dev
98162ea989
fergal is an 8-port SFP+ switch on a Realtek RTL9303, running OpenWrt rather than RouterOS or UniFi. It is not part of the fabric yet, but its firmware is now built here via astro's nix-openwrt-imagebuilder. Packages are baked into the image: OpenWrt's package server keeps only the current build of each feed, so installing at runtime stops working as soon as the feed moves past the running firmware. Those feed indexes rotate constantly, and upstream pins only the indexes -- a mismatch drops evaluation into import-from-derivation, putting this flake's eval on the network. The openwrt-feeds input pins expanded per-package hashes instead, in a repository of its own because they run to hundreds of thousands of generated lines. Flashing gets a procedure doc and a thin skill pointing at it, the same split as the box installation and nixpkgs upgrade procedures. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Home site
The home network (domain h.nul.ie): a redundant pair of routers in front of a VM host, an
NVMe-oF storage target, an IoT container host, and a workstation. The two routers — river (a VM)
and stream (a physical box) — are built from one shared
routing-common definition as an active/backup VRRP
pair, and everything clients touch (gateway, DNS) is a floating VIP that follows the master.
- Source:
nixos/boxes/home/
Boxes
| Box | Role | Host |
|---|---|---|
palace |
VM host | physical |
river |
Primary router (VRRP pair with stream) |
VM on palace |
stream |
Secondary router (VRRP pair with river) |
physical |
cellar |
NVMe-oF / SPDK storage target | VM on palace |
sfh |
NixOS container host (containers on its page) | VM on palace |
castle |
Workstation / gaming desktop | physical |
Router VIPs
Clients use per-VLAN floating VIPs as their gateway and DNS server; keepalived moves them between
river and stream. The addresses, DHCP/RA behavior and failover mechanics are documented once in
Router VIPs and Router HA.
Networks
The site separates core management, high-MTU trusted traffic, general trusted traffic, untrusted
clients and the two WAN paths. VLAN IDs, prefixes, MTUs and router addressing live in the canonical
home section of networking.md.
Switch fabric
The boxes hang off three hand-configured switches — jim and dave (MikroTik, RouterOS) and
brian (Ubiquiti, UniFi) — which are not managed by this flake. The physical topology, VLAN
map, the Digiweb WAN path (trunked VLAN 10 + PVID 140 at the ONT edge), and the multi-ONT plan are
documented in switches.md.
Wireless APs
The Wi-Fi APs — vibe (MikroTik cAP ax) and wave (Cudy AX3000 on OpenWrt) — are dumb APs, also
not managed by this flake. The shared VLAN-trunk design, SSIDs, per-AP management addressing,
and the OpenWrt flash/config for wave are in aps.md.
5G WWAN
A Quectel RM500U-EA USB modem with a GoMo SIM is being evaluated as a replacement for stream's
Virgin Media WAN. It is bench-tested only and not yet referenced by the flake; the module settings
it needs, the APN gotcha and the CGNAT consequences are in wwan.md.