Personal infrastructure notes

Start here:

• backup-strategy.md — what is backed up, by which tool, on what schedule, and how to restore.
• new-container.md — conventions for adding a service to ks4 (and getting it backed up automatically).

Tech notes

• nuc/ — home lab on nuc (see below)
• ks4/ — prod server ks4 at OVH (see below)
• ks2/ — legacy backup server being decommissioned
• archer-c7/ — home router (TP-Link Archer C7 v5 running on OpenWrt)

Homelab: nuc

Incus host on the LAN.

• Debian 13, Intel Alder Lake-N (iGPU i915, shared by both Jellyfin containers) — bare-metal reinstall: nuc/nuc-install.md
• Instances are bridged onto the LAN (192.168.0.0/24)
• USB 4 TB WD Red: ZFS pool usb4t — usb4t/backup → /backup (incus exports, nuc/ + ks4/ subdatasets, 1 TB quota) and usb4t/media → /srv/media (media library, shared into containers via shift=true disk devices; works because ZFS ≥ 2.2 supports idmapped mounts)
• Backups: all local instances replicated to the USB pool (/root/scripts/incus-copy.sh -p backup -s nucbackup; replicas stopped, autostart off) — see nuc/nuc-install.md; ks4 replicas pulled into pool ks4backup — see ks4/incus-copy.md

Instances

Name	IP	Doc	Features
jellyfin-server	192.168.0.5	✅	unprivileged, autostart; iGPU render node (gpu device, render gid) for QSV/VAAPI transcoding; /srv/media disk device (shift=true); proxy device → host :8096
jellyfin-client	192.168.0.6	✅	privileged, autostart; full iGPU (gpu device, gid 44) → HDMI kiosk (cage + Jellyfin Media Player); custom raw.lxc (bind /dev/snd, /dev/input, host /run/udev); Pioneer USB audio as ALSA default; FR keymap; go-librespot Spotify Connect ("Pioneer A-70")
transmission-bt	192.168.0.7	✅	unprivileged, autostart; always-on WireGuard full tunnel → ks4 (egress = 193.70.35.17, kill switch: no default route); /srv/media disk device (shift=true), downloads to /media/downloads; web UI :9091 (LAN only)
blocky	192.168.0.254	—	unprivileged, autostart; DNS ad-blocker
privoxy	192.168.0.11	—	unprivileged, autostart; filtering HTTP proxy
homeassistant	(stopped)	—	virtual machine, 50 GiB root disk on pool data

Prod: ks4

Incus host at OVH — public-facing self-hosted services.

• Debian 13, Xeon D-1521 / 32 GiB, 2× 6 TB (OS on mdraid RAID1, ZFS pool data on sda5) — setup & rebuild: ks4/install.md
• SSH: ssh -i id_rsa_claude -p 2233 julien@193.70.35.17 (julien has passwordless sudo incus …)
• Instances are on a NAT bridge incusbr0 (192.168.1.0/24); public ingress via Incus proxy devices. gateway (nginx) is the sole HTTP/S entry point and fans out to the app containers.
• Services: gateway, mail, nextcloud, seafile, git, freshrss, bitwarden, outline, login (SSO), wireguard, + more — full table in ks4/install.md.
• ⚠️ The ZFS data pool is single-disk (not mirrored); durability rests on nightly cron jobs — 01:00 incus copy --refresh of all instances to the local backup pool on sdb5, then the instance leg to S3; 05:00 restic (DB dumps + data trees) to S3; nuc pulls the replicas over WireGuard. Full picture and restore procedures: backup-strategy.md (ks4/local-backup-cron.md, ks4/incus-copy.md, ks4/restic-backup.md).

Network flows

  nuc — home LAN 192.168.0.0/24                    ks4 — OVH 193.70.35.17
+-----------------------------------+       +-------------------------------------+
|                                   |       |                                     |
| host: wg-ks4 (10.8.0.20)          |       |  [wireguard] 192.168.1.18           |
|   incus remote "ks4"        ------+--WG-->|   wg0 10.8.0.1/24, udp 51845        |
|   pull ks4:* -> pool ks4backup    | udp   |    | masquerade -> eth0             |
|   on usb4t  [pending FTTH seed]   | 51845 |    |                                |
|                                   |       |    +-> incus API 192.168.1.1:8443   |
| [transmission-bt] wg0 (10.8.0.21) |       |    |   (ufw: only from .18)         |
|   full tunnel 0.0.0.0/0     ------+--WG-->|    |                                |
|   kill switch: no default route   | udp   |    +-> WAN egress: torrents +       |
|   downloads -> /srv/media         | 51845 |        apt of transmission-bt       |
|   (usb4t/media, read by jellyfin) |       |        exit as 193.70.35.17         |
|                                   |       |                                     |
| 03:00 instance snapshots          |       | 03:00 instance snapshots            |
| 03:30 incus-copy: all instances   |       | 01:00 incus-copy: all instances     |
|   -> project backup, pool         |       |   -> project backup, zpool sdb5     |
|   nucbackup (usb4t/backup/nuc)    |       |   then restic instance leg -> S3    |
| 05:00 pull ks4:* -> ks4backup     |       | 05:00 restic: DB dumps + data       |
|   [pending FTTH]                  |       |   trees -> S3 (restic-data)         |
| 05:30 apt upgrade all containers  |       | Sun 14:00 restic maintenance        |
+-----------------------------------+       +-------------------------------------+
   phones/laptops: WG peers 10.8.0.2-3 reach 192.168.1.x through the same endpoint

Both tunnels initiate from nuc (home NAT, dynamic IP) toward ks4's fixed endpoint; ks4's incus API is never exposed to the internet.

Conventions

• One markdown file per topic in the correct subdir, containing the full implementation notes, configuration, and troubleshooting notes.
• Containers are built from Debian/Ubuntu images and configured exclusively through incus exec/incus config so the doc is the single source of truth — rebuilding = re-running the script.
• Adding a service to ks4: follow new-container.md (no Docker in containers — incus runs OCI images natively and incus-compose handles stacks; data paths go into scripts/restic-paths).