/id_ed25519`)
+**Schedule**: systemd timer — `OnCalendar=daily` (fires midnight, catches up after boot via Persistent)
+**Prune**: 7 daily, 4 weekly, 3 monthly
+**Passphrase**: `/home/sam/.borg-passphrase`
+**Config**: `/etc/nixos/hosts/sam-4screen-desktop/backup.nix`
+**Status**: `systemctl status borgbackup-job-home-to-13.service`
+**Snapshots**: `borg list sam@192.168.20.13:/mnt/ubuntu_storage_3TB/backup/borg/.27`
+
+## .13 — nixos-desktop
+
+**Source**: Docker configs (`/home/sam/Docker/`), PocketBase (`/home/sam/pocketbase-data/`), dotfiles, `.ssh/`
+**Primary**: `/mnt/ubuntu_storage_3TB/backup/borg/.13` (local ext4, 2.7T, 2.6T free)
+**Secondary**: rsync → `sam@192.168.20.35:/mnt/nfs_usb_3tb/borg-repos/.13` → `.23` USB
+**Schedule**: Borg daily 04:00 | rsync daily 05:00
+**Prune**: 7 daily, 4 weekly, 3 monthly
+**Passphrase**: `/home/sam/.borg-passphrase` (same as .27 recommended)
+**Config**: `/etc/nixos/backup.nix`
+**Snapshots**: `borg list /mnt/ubuntu_storage_3TB/backup/borg/.13`
+
+> ⚠️ Borg runs as root — `postHook` chowns to `sam:users`. Known hosts issue: `/home/sam/.ssh/known_hosts` was a broken directory (fixed).
+
+## .35 — sam-ubuntu1
+
+**Tools**: Kopia + Backrest (Restic) — Docker containers
+**Sources**: `/Docker/Containers/`, `/docker-config`, `/docker-volumes`, `/host_fs/root/trilium-data`
+**Target**: `//192.168.20.23/usb_3tb` → `/mnt/nfs_usb_3tb/`
+- Kopia repo: `/mnt/nfs_usb_3tb/kopia/backups/` (46G)
+- Restic repo: `/mnt/nfs_usb_3tb/backups/restic/` (11G)
+**Schedule**: 
+- Kopia: Weekly Sun 22:00 (retention: 10 latest, 4 weekly, 12 monthly, 3 annual)
+- Backrest: Weekly Sun 23:00 (prune/check daily)
+**VM-level**: Proxmox Backup Server (.48)
+
+## .23 — file-server
+
+- 2.7T USB drive shared via CIFS/SMB to `.35`
+- Backup repos consume ~57G, 2.5T free
+- Also stores: `sam/` (personal docs/music/photos)
+
+## Restore Commands
+
+### .27 restore
+```bash
+export BORG_PASSPHRASE=$(cat /home/sam/.borg-passphrase)
+borg extract sam@192.168.20.13:/mnt/ubuntu_storage_3TB/backup/borg/.27::<archive>
+```
+
+### .13 restore
+```bash
+export BORG_PASSPHRASE=$(cat /home/sam/.borg-passphrase)
+borg extract /mnt/ubuntu_storage_3TB/backup/borg/.13::<archive>
+```
+
+## Not Covered
+
+- `.27`: Git-tracked NixOS config (already covered by flakes)
+- `.13`: Git-tracked NixOS config, `ollama`/`open-webui` Docker volumes, old Windows drives
+- `.35`: Ubuntu VM filesystem (covered by Proxmox PBS), Obsidian vault (in Docker, covered by Kopia)